Steve Hajducek wrote:
>
> 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
> >
> >--
> >FAQ on WWW: http://www.contesting.com/FAQ/amps
> >Submissions: amps@contesting.com
> >Administrative requests: amps-REQUEST@contesting.com
> >Problems: owner-amps@contesting.com
>
> --
> FAQ on WWW: http://www.contesting.com/FAQ/amps
> Submissions: amps@contesting.com
> Administrative requests: amps-REQUEST@contesting.com
> Problems: owner-amps@contesting.com
Hi Steve,
Yup...those are the exact dimensions alright! It runs off 240 VAC single phase,
and
I installed a little power supply and relay driver circuity so that grounding a
wire
switches the amp into XMIT mode and also applies 28 VDC to the external antenna
relays.
I think the weight now may be a bit less than 600 poungs, though, since it no
longer
has the auto tuning module (has to be tuned manually) and I did remove the
driver RF
deck (which reduced the weight a little bit, anyway). But it still is a pretty
heavy duty brute! I sit mine here on a little plywood platform with casters on
it.
Please let me know if you run across any HFers in the Pacific Northwest who
might be
interested ;-) Won't run 14 kw on 160m, but then again, you CAN afford to pay
the
electric bill for the filaments on THIS amp ;-) Should be able to stick in a
pair
of 4CX1500's I suppose if you really wanted to melt coax. 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
--
FAQ on WWW: http://www.contesting.com/FAQ/amps
Submissions: amps@contesting.com
Administrative requests: amps-REQUEST@contesting.com
Problems: owner-amps@contesting.com
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