Description:
Vacuum tube-based amateur radio equipment.
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Bruel & Kjaer VHF Converter Type 2400: anyone know about it
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I've come into possession of a Bruel & Kjaer Type 2400 VHF converter; it appears to have an input connector that takes a car radio plug, an SO-239 output connector, and cover 10 MHz to somewhere about 300 MHz. Nice planetary drive, with two concentric knobs, for tuning; other controls for band switching, oscillator level, and meter type (Off, 2300, 2400),... more »
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FS Drake MN-2700 Antenna Tuner
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FS: Drake MN-2700 Antenna Tuner capable of handling 2000 watts PEP. It covers all ham bands from 160 to 10 meters, including the WARC bands. It has a very accurate built-in SWR and Power Meter. It works great. This is an early production unit and has the gummy paint on the cabinet. The cabinet is... more »
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FS Drake UV-3 VHF/UHF Transceiver
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FS: Drake UV-3 144, 220, & 440 MHz VHF/UHF radio. This is a very nice Drake UV-3 transceiver. It has all three modules for 144, 220, and 440 MHz. The radio is in near new condition cosmetically. It receives on all 3 bands but it does not transmit. I am not a technician so can't trouble shoot it.... more »
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FS Heathkit SB-221 Modified to 6 Meters
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FS:Heathkit SB-221 KW amp professionally modified for 6 Meters. This is the full modification including removing the bandswitch and the standard RF components and rebuilding with components designed for 6 meter. It has graphite 3-500Z tubes, new rectifier board, new multimeter, and new High Speed Fan. This one is in exceptional nice cosmetic condition and it works... more »
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FS Rare Drake 6 and 2 meter station
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FS: Very rare R.L. Drake TR-6 6 meter transceiver with NB-9 Noise Blanker and MS-4 speaker and AC-4 power supply. Also included is the rare Drake CC-1, SC-2, CPS-1, and the TC-2 2 meter transmitter with a set of spare tubes. The station works great. All of this equipment was completely gone through, aligned, and checked out in November 2003 by Jeff Covelli (WA8SAJ)... more »
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FS As New Alpha 78 Amplifier
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FS: Rarely used three hole ETO Alpha 78 HF Amplifier. Has broadband mode for fast frequency changing without tuning. One of the later Alpha 78s with the good paint. Excellent condition, no damage, no dings, no scratches. This amp has been gone over by an local Alpha Amp technician. Actually I purchased it... more »
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Old Schematics.
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I have a RME DB-20 RF pre-amp that needs a schematic for me to check against. This unit was made around 1938 and uses steel tubes. They were very popular during the war because they isolated the oscillators from putting anything back into the antenna for the enemy to zero in on. Mine is just for short wave listening and I have no continuity on the... more »
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Refurbishing my Galazy GT550
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I acquired a GT550 along with its matching power supply about 10 years ago from someone's garage. I've had the thing packed up for about the same amount of time. I have the manual and tons of schematics along with several hand drawn schematics from the previous owner(s) with various notes and dates. I pulled it out over field day and turned it... more »
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SCR522
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Anyone got a modulation transformer from one of these? Neeed it for a top band AM TX. Also a TT11 valve.
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