[AMRadio] Mod Transformer


Bernie Doran qedconsultants at embarqmail.com
Sat Jan 24 22:51:17 EST 2009


Hi Paul: just checked the data sheets for 807s. at 600v and 56 watts out Z 
is 10,000 ohm, in ab2 at 80 watts out Z falls to 6900 ohms.  any thing even 
close to those should work, problem is being able to find one.  good luck 
with the 807s in rf service, they can be very tough to tame use a shield 
around them up to just a little above the bottom of the plate.    Good luck 
Bernie W8RPW
----- Original Message ----- 
From: "Paul Baldock" <pbaldock at verizon.net>
To: <amradio at mailman.qth.net>
Sent: Saturday, January 24, 2009 7:35 PM
Subject: [AMRadio] Mod Transformer


> Does anybody have a good reference as to how to calculate modulation
> transformer requirements?
>
> Thanks
>
> - Paul
>
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