[Drake] TR4C BAL MOD

Dick KF4NS kf4nsradio at verizon.net
Mon Nov 15 15:33:06 EST 2010


Still puting the finishing touches on the ole rig and was using 
Garey's great CD for reference while determining the real condition of 
the filters. That completed (one is bad), then I proceeded to check 
the adjustment of the BAL MOD for proper CXR BAL as per the section 5 
steps for alignment.

Right off the diving board I got twisted around. It says to adjust the 
bias according to the earlier steps in para 5-6 which says adjust for 
.1A, now key the rig in X-CW and if the plate current exceeds .15A 
adjust RF TUNE for .15 and if it is less than .15A adjust the CXR BAL 
pot for .15A , what is the deal with this ".15A" ?

Why do that after setting the bias for 1.0A at the beginning? I tried 
to adjust the pot and it does nothing. How critical should the reading 
be while adjusting the pot? How many turns are there to this pot?

73, Dick KF4NS
St Petersburg, FL 33714 USA
Keep The Glow!




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