Charles, I have a 500B, that came to me as basket case. I ended up with
all new iron. Hopefully, yours was stored well, and not ina damp
location. If so, it would be good to just fire it up and let it dry out.
Its amazing how much moisture those old open transformers
soak up. When all said and done,my GK 500B, had changes in the
modulator- A higher voltage on the plate transformer- 1500v. I put neg. 5
volts bias on the 811s. In the speech amp, I did not change anything. I
used a D104 mic and I got real good audio rpts. I also solid stated the
modulator power supply- the 816s kept flashing over,so bye bye. Also
switched to 3B28s in the RF power supply.
Have fun! Russ
From: Charles Ring W3NU <[EMAIL PROTECTED]>
Reply-To: [email protected]
To: [email protected]
Subject: [AMRadio] Globe King
Date: Wed, 18 Sep 2002 12:26:36 -0400
The time has come to revive my Globe King 500A, which is in generally
good condition and mostly unmodified. Where can I find info on it, such
as how to eliminate the "couplettes" in the modulator, and anything else
I need to know.
I don't have any ER issues but i do have much or most of AM
Press/Exchange 1984-92.
73 de W3NU
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