[AMRadio] Halli HT37 Phasing Mod problem

DOXEMF at aol.com DOXEMF at aol.com
Tue Nov 27 12:59:07 EST 2007

 I have been trying to get this like new HT37 on the air for awhile.
 The audio phasing modulator has been near impossible to properly ballance espeially using the manual instructions.
 So far have replaced a leaky low pf brown drop silver mica 
that corrected some of the problem but still am not able to get a properly phased output from the modulator.
 The audio seems ok up up to the rf stage where it won't align. The carrier osc is on freq ok but the carrier phasing adjustments do not work out. 
  Where would be a good location to apply a ballanced audio signal to bypass most of the original circuit?. 
  Has anyone come up with an alignment procedure using modern test gear?

More information about the AMRadio mailing list

This page last updated 20 Feb 2018.