SB-110a help

[Dave Leisman]

I have a Sb-110a and need some help with the transmitter.  Thereceiver 
is one of the best I have heard, even rivaling another 6meter rig in 
the shack, but for some reason I can't get the transmitter to work.

I am using an HP-23 power supply running through a bird wattmeter and 
into a Cantenna.  I am using a Tektronics scope with a Hewlett Packard 
signal generator in addition to a normal DVM.  All the voltages and 
resistances check ok or within nominal ranges when compared to the 
manual.

I have measured the rf coming from the LMO during transmit and have a 
strong signal, no problem.  Good signal through the early stages up to 
the balanced modulator which is where it gets touchy.  I get a signal 
up to primary of T-5 on the Carrier Generator board, but nothing on the 
secondary side of the transformer. I check continuity between the 
associated pins of T-5 (pins 1 to 2, and pins 3 to 4)and all seems well 
and there doesn't appear to be a short grounding the signal to the  
outer can.

The band pass filter works just fine, and the tubes are all in good 
shape too.  

But this situation with T-5 is a mystery to me and is keeping this 
great rig off the air.

Anyone have any suggestions?

Dave, W8QW
-- 
CoreComm Webmail. 
http://home.core.com

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