[TenTec] Details on LSB carrier problem

[Ernie Popp]

Carrier present on LSB

 

Many thanks to all who responded  to my problem.  Here is some more details on my LSB carrier problem.  My first indication was from my watt meter.  While on 40 meters, I notice a significant reading when I hit my ptt switch. I disconnected the mic and measured about 10 watts of carrier.  This was with just under 100 watts of power.  10% seemed very high.  With the help of N1JP, we checked it on his service monitor.  John works as a service tech for communications shop and has access to top of the line equipment.  After verifying the problem,  we used the service monitor to adjust the balanced modulator.  It seemed to adjust easily to a very low carrier level.  About a week later, I noticed problem had returned.  This time I used my watt meter an another rig (TS440) to adjust it again.  When I checked it about a week later, I find about 8 watts of carrier.  There is no measurable carrier on USB.  I have sent an email to Paul at TT for the proper procedure for adjusting the modulator as recommended  by one of the responses.  Tnx again to all who have responded to my problem.

 

73,  Ernie K2EP