[AMRadio] Matching a 100 watt PA am to drive 833'S

Merz Donald S merz.ds at mellon.com
Tue Jan 4 09:18:48 EST 2005

This was actually a popular approach during the pre-WWII era. So popular that UTC and Thordarson (and probably all the transformer manufacturers) made driver transformers that would match the low ohms output of the PA amp. But I have only seen these in sizes for lower wattages. The biggest one I have seen was for 60 watts. Maybe there are larger ones out there? 
Good luck.
73, Don Merz, N3RHT

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net]On Behalf Of Don Moore R Moore
Sent: Tuesday, January 04, 2005 12:11 AM
To: amradio at mailman.qth.net
Cc: amradio at mailman.qth.net
Subject: [AMRadio] Matching a 100 watt PA am to drive 833'S

I have a older BC 1F series gates transmitter.  I would like to do away
with the 845 driver tubes and drive the 833's with a 100 watt PA amp. 
Does anybody have any Ideas what I would need to match the amp to the
driver transformer of the 833's.
Don Moore
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