[BC] Gates BC-5 and 10H

Gary Peterson kzerocx
Fri May 20 08:18:25 CDT 2005


As I recall, the BC-5H had a 3CX2500F3 in the final and a pair of the same
for modulators.  The RF driver was a 4-400.  The original modulator-driver
had 30 some transistors.  Occasionally, the modulator-driver would pop half
a dozen.  I remember replacing the modulator driver with an improved version
that  used far fewer devices.  I don't recall ever having a problem with the
newer unit.

Gary, K?CX
Rapid City, SD

"ISTR the Gates BC-5H and BC-10H were fully transistorized except for
modulators
and finals just like the MW-5 and MW-10. The difference was they were plain
old high level plate modulation also like the MW-5 and MW-10 and, naturally,
had a pair of modualtors (3CX3000's IIRC) and a pair of finals because two
were less expensive than one (believe these were 3F2500's). ISTR that the
"H" designation meant "hybrid" IOW tubes with solid state drivers

Didn't the  BC5H and BC-10H had an RF Driver tube?

Dave"




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