Amplifier is working and sound very good. filters HF-1000LP. Add To Cart. Check Google, check the ARRL Handbook, CB websites and pirate radio. 95 Special Order : AL80BQ : AMERITRON AL80BQ: HF AMP, 1kW 3-500Z with QSK-5PC INSTALLED 110Vac $1,893. • Amateur, commercial, broadcast, military, scientific, & industrial purposes. 5 kW, manual-tune, 100% duty-cycle, linear HF amplifier. Power connector (5 pin special DIN) for LANDWEHR mast mounted preamps and Microwave Modules MMT series transverters. The ACOM 1000 gives you a comfortable 1000 Watts output on all amateur bands from 160 through 6 meters. Description: The HL-1Kfx was one of first THP Solid State HF amplifier. The ACOM 1000 HF Linear Amplifier is the world's best value in an amateur HF amplifier. RF amplifiers are part of more than 40,000 RF and microwave products that are in-stock and ship same day. ACOM 700S | Solid state HF + 6m Linear Amplifier. 5 KW Watt Strong Man Amplifier Also Dummy Load Destroyer by Bob Hutchinson, N5CNN. Vacuum Tube Amplifiers by W8JI. Business Hours: 9am to 5pm est, Monday through Friday; closed weekends and holidays. Eico Stereo Tube Amplifier HF-87 [Expired] The classic Eico HF-87 is a very musical tube stereo amplifier. Luckily, I brought most parts for the amp with me from America when I immigrated as it seems that some. Note: the kit includes a small ontainer of heat sink grease. The QQE06/40 delivers more than 150W PEP in the HF range, too. It covers 160 through 10 Meters. Since 1988 we have been manufacturing amateur radio antennas, preamplifiers and band-pass filters all of which have unparalleled performance and an excellent reputation for strength, reliability and longevity. Variable Frequency Oscillator V F O 24012K 47K +8V 2N2222 2N918 820 1. The 6x2 superheterodyne receiver is a 6 tube, 2 band receiver for 80m and 40m with a special position for receiving WWV at 5 MHz. ACOM 03AT Automatic Antenna Tuner. This is a video of a Continental 418E HF transmitter. The AL-811HD is a grounded grid linear amplifier developed by Ameritron using low cost 572B power triodes. Vintage 1950s Pye High-Fidelity HF 5/8 Valve / Tube Amplifier / Amp - READ. This video contains photos soviet tube and linear power amplifiers HF in performance amateur radio. Fender Blues Junior IV FSR 1x12" 15-watt Tube Combo Amp - Western Tolex Sweetwater Exclusive. arrl hb 95. Here we are utilizing one single FU-728F tetrode. KP990 100W Short wave HF power amplifier for KN 850 KN 990 Shortwave transceiver FT 817 FT 818 KX3 QRP Order/Check Details : https://zhenax. Since tube amplifiers require heavy duty power transformers and output transformers, this was the area where Sansui's strength did really shined. The high-frequency usefulness of the 833A in the amplifier shown limits the usage to those three bands. This is in unrestored, unmolested, near pristine condition. Solid State 1kW+ output amplifiers share the same deisgn format of the rest of the GEMINI. or Best Offer. DIY Push-Pull (PP) 6V6 Tube Amplifier Schematic This 6V6 amp was built following the push-pull (PP) EL84 / 6V6 Dynaco A-410 output transformer schematic. And he owned a short wave amplifier where one tube made 2kW of HF power. Amplifiers with variable capacitor at PI network output (olds "6LV's") are more easyly modified than models with 8 position swich for fixed values capacitors (new "6M1"). Full QSK-ready. This item is currently out of stock. 3CX15000A7 HF LINEAR AMPLIFIER - 3 X QB4 HF PROLINEAR AMPLIFIER 8XQB4 HF LINEAR AMPLIFIER - 6XQB4 HF LINEAR AMPLIFIER 2X 4CX250 VHF LINEAR AMPLIFIER - 4CX350 VHF LINEAR AMPLIFIER: VHF-UHF-SHF Projects,PA3EXV Nice descriptions of Transverters, Amplifiers and Preamps for VHF-SHF. The plate high-voltage transformer of the Tsunami power amplifier is designed for 10 KVA, because for a SSB output power of 15 Kilowatts with an amplifier efficiency of 65 percent and an average voice power of excessive 33 percent (with dreadful contest modulation), the required transformer power amounts to 7. RM Italy LA 250V Plus VHF 2 meter Linear Amplifier with Fans. 60 Watt drives. Only 1 left!. PL519 FRINEAR 150, 150 W HF Amplifier (Passive grid amplifier, FRINEAR LINEAR in RSGB's RadCom June 1989)Pi-in 5W, Po-out 80-100W. Chassis only or for «building in». The Eico model ST-70 is a complete high fidelity stereophonic control centre and a pair of 35 watts amplifiers, all in one chassis. • Miscellaneous amplifier parts, electronics. Full QSK-ready. broadband hf amp, using ifr510's, 1w in 40w out (two board set) $19. After a bit of research and info from a customer, we installed 1x 5U4GB, 2x 12AX7 and 2x 6L6GC's. HF Tube Amplifiers. Luckily, I brought most parts for the amp with me from America when I immigrated as it seems that some. It uses a GM3SEK Triode Control board. Arcing in amplifiers. It operates in class AB2 for SSB and CW. EICO HF-60 is one of the best sounding EICO Tube amplifiers and may be one of the best PP amps of all times in its power range. This is an older tube amp but it has the updated power supply board, replacement muffin cooling fan, as well as the modification to use dry contact keying. Audio Asylum - Amp/Preamp Asylum: REVIEW: JWN Amplifiers EICO HF20 Amplifier (Tube) by nurxhunter - Looking for a new Amp or Preamp? If you're after tubes, post over here. Looking to buy Eico Stereo and Mono Audio Gear power amps, pre-amps and integrated amps. Solid State 1kW+ output amplifiers share the same deisgn format of the rest of the GEMINI. My other amplifiers can make 600-watts, 600-watts, and 850-watts output. Linear amplifiers are most often used in amateur radio, laboratory equipment, and audio equipment. A good pair of matched 3-500Z tubes with HV around 3600-3800 plate volts and 220-240 Ma grid current, you