Hi Pat....my recommendation for that price range is to purchase a used 3-holer
Alpha
76. Make sure it gets full output without exceeding recommended grid current or
you
will have to replace the tubes pretty soon. What you should really do is spend
just
a little bit more and purchase a used Alpha 77 or 78. It is really hard to go
wrong
with an Alpha (if the tubes are good).
73 es cul de Mike/W6RW
Pat Rundall wrote:
> Ampophiles,
>
> After nearly a decade of inactivity, I've decided to leap back into
> ham radio with both feet. I'd like any and all input on choosing an
> amp and am hoping this group will give me their rarely humble opinions
> regarding some of my options. If your interested in the dirty details,
> the background is at the end. Sorry if this is a little on the long side.
> Any and all feedback is appreciated! Comments on vendors, new vs used,
> internet vs hamfests, manufactures, etc are all welcome but I'm mainly
> interested in "how much amp can I get for my $1000-$1400?"
>
> A few of my choices:
> 1) AL-572: To me, this looks like a lot bang for the buck. $1229 at
> TexasTowers
> QSK is optional - actually, I'm not exactly sure how badly I'd need QSK.
> Four 572Bs, a relatively recent design incorporating a number improvements
> over earlier amps. 1.3KW PEP
> 2) AL-80B: $1159 at TexasTowers; 1KW PEP, 800W CW
> 3) Used TenTec Centurion: 1.3KW PEP, 1KW CW, QSK, 2 3-500Zs
> 4) Used QRO HF-2000: 1200W CW or 1.5KW SSB
> 5) Used Alpha 99... might be kinda hard to find one in this price range.
> 6) Other... Tell me what I'm missing
>
> My requirements:
> * Price - I once heard that a rule of thumb was to spend about the same
> on the amp as you spend on the rig. When I first heard this I laughed
> thinking that it oversimplified the issue... but the more I think
> about it, the more reasonable it sounds for some strange reason.
> Anyway, I suppose I'm looking in the $1000 to $1400 range.
> * Good reliability/performance for the price point. I'm a little worried
> about what I've read for Amps like the AL-80 and AL-1500. Should I be?
> Anyway, I don't want to frequently retube, nor spend a small fortune
> when it is necessary to do so. Oh yeah, I'm not too keen on having a
> ton of TVI reports either.
> OPERATING REQUIREMENTS
> * Relatively easy to use - I don't want to go through 30+ steps every
> time I QSY 5kc. A no-tune, solid-state, computer controlled system
> like the ACOM would be ideal, it's just WAY out of my price range.
> I'd also like to invite guest op ham/relatives and friends over so,
> I'll either need smarter relatives and friends or fairly idiot-proof
> equipment. :)
> * Definately CW, some phone, eventually digital modes.
> * I'm going to try a contest or two without an amp, see what I think.
> Eventually though, I'll try contesting with it. Kinda hard to tell at
> this point.
> * Years ago I was sort of a "casual DXer", so I suppose I will be again.
> * It would sure be nice if I didn't have to drive it with 100W for >1KW.
>
> BACKGROUND
> ==========
> The XYL has been encouraging me to rekindle my interest in ham radio.
> On the other hand, she's an accountant, so one of her first questions
> was "how much is all of this going to cost?" With this in mind, I've
> done a lot of research, drove to a ham store to look at rigs, and even
> put together a spreadsheet with pricing info for the three phases.
>
> Phase I is the basics (rig, wire antenna, ...), Phase II is the amp,
> and Phase III is the tower/beam.
>
> Phase I:
> Icom IC-746 w/ FL100 500hz CW filter
> Carolina Windom 160 Special
> Computerized rig control.
>
> Phase II:
> A 1KW-1.5KW PA of some sort
> Tuner capable of handling the PA
>
> Phase III:
> Trylon T500-56 56' free standing tower
> Yaesu G-800SA rotor
> Force 12 C4SXL 40-10m w/WARC (via tuner) Yagi or a Tennadyne/M2 LPDA
>
> I'll probably work on setting up the shack itself (phase I) over the
> next week or so. I'll probably get the amp in the next few months and
> finally setup the tower next spring.
>
> I applogize if this sort of thing is taboo on this maillist, but I
> poked around the archives and found very little in the way of comparisons
> between this this class of amplifiers.
>
> Many thanks!
> Pat, N0HR
>
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