[Amps] Alpha vs Henry

[Mike]

I have used the AL-1500 for RTTY and SSTV at 1500 watts for contests, I just
turn the fan up to leaf blower mode and it runs just fine.  I have not been
able to break the thing yet, It sure seems to be the best amp that
MFJ/Ameritron make for sure and for the price, I think I paid 2k for it 5
years back.

-Mike

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Al Kozakiewicz
Sent: Wednesday, April 06, 2011 5:36 PM
To: amps at contesting.com
Subject: Re: [Amps] Alpha vs Henry

1500 watts continuous for 30 minutes; 2500 for 30 seconds. 

Even if I do nothing but call CQ every 2 seconds, that's probably "only"
about a 60% duty cycle.  I'm just trying to get a feel for how much derating
is prudent when using the thing for extended periods of time.

73

Al
AB2ZY

-----Original Message-----
From: Carl [mailto:km1h at jeremy.mv.com] 
Sent: Wednesday, April 06, 2011 5:37 PM
To: Al Kozakiewicz; amps at contesting.com
Subject: Re: [Amps] Alpha vs Henry

What does Ameritron say?

Carl
KM1H


----- Original Message -----
From: "Al Kozakiewicz" <akozak at hourglass.com>
To: <amps at contesting.com>
Sent: Wednesday, April 06, 2011 5:05 PM
Subject: Re: [Amps] Alpha vs Henry


> Can anyone tell me how much power an AL-1500 is rated to produce at a 100%

> duty cycle?
>
> During RTTY contests and outputting about 1000 watts, the tube side of the

> cabinet gets mighty warm.  The power supply side seems cool - but then, 
> that's with the cover on.  I don't know how hot is too hot and it would be

> useful to know at least how much continuous power the supply is rated for.
>
> Tube cooling is probably another issue...
>
> Al
> AB2ZY
> _______________________________________________
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> Amps at contesting.com
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