should get about. It is directly from the "Good Old Times". As such, with an appropriate output transformer it could be used to drive speakers - rivaling classic SE amps with 2A3 output tubes, usually specified as 3. Re: [Amps] Dual 8877 HF amplifier RF design. AMPEREX TUBE TYPE HF R. EICO HF-60 is one of the best sounding EICO Tube amplifiers and may be one of the best PP amps of all times in its power range. Full QSK-ready. arrl hb 95 chp 17. I t is been repaired and modified by a technical d utch company. See full list on electronicprojectsforfun. Today, the typical transceiver output is 100W to 200W. on 75 meters you needed a 1500 pf. To its right is the white tank coil with the gray variable capacitors in the bakground. Amplifier Transformers: Magnetic Components, Inc. SPECIFICATIONS COMMANDER HF-2500/ HF-2500 MAGNUM LINEAR AMPLIFIER Band Coverage: 160, 80, 40, 20, 17, and 15 meter amateur radio bands, 12 and 10 meter Export model; also useable in U. Four 813 G2DAF RF Amplifier. • With the amplifier turned off (power: OFF), and using minimum exciter power (10 W should suffice) check that the antenna VSWR is under 1. Our HF TX system philosofy has been, since many years, to have available an amplifier which needs a drive level (ONLY when necessary) around 50 to 65 watts MAXIMUM as RF input level (to get the maximum power available, and legally permitted, from a linear amplifier accessory), o r LOWER, for even better IMD, lower harmonics levels, and for longer equipment life and enjoiable use of the. [ Simple Protection Circuits for PA Station] TECH SITES: Links to sites which present information or sources for anything which might be useful in building high power amplifiers using Russian tubes. Looking to buy Eico Stereo and Mono Audio Gear power amps, pre-amps and integrated amps. This amplifier achieves excellent linearity by the voltage stabilization of the control grid bias and the screen voltage. They had lived a long life and were going out of balance. 90 Buy It Now. NXP Homebrew RF Design Challenge entry. The A600 is a 600W HF/VHF linear amplifier using rugged MRF300 LDMOS transistors. Amplifier (4) HF Amplifier (1) VHF or UHF Amplifier (2) Dual Band Amplifier (1) Two Way Radio Earpiece (11) Audio Tube Kits (3) Ear Buds Earphone (2) Ear Hook Earphone (1) Only Listen Earphone (4) Throat Control Kits (1) Motorcycle Helmet Kits (0) Bone Conducts Kits (0) Wireless Item (0) Headset Item (0) Earphone Adapter (0) Earphone. Fleming’s discovery was the first step to the amplifier tube that in the early part of the 20th century revolutionized radio communication. 47u 100K 1K 220K 100K 0. TOF Amplifier Tuning Aid. RARE Eico Model HF-85 Tube Stereo Pre-Amplifier. Description: The HL-1Kfx was one of first THP Solid State HF amplifier. Eico power amps in the HF- series were well designed and very successful as kits. Therefore, the output tubes were determined to be EL-34. Its design is based on the venerable 6BQ5/EL84 output tube, made famous by the British invasion and folks like George Harrison, who plugged his Gretsch Country Gentleman guitar into a Vox AC-30 amp using four EL84s. The tubes should seat without too much pressure. RM Italy HLA 300V Plus HF Professional Linear Amplifier With Fans (1. The right high-power HF amplifier or solid-state amplifier for your station can deliver the DX punch you need to get heard loud and clear when faced with pile-ups and QRM. It is built to last and provide many years of reliable service. PA150 HF LINEAR 200W Amplifier. There is also a way to work around issues, any distance will work as long as the cathode "sees" a relatively low impedance at harmonics. The PCB is only about 2" x 4" inches - my kit had all the SMD components. To produce this power the Magma relies on three different tubes: the 6N1P-EV, the 6N30P-DR, and the Eimac 450TH. Integrated Stereo Tube Amplifier. The Eico model ST-70 is a complete high fidelity stereophonic control centre and a pair of 35 watts amplifiers, all in one chassis. The GS31b Amplifier was the second project. One of the tubes reached its demise quite abruptly. 5076 (54VA) Smaller transformers are supplied with one metal washer and two rubber pads, for power ratings up to 800VA. • Amateur, commercial, broadcast, military, scientific, & industrial purposes. Previous failures included the destruction of the HT glitch resistors and a constant stream of cathode bias transistors going S/C. 6 KVA (15 KW / 0. It's huge all copper heat-sink and use of ARF-1500 Mosfets coupled to a fully built in linear power supply made it an extremely popular amplifier with top DXers. 8 till 29 MHz (including WARC) and all modes. This revolutionary new amplifier delivers maximum legal power in all modes and operates on all HF amateur bands. Buying Request Hub makes it simple, with just a few steps: post a Buying Request and when it's approved, suppliers on our site can quote. Millinium HF Linear Amplifier. The distance traveled with radio equipment makes the HF amplifier suitable for aviation needs and live radio broadcasts. Full QSK-ready. This is a once very popular, dependable EICO HF-61 Pre-Amp Amplifier AF Audio Filter in good, complete (all components in place), working condition. Ending Jun 16 at 6:10PM PDT. Power Amplifier and Oscillator Class B Audio Amplifier or Modulator The HF-200 is another of the highly proficient high frequency generators of original Amperex design and development. Approximately AU $463. Drop tuning, 6,7,8+ stringed instruments will translate with pristine clarity. HF LINEAR AMPLIFIERS 1a) linear Amplifier 3CX15000A7 max. This is a single-stage preamp, Class A tube amplifier. AMPLIFIER FOR USE WITH QRP TRANSCEIVERS. Integrated Stereo Tube Amplifier. Item information. The HF-81 Integrated Amplifier