[AMRadio] Screwiest Elmac problem ever

[w5jo at brightok.net]

Hummmm! maybe a microphone, cord or connector for a start?

Jim
W5JO



-----Original Message----- 


Maybe a couple of you follow the Elmac emails, but Gary, K3OS has had is 
AF67 do something weird.  He is a regular check in on the Old Friends group 
that meets on 75 meter 3 times a week here in the Upstate SC area.  It was 
working just fine, then the mod fell off to a very low level.  It does have 
a new modulator interstage transformer from Hammond, which was installed 
long prior to this problem, the rest original.  He is getting 40 watts out 
in CW and AM, the modulator has been checked end to end, including 
terminating the output transformer with a 5K load where he read 300 volts P 
to P across the secondary.  When you hook it all back up, you get 10-20% mod 
max.  Voltages, components, all check good, she just won't modulate.  Any 
ideas?

Charlie, W4MEC in NC