[UK-CONTEST] Amplifier Advice ACOM 2000's

[David]

The Acom 2000 was designed to run 1500 watts continuous carrier output for
hours on end. So it can be run on RTTY contesting with its circa 50% duty
cycle with a huge reserve. 

Most amplifiers being so called under run the only bit you are under running
is the transformer. Half power out will dissipate almost the same power in
the PA devices as running full power. However if the transformer is
deliberately fan cooled will make a huge difference to its power capability
compared to still air.

73 David

-----Original Message-----
From: uk-contest-bounces at contesting.com
[mailto:uk-contest-bounces at contesting.com] On Behalf Of Jim Balls
Sent: 24 January 2012 20:24
To: uk-contest at contesting.com
Subject: Re: [UK-CONTEST] Amplifier Advice ACOM 2000's

Most of the video's on you tube I've seen of contest operations have the
amps running flat out!!

If you got it, flaunt it ;0)

-----Original Message-----
From: Bob Harrison
Sent: Tuesday, January 24, 2012 7:15 PM
To: uk-contest at contesting.com
Subject: Re: [UK-CONTEST] Amplifier Advice ACOM 2000's

My Merc is governed to 155MPH...... of course I take it to the limit
everyday

73 Bob G4UJS

> -----Original Message-----
> From: uk-contest-bounces at contesting.com [mailto:uk-contest- 
> bounces at contesting.com] On Behalf Of David Honey
> Sent: 24 January 2012 18:53
> To: uk-contest at contesting.com
> Subject: Re: [UK-CONTEST] Amplifier Advice ACOM 2000's
>
> On 2012-01-24 16:51, Ken Eastty wrote:
> > 5. ACOM 2000, friends and contest groups use these (under-run of 
> > course in the UK)
> >
> > Under-run? Pull the other one.
> >
> > Contest entries from UK stations using  Linears  capable of running 
> > more than 1kW (or much less on 4m) should be disallowed.
> > I notice that some operators are very reticent when it comes to 
> > telling what amplifier they use.
> >
> An amplifier that is rated at 1kw is rarely rated for high duty 
> cycles, and for contest use you want to be sure the amplifier can run 
> for an extended period without overheating. Using a 1kw amplifier at 
> 400w achieves that. I don't buy the argument that just because some 
> one has the equipment to do something illegal automatically makes them 
> guilty of using it in that manner.
> It reminds me of the joke of an accused being charged with a crime and 
> then asking the judge to also charge him with rape. After all, he had 
> the equipment. :-) _______________________________________________
> UK-Contest mailing list
> UK-Contest at contesting.com
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