will be packaged with the utmost care. 8MHz to 29MHz amateur (including WARC) and all operating modes. Fender Blues Junior IV FSR 1x12" 15-watt Tube Combo Amp - Western Tolex Sweetwater Exclusive. The critical thing is the trimpot bias should be adjusted to get an IDQ at 1. Following this tradition American Tube Amp periodically manufactures by hand custom tube amplifiers and amp sets inspired by certain legendary tube amp models of the past. 2x GI- 7B PA. image 1 of 13. To produce this power the Magma relies on three different tubes: the 6N1P-EV, the 6N30P-DR, and the Eimac 450TH. Lower cost in replacing finals compared to replacing tubes in tube-type amplifiers. Texas Star MC 250 with cooling fan $275. This unit has been used as a cb base station amplifier with awesome results. amplifier before One thing I have to say about the 4CX250B tubes is that I think I'm getting. The Alpha 8410 is a twin-tetrode, 1. Another home-brew HF amp project, a single EIMAC 8877 in a re-worked Harris chassis. See the optional Remote Contr. During a visit to an HAM exchange exhibition (Radiantistica Expo) I came up with the idea of building an amplifier using the mythical Russian tube Gi7b. NXP Homebrew RF Design Challenge entry. Buying Request Hub makes it simple, with just a few steps: post a Buying Request and when it’s approved, suppliers on our site can quote. 4CX250B Grounded Grid HF Amplifier. OM Power OM-2501HF - Heavy Duty Legal Limit HF Manual Tune Amplifier. Get it as soon as Tomorrow, Apr 16. Xiegu XPA125B 100W HF Power Amplifier + Auto tuner ATU For X5105 X108G G1M G90. For sale is an Eico HF-89 50WPC stereo tube power amp that received a full restoration including decking it out with some of the best vintage tubes available! These are known to compete favorably with the venerable Marantz 8B tube amplifier without the incredible price tag. There is a lot on every block of the circuit on the internet, so I`m gonna be going into little detail about this. SKU RFI-LA-DR. 8-54 MHz) with BLF188XR & Copper Plate. Condition:. GS35b HF Linear Amplifier. ANY HAM RADIO HF AMP PROJECT (USING 811A or 572B TUBES) $0 (SF BAY AREA OR ANYWHERE CLOSE) pic hide this posting restore restore this posting. Having been successful with my 813 amplifier I have now decided to take things up a gear and build something even more powerful. 8 till 29 MHz (including WARC) and all modes. There are 1,947 hf amplifier suppliers, mainly located in Asia. Model 8LM Mono Integrated Tube Amplifier. Here are some of examples. The AL-1500 also features time delay starting to protect the 3CX1500/887. At the time it was the lightest 500W – 160m-10m HF amplifier on the market with a total weight of only 30. Philips HF 306 (220 Volt) Tube Amplifier pair in good working condition + Pre Amp. There has been many 813 amplifier articles written over the years in a half a dozen radio magazines and this one is not much different except for some outback engineering and humor in building it. Save 12% with coupon. This should be used on Q2 and IC1 (the TO220 parts) to provide better cooling. W-50; Philbrick. Homemade HF amplifier from officina IU2CKS. Choose from power amplifiers, limiting amplifiers, low noise amplifiers, broadband amplifiers, gain block amplifiers and many more. The HF-81 Integrated Amplifier will be packaged with the utmost care. This amplifier (and tuner Eico HFT-90) was, I believe, installed on a home made cabinet which is why they don't have there original metal cabinet. RM Italy LA 250V Plus VHF 2 meter Linear Amplifier with Fans. This amplifier is capable of running one kilowatt of dc input on the 160-, 80- and 40-meter amateur bands. A vintage 1950s British Pye 'High-Fidelity' monoblock valve amplifier. • HF, VHF, & UHF. Pictured is my home brew amplifier that uses a single 3CX1000A7 tube class AB2, grounded grid. Orlando, FL 32806 | Local #: (407) 481-9994 - Toll Free#: (877) 307-1414. this amp is free classifed ads used surplus electronics. HF2013DX-A is automatically tuned to the frequency of operation of your TRX when connected properly with the right. It has a. Amplifier Transformers: Magnetic Components, Inc. The 807 was the most-used amplifier tube in history. with Easy Pay i. Condition:. For instance, a pair of legal-limit FETs cost about $800 from Motorola®. Will deliver over 800 watts output on most ham bands. Simple Operation and Hookup. This is an older tube amp but it has the updated power supply board, replacement muffin cooling fan, as well as the modification to use dry contact keying. covers 3mhz to 30 mhz. 45W MX-P50A HF Power Amplifier For FT-817 ICOM IC-703 Elecraft KX3 QRP Ham Radio. This item is currently out of stock. At left, inside this QRO HF-2500DX amplifier we recognize in the middle near the Svetlana 4CX800A/GU74B metal/ceramic tubes, the orange plate choke on which are grounded blue parasitic suppressors. One of the tubes reached its demise quite abruptly. Originally designed as power triode for UHF Radar applications it has a plate dissipation of about 1500W. Subject: Cancel. 2A3 - directly heated power triode. for easy handling. This amplifier is capable of running one kilowatt of dc input on the 160-, 80- and 40-meter amateur bands. 