I also like the AL-1500, although the blower is a little
loud when set on HIGH.
The amp requires about 50W of drive for full output, so you
have plenty of headroom with a 100W output rig, especially
necessary when going through bandpass filters for so2r. Most
transceivers will generate less IMD when you reduce their
power output.
I also have an amp that uses 4cx800a tetrodes, but tuning is
a lot more touchy. Screen current is VERY sensitive to the
setting of the loading capacitor, making tuneup a very
different process from a triode amp.
Happy holidays!
Dave Hachadorian, K6LL
Yuma, AZ
----- Original Message -----
From: "Richard Detweiler" <rdetweil@hotmail.com>
To: <ve4xt@mts.net>; <cq-contest@contesting.com>
Sent: Friday, December 19, 2008 3:25 PM
Subject: Re: [CQ-Contest] contesting amps
>
> I use, AL1500s
>
> All of them 100%. Has more power than legally possible,
> it just yawns at the RTTY contests.
>
> Tube is so over rated it will last a life time,
>
> Only drawback is the manual tune, it is not for the
> novice user, must know how to tune to keep the grid's low
> and antenna SWR's down.Best WishesRichard K5SF> From:
> ve4xt@mts.net> To: cq-contest@contesting.com> Date: Thu,
> 18 Dec 2008 21:45:59 -0600> Subject: [CQ-Contest]
> contesting amps> > Hi all,> > Considering an amp to
> replace my homebrew 4-400s.> > I'd like something durable,
> not necessarily a California kilowatt and > self-contained
> (no external HV PS). The more portable, the better.> > I
> get the sense that the Ameritrons are more suited to the
> casual, crank it > up for that rare one, DXer, but have
> doubts about their hardiness for 48 > hours of use.> > I
> like the ACOMs, but don't (and won't) have the coin for a
> 2000A (though I > certainly did like how that amp played
> at 6Y1V). The 1010 and 1000a are both > appealing.> > WWYD
> (What would you do)? Something used? Something new?> > Am
> going to be turning my TS-850SAT into part of this amp, so
> I won't be > making any decis
> ions at all at least until the KW is sold.> > All opinions
> welcome.> > 73, kelly> ve4xt > >
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