[AMPS] Need info on an used ALPHA 374

[tkass]

Hans,

There were 2 versions of the Alpha 374 - the 374 and the 374A - the
original 374
uses 3 x 8874 (3CX400A7) and the "A" version only 2...PEP output was not
given
in the book but only input...the 374 runs 3K input.  The "A" version
added 160
mtrs - no WARC . the oringinal 374 was 80 - 10 mtr only..both versions
incorporated manual and automatic (bandpass) tuning for each band....not
sure
but I think the Hypersil transformer was an option on the 374A.....it is
standard on the original 374.

I have read and heard about the conversion to 2 x 3CX800A7 - the tubes
are a
direct fit..but you will need to put in a filament transformer for the
higher
(double) voltage...apparantly they will fit in sockets 1 and 3 on the
374 but
dont know about the "A" version...can't fit side by side due to the
larger
size..

Prices on the 8874 are high  around $300 or so...same on the 3CX800
...about the
same price, in fact I think Ive seen the same prices for both tubes on
the
russian site..that is why many hams are looking at the 3CX800 as a
replacement....gud luck... Tim  WB8OWX


sm5ki wrote:

> Hello all: I have been offered an ALPHA 374. I know it has been discussed on
> this net. Questions:
>
> WARC bands?
> Pep output SSB?
> Max out on cw?
> Spare tube cost at EIMAC / SVETLANA or anyone of you dear readers?
> Current used price?
> Whats inside?
> Negative/positive opinions?
> I know a 3CX800 is 2x a 8874 - can I  insert 2x3cx800 later and run it as 1
> 1/2 3CX800?
> Is there anough mechanical space for 2x3CX800?
>
> Waiting for your answers de Hans
>
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