8 Lbs! This amplifier was designed for the traveling operator such as, DXpeditions. I just want to be full solid state. The first Sansui amplifiers introduced include the HPR-100(120), the HPR-150(200), the HF-2A3S, the HF-A3K, the HF-6V6P, and the HF-V6K in 1954. Home ALL AL-80B, HF AMP, 1kW, (1) 3-500Z TUBES, DOMESTIC 120VAC. This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. But, 1500-watts is plenty and I do not plan on ever running more output. The AL-811H is a grounded grid linear amplifier developed by Ameritron using low cost 811A power triodes. Export Model. The GS31b Amplifier was the second project. Tutorials and other information on designing and building hf amplifiers. • Class AB operation (180° < conduction angle < 360°). It will be capable of making over 1500-watts. Solid State 1kW+ output amplifiers share the same deisgn format of the rest of the GEMINI. Has the 10meter modification. Also PA3BIY Preamp rebuilds for sale. Make a 100 Watt linear amplifier from a kit. 1kW HF AMP w/3-500ZG TUBE, 110Vac US. Get it as soon as Tomorrow, Apr 16. • HF, VHF, & UHF. 95 Out of Stock : No Image Available: AL80BNT : AMERITRON AL80BNT: 1kW HF AMPLIFIER without 3-500ZG TUBE, 110Vac US $1,471. US Navy Shore Station HF Transmitters - 1950's & 1960's My main interest is in HF communications in the 1950's and early 1960's but this is a work in progress Please send me e-mail with additions, corrections, links, photos, etc. Automatic antenna tuner built-in. A project such as this one can teach you a lot of about electricity and electronics. It is equipped with a one FU728F or GU84B ceramic tetrode. Sold in 1996 for $11,000 each. Condition: Used. The selected new tube dissipation is 2. Description: This amplifier was designed by WB2EBY. (Click on images to see full screen) Drake L-4B modified to a single 3CX1200A7, blower, and Peter Dahl tx. If you find it confusing and have suggestions to improve it, please email me at this address:. Our HF TX system philosofy has been, since many years, to have available an amplifier which needs a drive level (ONLY when necessary) around 50 to 65 watts MAXIMUM as RF input level (to get the maximum power available, and legally permitted, from a linear amplifier accessory), o r LOWER, for even better IMD, lower harmonics levels, and for longer equipment life and enjoiable use of the. The distance traveled with radio equipment makes the HF amplifier suitable for aviation needs and live radio broadcasts. RARE Eico Model HF-85 Tube Stereo Pre-Amplifier. REDUCED asking price is $400 plus shipping. RM Italy HLA 150V Plus Professional Linear Amplifier With Fans. EICO HF-60 is one of the best sounding EICO Tube amplifiers and may be one of the best PP amps of all times in its power range. Note: the kit includes a small ontainer of heat sink grease. Schematics here. HF-Amplifier with 4CX1000A build into the cabinet of the amplifier with a GS31b. SpecsThe MJ15023 and MJ15025 are power transistors designed for high power audio, disk head positioners and other linear applications. DESCRIPTION :: PAYMENT INFO :: SHIPPING INFO :: ADDITIONAL INFO DESCRIPTION FOR AUCTION : This is a vintage 1950's-1960's Regency model HF-150 Hi Fi tube amplifier. 1kW HF AMP w/3-500ZG TUBE, 110Vac US. So I repaced all of the pre-amp and amp tubes with JJ Tesla and the rectifier tubes with Electro -Harmonics. Yosef PINHASI. The tubes should seat without too much pressure. Please study this manual carefully before operating your amplifier for the first time. HF 813 Linear Amplifier I've always wanted to build a massive linear amplifier since I was at school. A vintage 1950s British Pye 'High-Fidelity' monoblock valve amplifier. Our 500-W output amplifier gives us a smidgen more than a one S-unit boost on the other end (see Figure 1). Upgraded H. Output power 500W. Dimensions, including amplifier, power supply, tuner and controller, are only 350(H) x 269(W) x 378(D)mm* And, because the controller is detachable, the IC-PW1 can be installed almost anywhere in your shack. favorite this post. 1-512MHz 1. DIY Push-Pull (PP) 6V6 Tube Amplifier Schematic This 6V6 amp was built following the push-pull (PP) EL84 / 6V6 Dynaco A-410 output transformer schematic. 12% coupon applied at checkout. If it is not, use an antenna. WA1FFL has a project to solve that problem. It will be capable of making over 1500-watts. HF2013DX-A is automatically tuned to the frequency of operation of your TRX when connected properly with the right. Asking $1175 (that includes free shipping to any US Postal Address) - Paypal only (friends/Family). My other amplifiers can make 600-watts, 600-watts, and 850-watts output. The amp uses two IRF510 MOSFETS. HF Amplifiers Archives - The DX Shop Limited. If you find it confusing and have suggestions to improve it, please email me at this address:. BOTH HAVE ORIGINAL TRANSFORMERS AND TUBES! EACH OF THEM HAS ONE 5Y3-GT,TWO 6SN7-GT AND TWO 6V6-GT MADE BY MATSUSHITA. Solid State 1kW+ output amplifiers share the same deisgn format of the rest of the GEMINI. An external amplifier with 10-watts input and 300-watts output has a gain of 14. R&L Electronics: Text Questions to 513-868-6399: 800-221-7735 Catalog » HF » ICPW1: My. Amplifiers with variable capacitor at PI network output (olds "6LV's") are more easyly modified than models with 8 position swich for fixed values capacitors (new "6M1"). 8 - 30mhz) Sorry just sold out, back in stock end of may A full range HF amplifier with automatic or man. I've used with with my Kenwood TS-590 without issue. The linear amplifier HF2013DX-A is designed for all shortwave bands from 1. Tosuny power amplifier,45w 40db ssb linear. It covers 160 through 10 Meters. If I want a different sound, I'll use them. The model EICO HF-81 integrated tube amplifier is just one of several highly regarded products manufactured by EICO during this period. arrl hb 95. Larger transformers are typically supplied with an epoxy potted center with a hole for mounting. Other Outstanding Features. The QQE06/40 delivers more than 150W PEP in the HF range, too. SCHEMATICS VARIUS SCHEMATICS DIAGRAM; VALVOLE TUBE DATA SHEET VALVOLE AMERICANE AND RUSSIAN TUBE DATA SHEET; 16 x MRF150 HF Solid State HF Amplifier with 16 MRF150 2. The linear amplifier HF2013DX-A is designed for all shortwave bands from 1. IFM Stereo Tube Tuner. Pair EICO HF-22 Tube MONO BLOCK Power Amplifiers with All Vintage Tubes. Also PA3BIY Preamp rebuilds for sale. 1-512MHz 1. Metal case. AL-811 HF 600W+ linear amplifier AL-811 A$2499 Plenty in stock! 