I enjoy my QRO-2500DX.
Phillip KB4I
----- Original Message -----
From: "Michael Tope" <W4EF@dellroy.com>
To: "AMPS" <amps@contesting.com>; "Chuck Adkins - K8CPA" <k8cpa@arrl.net>
Sent: Wednesday, January 03, 2001 5:59 AM
Subject: Re: [AMPS] AL-1500, AL-82, AL-1200, QRO???
:
: Hi Chuck,
:
: The club at my workplace recently picked-up an AL-82. So far it
: seems like a very nice amplifier. It uses 2 x 3-500Z tubes which
: are considerably cheaper than the 3CX1200 and the 8877 tubes
: used in the AL-1200 and AL-1500. The 3-500Z's are instant
: on, so there is no waiting if you stumble across a pileup with
: your amplifier off. Unlike many other 3-500Z amps, the AL-82
: runs a fairly high plate voltage (3600VDC resting in the SSB
: position), so the amp is easily able to produce legal limit output
: with 100 watt rigs like the TS-850 we have at work.
:
: I have also used the AL-1200, and the engineering model
: of the AL-1500 (an old contesting buddy is a good friend of
: W8JI). Both amps worked very well (the AL-1500 engineering
: unit would run 2500 watts output key down, but I think it had
: a slightly larger than stock transformer in it). From my recollection,
: the AL-1200 performed similarly to the AL-82 (its been over 10
: years since I have used the AL-1200). The only caveats I can
: think of for the AL-1500 are the higher tube cost, sensitivity to
: excessive grid current (characteristic of the 8877 tube), and
: warm up time of the indirectly heated cathode. The AL-1200
: doesn't have the problem of grid current sensitivity, but it
: does use a pretty expensive tube. I don't recall if the 3CX1200
: tube used in this amp is instant on or not. I should also mention
: that the AL-1500 will require less drive power to reach legal
: limit (~65 watts versus ~100 watts) than the AL-1200 or AL-82.
:
: The other technophiles on the reflector may be able to fill you
: in on some of the finer points of these fine amps.
:
: 73 de Mike, W4EF..................................................
:
:
:
:
:
:
: ----- Original Message -----
: From: "Chuck Adkins - K8CPA" <k8cpa@arrl.net>
: To: <amps@contesting.com>
: Sent: Monday, January 01, 2001 6:41 AM
: Subject: [AMPS] AL-1500, AL-82, AL-1200, QRO???
:
:
: >
: > Which ones are better???
: >
: >
: > -Chuck K8CPA
: > http://www.qsl.net/k8cpa -- My WebPage
: > http://multi.mode.listbot.com -- Digital Amateur Comm.. Mailing list
: >
: >
: >
: >
: >
: >
: >
: >
: > --
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: > Problems: owner-amps@contesting.com
: >
: >
:
:
:
: --
: FAQ on WWW: http://www.contesting.com/FAQ/amps
: Submissions: amps@contesting.com
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: Problems: owner-amps@contesting.com
:
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