Hi Lance,
I have a Collins 204F-1(AM-2374/URT), wonderful beast, just for the benefit of
anyone interested in the $2,000 offer, jump at it in my opinion. If the 204H is
in the same box it is 70 in h x 20 in w x 22 1/4 in d. 220-440 vac, 60 Hz
single
phase and weighs in at just under 600 pounds, the schematic is at my web site.
I wish I had room for a 2nd one.
/s/ Steve, N2CKH
http://www.qsl.net/n2ckh
At 02:47 PM 8/17/01 -0600, you wrote:
>Hello Amplifier gurus! I am interested in selling my HF amp to help
>contribute toward the costs of my 6m EME antenna project. I don't use HF
>anymore,
>so I really can't seem to justify hanging onto it. It is big, and would
>have to be
>picked up by somebody in the Pacific Northwest. It is approximately 22"W
>x 22"D x
>5.5' high and weighs a few hundred pounds. It does no longer have the
>auto tuning
>circuitry in it. It does not currently work, but I am fairly confident it
>only
>requires a simple repair to restore either the bias or screen voltage. A
>loose
>screw fell down into the circuitry years ago and I haven't had the time,
>interest or
>need to repair it. I have a couple of manuals for it that come pretty
>close to
>matching this unit's circuitry (although the part humbers referenced seem
>to be
>different).
>
>Just prior to its failure, I removed the driver stages from it and
>installed a 50
>ohm load across the grids, so it could be driven directly with a 100w
>transceiver
>without all the various attenuation pads that were previously
>required. It worked
>GREAT in this mode (until the missed loose part fell into the works -
>HI!). (B+
>supply is still all OK).
>
>Needless to say, the amp runs plenty of power! It was manufactured by
>"Republic
>Electronic Industries", obviously subcontracting under Collins. It has an HN
>connector for output, and a built-in wattmeter. Of course, I have never
>actually
>put such a signal out on the air (!), but I have seen it very easily go up
>to 4 kw
>PEP output. It has no loading control, so requires either a really huge
>antenna
>tuner or needs to be run into resonant antennas (which is what I did here,
>on 75m,
>40m, and 20m). It runs anywhere between 2 and 30 MHz. I think with the
>addition of
>another mylar capacitor in the lowest bandswitch position, you could get
>it to go
>down to 160 meters, which is where I really wanted to use it if I keep it.
>
>I also have a couple of spare 4CX1000A's I will include along with the
>amp, since I
>don't need them for anything else. I am asking $2000 for the amp
>AS-IS. If I have
>time to get it throwing flames again, it should be worth much more than
>that. I
>would appreciate hearing from anyone in the Pacific Northwest seriously
>interested.
>MNI TNX and VY 73, Lance
>
>--
>Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8)
>P.O. Box 73
>Frenchtown, MT 59834 USA
>QTH: DN27UB
>TEL: (406) 626-5728 FAX:(406) 728-6320
>URL: http://www.bigskyspaces.com/w7gj
>
>--
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