160m to 10m band coverage, including WARC Bands; Upgraded re increased stability and reduced spurious output by Andrews Communications. Technical review : how to select an HF tubes amplifier ? T-network attenuator. Vacuum Tubes, Inc | 1080 Sligh Blvd. (As an aside, I wish I had gotten the AL80B). EL/PL 519 tubes are dedicated to TV purpose during the 70s , therefore this kind of tube are able to be used for HF. PowAbeam antennas 2-3 weeks from order. Eico power amps in the HF- series were well designed and very successful as kits. 525Willee N5WRX. US Navy Shore Station HF Transmitters - 1950's & 1960's My main interest is in HF communications in the 1950's and early 1960's but this is a work in progress Please send me e-mail with additions, corrections, links, photos, etc. HF amplifiers for ham radio use. Circa 1924 (33214323311). FS: MLA2500 HF Amp w/8875 $$$ drop Price is dropping … FS: Spare to my needs is this original MLA-2500 w/8875 tubes. The prefix "HPR" signified pre-amplifiers, and the prefix "HF" was for power amplifiers. In fact my old friend John Weston (G3LYW) gave me an 813 to use in an amp, I built up a power supply for it but never completed the linear so I'm going to have another shot at it!. It was manufactured during a time when mains voltages were lower -- typically 117 VAC -- and output tubes were relatively cheap and available. ISLAND AMPLIFIER USA offers 1) BEKO Elektronik Sales & Service for US, Canada and Central America, 2) RF-KIT Power Amplifier sales & service for US and Canada, 3) Professional HF amplifier repair service and 4) Restoration products to extend the life of legacy ALPHA ETO. broadband hf amp, using ifr510's, 1w in 40w out (two board set) $19. There is also a way to work around issues, any distance will work as long as the cathode "sees" a relatively low impedance at harmonics. 160 m to 10 m. Each tube has a. I t is been repaired and modified by a technical d utch company. ) Linear (975,720 bytes, PDF file). Sorry, we have detected unusual traffic from your network. 2W output power with an input of 2. 90 Buy It Now. Full QSK-ready. Variable Frequency Oscillator V F O 24012K 47K +8V 2N2222 2N918 820 1. [ AG6K/Excellent general data] 3. As such, with an appropriate output transformer it could be used to drive speakers - rivaling classic SE amps with 2A3 output tubes, usually specified as 3. 50-4000MHz RF Low Noise Amplifier SPF5189 0. Before looking the actual design of this amplifier let. 00 shipping. Power connector (5 pin special DIN) for LANDWEHR mast mounted preamps and Microwave Modules MMT series transverters. Serial number is over 300 so it has the updated factory modifications. The GS31b Amplifier was the second project. 1,630 hf amplifier design products are offered for sale by suppliers on Alibaba. Chokes are supplied for the RF In, RF Out, Relay Cable, and AC/DC power line. There are amplifier tubes that can be destroyed by 100W of drive. Well regulated screen and grid supply for +ve and -ve currents as well as current limiting to protect the tube and. Scientific Radio Systems SR-110 Kilowatt Amplifier's shown in stand-by and main mode, side by side. The simplicity of the build is the point i was focusing. so, total will take 10-17 days. 500 watts input all 9 hf bands self contained desktop unit. Linear Power Amplifier on G811. This revolutionary new amplifier delivers maximum legal power in all modes and operates on all HF amateur bands. Details about Philips HF 302 Tube Amplifier Röhrenverstärk er 800 Ohm. Plate voltage is about 950 volts (220 x3 x 1. – Gate bias set for minimum crossover distortion. OM Power OM-2501A - Heavy Duty Legal Limit HF Automatic Amplifier. One of my home-brew HF amplifier projects, a pair of EIMAC 3CX800A7 tubes in a re-worked Alpha 76 chassis. Looking to buy Eico Stereo and Mono Audio Gear power amps, pre-amps and integrated amps. Includes old replaced parts. The highest power that I can get is about 1400-watts. They can have either vacuum tubes or use solid state technology. It's really a cool-sounding amp. Tubes are less forgiving about mismatches, so to get the best out of a tube amp it must be used with just the right speaker. During a visit to an HAM exchange exhibition (Radiantistica Expo) I came up with the idea of building an amplifier using the mythical Russian tube Gi7b. AMPLIFIER HF2013DX-A - HF 2KW. 160 - 10 m. View and Download Tokyo Hy-Power HL-2K instruction manual online. 2,000 watt low pass R. Fully microprocessor controlled HF Linear Amplifier. Sixteen transistor mobile amplifier. no relais switching under power conditions, soft start inrush, 240 sec delay time for full power, turbine blower with 2 speeds. 4) initially I thought about using x4 but kept getting tube "flashovers" so had to install the switch (S5-1) to drop to x3. Full QSK-ready. The AL-811H is a grounded grid linear amplifier developed by Ameritron using low cost 811A power triodes. There are a few minor deviations from the original schematics. If I want a different sound, I'll use them. Tosuny Power Amplifier,45W 40db SSB Linear HF/FM/C. Tetrode/Pentode tubes amplifier with grid grounded a very easy to build and the bias is just a piece of cake to achieve. grids (807) and then run the tube in true grounded grid operation. But, 1500-watts is plenty and I do not plan on ever running more output. [ G/GM3SEK - PA Control Circuits] 4. Chokes are supplied for the RF In, RF Out, Relay Cable, and AC/DC power line. It is only 11″ wide, 4″ high, and 9″ deep. It is only 11" wide, 4" high, and 9" deep. Before the amplifier arrive Hong Kong, I can not upload the tracking number. Made in the USA (Brooklyn, NY) 1950s. The filament alone heats the entire bottom of this tube and even with the fan blowing air into the box, the bottom of the tube will get too hot to hold in your hand. L DRAKE L4B HF Amplifier For SaleDrake L4B with L4B power supply. Before the amplifier arrive Hong Kong, I can not upload the tracking number. 