Heath SB-200 on AM

[Eddy Swynar]

Hi Ken...

A good rule of thumb---assuming the amplifier is biased for class B
operation---is that the carrier output for AM linear service is HALF of the
total plate dissipation, ex. if the tube used has a plate dissipation rating
of 100 watts, you can run it at 50 watts in AM linear service with relative
safety.

What I do with my HB 2x813 linear is load it up as usual, then crank down
the drive until the output is 125 watts...then I tweak the plate tuning
capacitor (watching for maximum RF output), & leave it there.

BTW, I monitor my signal at all times on an SB-610 'scope, too.

~73~ Eddy VE3CUI - VE3XZ





----- Original Message -----
From: "Ken" <wn2sqc at YAHOO.COM>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Sunday, December 16, 2001 10:31 AM
Subject: Re: Heath SB-200 on AM


> Hi List Members. Has anyone used the SB-200 for AM and
> if so how hard can you push the rig before the tubes
> melt? What output power should be expected and what
> grid and plate current would be appropriate for
> maximum AM output. Thanks for the help, Ken
>
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