Needing real 1500 out and real continuous output at that power..........
1. I would check the OM Power model 4000 (several versions) and choose the TWO
PHASE AC input, yes 2 phase.
2. Ask about the Ameritron model 1500 with the 8873 tube, maybe ok but sure is
lots of amp for the money.
3. I would look for used....... a Henry 4K or Alpha 77SX or get on top end of
75m and ask the regular rag chew groups for names of fellows who build brutal
amplifiers for them and their buddies.
I owned the Alpha 9500 new and it blew up 4 times in regular use. Once was
blower hitting its housing, but other times were parts failing inside
amplifier, three different failures. Also it had its own mind about which
output socket to select automatically. My fluctuating AC may have been a
factor.... normal 230VAC would sag down to about 200 on voice peaks and snap
right back often. Sold it at a big loss.
Avoid the Alpha 87a for too many age-related problems (I owned, sold). Alpha
76pac, three tube, may do 1500 Continuous but maybe need more forced air? (I
owned, sadly sold).
Sum, get OM Power 4000 likely, but avoid Alpha 9500.
73, Charly
Space below for folks to fill in telling me how wrong I am:
________________________________
From: Amps <amps-bounces@contesting.com> on behalf of Bill Turner
<dezrat@outlook.com>
Sent: Thursday, September 8, 2016 9:45 PM
To: Amps group
Subject: Re: [Amps] Acom 2000A - typical output power?
Hi Dick: Thanks for the RTTY contest Q's over the years!
I owned a 2000A at one time not to mention many other amps over the
years. If you run it at 1500 watts RTTY contesting, it will over heat
after a while, about 10-15 minutes as I recall. You either let it cool
down or back off the power.
The only amps I have found that will truly do 1500 watts of RTTY
continuously are Alphas. I currently have a 9500 and in the past have
had a 91b. Any of the late model Alphas will do what you want. Either
avoid everything else or be satisfied with reduced power.
IMO the 9500 with its autotune memories and ability to handle SWR up
to 3:1 without a tuner make it the best RTTY contest amp available
with the possible exception of the Prometheus which costs twice as
much and only has a SWR range of 2:1.
73, Bill W6WRT
------------ ORIGINAL MESSAGE ------------(may be snipped)
On Tue, 6 Sep 2016 15:09:33 -0400, you wrote:
>Also, please advise what amps will generate 2,000 watts on 160-10 and
>easily produce 1,500 watts continuous duty? (I'm a CW & RTTY contester)
>
>Thanks & 73,
>
>Dick- K9OM
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
Amps Reflector - Contesting.com Ham Radio Mailing
Lists<http://lists.contesting.com/mailman/listinfo/amps>
lists.contesting.com
Welcome to the Amplifier mailing list! This list is intended for the exchange
of information on HAM RADIO Amplifiers related topics ONLY. Our goal is to keep
...
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|