1300 watts HF amplifier, 4 572B tubes. In the last 5 years this amp has had so much hype that now the unrestored costs on Ebay have jumped to over $500. The A600 is a 600W HF/VHF linear amplifier using rugged MRF300 LDMOS transistors. Since tube amplifiers require heavy duty power transformers and output transformers, this was the area where Sansui's strength did really shined. 12% coupon applied at checkout. This is a video of a Continental 418E HF transmitter. Ameritron AL-811 series amplifiers! World's most popular valve/tube HF linear amplifiers. PowAbeam antennas 2-3 weeks from order. Watch carefully how you treat a solid-state amplifier. The item “Eico HF 81 integrated tube amplifier EL84 US restored, upgraded vintage, stereo” is in sale since Saturday, May 22, 2021. Chassis only or for «building in». $1,500 (yrk > Felton) pic hide this posting restore restore this posting. Condition: Used. Automatic antenna tuner built-in. As I remember from 1980 when we were building these, for a double hole 4-1000 to work. broadband hf amp, using ifr510's, 1w in 40w out (two board set) $19. 1 October 2005 NSARC HF Operators – HF Amplifiers 17 Switch to Safety!! Tube amplifiers contain lethal DC voltages > 2 kV. Here we are utilizing one single FU-728F tetrode. It has good bass response, and can be bridged for approx. The HF-81 has two push-pull Williamson amplifier circuits and a stereo control center on a single chassis. " Disconnect mains supply and allow all filter capacitors to discharge before opening amplifier case. RM Italy LA 250V Plus VHF 2 meter Linear Amplifier with Fans. HF amplifiers for ham radio use. I have other tube amps to choose from and my favorites are my Paramount 2A3 mono blocks and they are only 2-3 watts and sound like heaven. 95 Out of Stock : No Image Available: AL80BNT : AMERITRON AL80BNT: 1kW HF AMPLIFIER without 3-500ZG TUBE, 110Vac US $1,471. Eico HF-65 pre amp. In order to appreciate what more or less goes on in this amplifier, we need to take a look at how a few things work, and first up are the vacuum tubes themselves. Fast Warm Up Time: The 811A tubes take approximately 10 seconds to warm-up. EICO HF-60 is one of the best sounding EICO Tube amplifiers and may be one of the best PP amps of all times in its power range. Model 8LM Mono Integrated Tube Amplifier. This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. Amplifier Circuits. Media in category "Tube amplifiers" The following 174 files are in this category, out of 174 total. Arcing in amplifiers. DIY Push-Pull (PP) 6V6 Tube Amplifier Schematic This 6V6 amp was built following the push-pull (PP) EL84 / 6V6 Dynaco A-410 output transformer schematic. Their High Power Vacuum Tube Linear Amplifiers and Solid State "No Tune. Photos of the Design. ICOM ICPW1, ICPW-1, HF/6m 1kW LINEAR AMPLIFIER with PS & ATU. arrl hb 95 chp 17. Export Only. AL-80B, HF AMP, 1kW, (1) 3-500Z TUBES, DOMESTIC 120VAC Save Ameritrons legendary AL-80A kilowatt amplifier has been completely redesigned and extensively improved. Using [6] as a guideline, the. See the optional Remote Contr. Remember, the amp’s protection is the last line of defense before failure. I probably need to get a new set of tubes for it. Price: EUR 295. Simple Operation and Hookup. Features: Compact for a Tube Amplifier. Integrated Stereo Tube Amplifier. Also named PAD attenuator, this is a tuned network made of variable capacitors forming the arms of a " P" and two parallel inductors forming the top (also designed as a "T" network, hence its name). The bottom-line is that 1500W, HF, gridded electron tube amplifiers are more efficient, more forgiving, easier to cool, more compact, weigh less, are more tolerant of high SWR and are less costly than 1500W HF semiconductor amplifiers. The critical thing is the trimpot bias should be adjusted to get an IDQ at 1. I noticed their brightly lit, cathedral-like innards. It is only 11" wide, 4" high, and 9" deep. Ending Jun 16 at 6:10PM PDT. Item information. 5 KW Watt Strong Man Amplifier Also Dummy Load Destroyer by Bob Hutchinson, N5CNN. Never touch the amplifier chassis with one hand while probing with the other hand because a lethal shock can run between your arms through your heart. FU728F Tube2500 W output automatic tuning HF amplifier. Get it as soon as Tomorrow, Apr 16. 95 Special Order : AL80BQ : AMERITRON AL80BQ: HF AMP, 1kW 3-500Z with QSK-5PC INSTALLED 110Vac $1,893. In the old days with valve transceivers having their own PI tank tuning. 8 till 29 MHz (including WARC) and all modes. broadband hf amp, using ifr510's, 1w in 40w out (two board set) $19. TOF Amplifier Tuning Aid. Most likely on its way to Spain one of the tubes broke. Other Outstanding Features. Therefore, the output tubes were determined to be EL-34. Power connector for Landwehr receive preamps. net/400106194165. Year: Month: Tube Related Products: Other Products: Description: 1944: December: P-422H, etc : Power Transformers: 1947 : Transformers : More than 10 Tube Transformers. For those who like classic vintage tube mono, or looking for mate for another amp. Power Output: Minimum 1500 Watt at any mode no time limit with approx. As is obvious from these pages, I occasionally enjoy working on tube audio amps as well as more typical boatanchors. 00: ON May 23, 2021: 6 : FOR SALE: HH Scott Stereomaster 233 tube amplifier in great condition: Tube Amplifiers: $860. jpg (file redirect) File usage on other wikis The following other wikis use this file:. Power connector (5 pin special DIN) for LANDWEHR mast mounted preamps and Microwave Modules MMT series transverters. Luckily, I brought most parts for the amp with me from America when I immigrated as it seems that some. net The following describes a 160-10 meter linear amplifier that uses a pair of 3-500Z triode power tubes. AL-811HD HF Amplifier, 800W, 572B Tubes (x4), US 120VAC. A good example is the 3CX800A7. Power connector for Landwehr receive preamps. deep-cut capacity. Technical review : how to select an HF tubes amplifier ? T-network attenuator. Metal case. The plate-load True Resistance Indicator (TRI) is a powerful tuning aid which, together with the automatically controlled input attenuator, helps the. RM Italy LA 250V Plus VHF 2 meter Linear Amplifier with Fans. ON/OFF light works. You need to understand that when the surplus dries up, thats it. Previous failures included the destruction of the HT glitch resistors and a constant stream of cathode bias transistors going S/C. HF Vacuum-Tube-Amplifier Parasitic Oscillations February 22nd Fact-of-the-Day. 5kW 2) Linear Amplifier 8 X QB4 OR 4-400 TUBES 3) Linear Amplifier 2 X GU84B TUBES 4) Linear Amplifier 6 X QB4 OR 4-400 TUBES VHF 144-146 Mhz LINEAR AMPLIFIERS 1) 4CX-350 TUBE ,700W OUT 2) 2 X 4CX-250TUBE , 1KW OUTPUT PUSH PULL. Their High Power Vacuum Tube Linear Amplifiers and Solid State "No Tune. Price: $36. This is a common replacement part for many Henry amplifiers. Original tube GU-43b or Q-1P/42 dissipation is 1 kW. In the old days with valve transceivers having their own PI tank tuning. GS35b HF Linear Amplifier. HF Amplifier with GS31b. Ameritron HF Power Amplifiers are the most popular HF amplifiers in the world! Ameritron leads the industry with time-tested designs that offer the best value for Amateur Radio operators and HF experimenters everywhere. Vacuum tubes operate at high anode voltages and moderate anode currents; typically, a tube PA (power amplifier) stage requires an RF anode load resistance of approximately 2000Ω for optimum efficiency. An ECC83 tube inside a preamp. This revolutionary new amplifier delivers maximum legal power in all modes and operates on all HF amateur bands. 0: 4-400A (or C) 44: The G2DAF Linear Amplifier: All HF bands. The antenna and bias relay is enclosed in a small Bud Box seen on the left side of the amplifier. K2W Tube Op-Amp Page 1 Page 2. Super nice condition Ameritron AL-80 HF amplifier. For a few Dollars more - an extra Rusky tube, a really powerful Peter Dahl plate transformer and a foreign address, you can have a BIG signal from this beast. Get it as soon as Tue, Mar 9. Topics Last post. HF LINEAR AMPLIFIERS 1a) linear Amplifier 3CX15000A7 max. The PA150 is a 200 Watts SSB/CW rugged HF Linear amplifier units that will give many years of hard working service latest and smallest amplifier. Complete Elecraft Kx3 Px3 Kxpa 100 Watt Amplifier Ham Hf Station Accessories. Home ALL AL-80B, HF AMP, 1kW, (1) 3-500Z TUBES, DOMESTIC 120VAC. 99 (including postage). net/400106194165. Condition:. Power connector for Landwehr receive preamps. Tube Tester and Filament Burn In Jig-Here's my answer to cooking the tubes for days and then testing them before inserting them in an amp. Ham Repair Guy - For All Your Amp Building, Amp Repairing and Part Buying Needs. The output transformers are the reason behind the so called "magic" these amps produce. The amp now runs two 4CX1500B tetrodes in parallel in AB1 class (no grid current). Payment method: Cash, Paypal, Money Wire. Inner view. 24 watching. Apparently this is some kind of classic, or reference, project. The price will go through the roof, no one will rebuild them and you will be left with an amp that is about as useful as a 12 tube Phantom with 6lQ6's. Looking to buy Eico Stereo and Mono Audio Gear power amps, pre-amps and integrated amps. Integrated Stereo Tube Amplifier. Monthly Specials For June. ACOM 600S | Solid state HF + 6m Linear Amplifier. Pasternack RF amplifiers are used to convert a low power, low frequency signals into a larger frequency at higher power. 1– Schematic of Doug DeMaw, W1FB’s, solid-state VFO amplifier circuit, as published in the September 1991 issue of CQ. With over 30 years experience in building HF amplifiers our current amplifiers continue to demonstrate our commitment to supply top quality, hand built, rugged units that will give many years of hard working service. They each have seven con tacts which match the seven pins on the 4CX800A tetrodes. 03 shipping. Many hams like the challenging of hunting for parts to build a high quality amplifier out of inexpensive surplus parts. This allows the meter to jump into the circuitry of the power amp without the need to disconnect any wires or components. In the old vacuum tube days each homebuilt amplifier stage was designed to work on several bands. 2xGU50 and 3xGU50 PA from UA1TAT. I probably need to get a new set of tubes for it. favorite this post. Features:High Safe Operating AreaHigh DC Current GainComplementary to MJ15022 (NPN), MJ15024 (NPN)These Devices are Pb-Free and are RoHS CompliantView datasheet here. Price: EUR 295. Modes are CW, SSB, and AM, The receiver features a powerful 4 watt audio amplifier, crystal filter for single-signal reception, and 100 kHz crystal calibrator. The linear amplifier OM2501HF is a manual tune designed for all short wave amateur bands from 1. The remote head is $50, and the owner-installed 10/12 meter mod is $30. Eico HF81 Restoration/Repair. EL/PL 519 tubes are dedicated to TV purpose during the 70s , therefore this kind of tube are able to be used for HF. 50W HF 50 MHz PA, 50 watts 13. 3CX15000A7 HF LINEAR AMPLIFIER - 3 X QB4 HF PROLINEAR AMPLIFIER 8XQB4 HF LINEAR AMPLIFIER - 6XQB4 HF LINEAR AMPLIFIER 2X 4CX250 VHF LINEAR AMPLIFIER - 4CX350 VHF LINEAR AMPLIFIER: VHF-UHF-SHF Projects,PA3EXV Nice descriptions of Transverters, Amplifiers and Preamps for VHF-SHF. This amplifier achieves excellent linearity by the voltage stabilization of the control grid bias and the screen voltage. Ham Radio Amplifiers | Surplus Network. L DRAKE L4B HF Amplifier For SaleDrake L4B with L4B power supply. The price will go through the roof, no one will rebuild them and you will be left with an amp that is about as useful as a 12 tube Phantom with 6lQ6's. Will deliver over 800 watts output on most ham bands. Long Tube Life: The 572B tubes are long life, reliable transmitting tubes. This compact little amplifier is the brain-child of Pat Murdoch, ZL1AXB, in Auckland, New Zealand. Model 16LS Stereo Integrated Tube Amplifier. Eico ST-70 Stereo Integrated Tube Amplifier. They had lived a long life and were going out of balance. It uses a GM3SEK Triode Control board. In order to appreciate what more or less goes on in this amplifier, we need to take a look at how a few things work, and first up are the vacuum tubes themselves. However I have found even though JBL's can be highly efficient they like power too. The essence of HF provides long-distance control over your audio output through an amplifier. The model EICO HF-81 integrated tube amplifier is just one of several highly regarded products manufactured by EICO during this period. Keep in mind that the before 1982, the FCC regulated hams according to input power, so when hams talk about a 1kW amplifier, they are referring to 1kW input, not output. Many QRP rigs are capable of 5 or 10 watts of power, this is often enough for data mode DX, but sometimes you just need more punch to get heard on SSB. Here is the kit parts all laid out: As usual with Chinese kits no documentation is included, all parts were loose packed in a bubble wrap bag (no ESD protection for FETs) Two extra TO-220 insulation pads and washers were included. comes with manaul copy beter than new again non smoker user. The NAT Audio Magma is capable of blasting its raw power at 4 or 8 ohms with a frequency response of 10-10,000 Hz. Find the cheap 500w Hf Linear Amplifier, Find the best 500w Hf Linear Amplifier deals, Sourcing the right 500w Hf Linear Amplifier supplier can be time-consuming and difficult. Tosuny Power Amplifier,45W 40db SSB Linear HF/FM/C. 00: OSM-6915 (150) ABC Owners Manual/Schematic 4 tube base linear: $8. Condition: Used. And while not full legal limit, 1200 watts is less than 1-dB down from 1500 watts. Power Output: Minimum 1500 Watt at any mode no time limit with approx. FU728F Tube2500 W output automatic tuning HF amplifier. This model PA150 amplifier has outstanding performance in its class and represents truly exception value for money. HF Amplifiers. Lightweight design minimizes user fatigue. Price: EUR 295. 5kW HF Linear Amplifier with QSK-5 insta. 8 Lbs! This amplifier was designed for the traveling operator such as, DXpeditions, vacations, field day, camping, and for persons who simply want a light weight all in one amplifier. Long Tube Life: The 811A tubes are long life, reliable transmitting tubes. 4-KWatt; 4CX15000 HF Linear Amplifier HF Amplifier with 1 4cx15000 35-KWatt. Other Outstanding Features. Vintage Eico HF-60 Tube Monoblock Amplifier. Vacuum Tube Amplifiers by W8JI. Recently there was a. output 25 kw 1b) Preamplifier 3XQB4 , 3. Front panel is free of damages. RARE Eico Model HF-85 Tube Stereo Pre-Amplifier. The QQE06/40 delivers more than 150W PEP in the HF range, too. 10 Watt HF Amplifier Inventory and Parts List Note: Band kits are included in separate packages and are listed in the table on page 10. It was manufactured during a time when mains voltages were lower -- typically 117 VAC -- and output tubes were relatively cheap and available. It has some pen and pencil marks. ACOM 600S | Solid state HF + 6m Linear Amplifier. Tubes are less forgiving about mismatches, so to get the best out of a tube amp it must be used with just the right speaker. Save 12% with coupon. Texas Star MC 250 with cooling fan $275. ISLAND AMPLIFIER USA offers 1) BEKO Elektronik Sales & Service for US, Canada and Central America, 2) RF-KIT Power Amplifier sales & service for US and Canada, 3) Professional HF amplifier repair service and 4) Restoration products to extend the life of legacy ALPHA ETO. 5W output power. 50-4000MHz RF Low Noise Amplifier SPF5189 0. IFM Stereo Tube Tuner. For Eico HF-12 or HF-81 only. And while not full legal limit, 1200 watts is less than 1-dB down from 1500 watts. 71 shipping. The selected new tube dissipation is 2. Power Amplifier and Oscillator Class B Audio Amplifier or Modulator The HF-200 is another of the highly proficient high frequency generators of original Amperex design and development. Share this: Twitter; Facebook; Like this:. 1 Amplifier will be sealed inside of plastic to keep out packing materials and dust. The 4 power tubes are Amperex Bugle Boy EL84, may be original set. • The amplifier contains high voltage circuits. HAGERTY,* WA1FFL Fig. Tosuny Power Amplifier,45W 40db SSB Linear HF/FM/C. Both units have been cosmetically gone through faces hand polished back to their beautiful finish. Driving a 3CX800A7 with 100W PEP will eventually strip flakes off of the cathode. WILL CALL: Please call (760) 744-0700 in advance and place your order. • Miscellaneous amplifier parts, electronics. GS35b HF Linear Amplifier. It is equipped with a ceramic tetrode FU728F (4CX1500B). SOME PARTS WAS. This video contains photos soviet tube and linear power amplifiers HF in performance amateur radio. Fully microprocessor controlled HF Linear Amplifier.