[drakelist] T-4XC problem on CW

I have a T-4XC that works fine on SSB but when I switch to CW and key the transmitter, It has full or a lot of drive applied and the gain control has no effect or control over the drive. Has anyone out there run into this before? I thought I would check before I start looking for the

Re: [drakelist] T-4XC problem on CW

Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Terry - On CW the GAIN control varies a DC bias on the Balanced Modulator diodes to unbalance them. Perhaps that section of the GAIN control has lost

Re: [drakelist] T-4XC problem on CW

I will look and and see Garey. I'll let you know. I have been studying the circuit and just getting familiar with it. Terry In a message dated 4/4/2008 11:11:24 A.M. Eastern Daylight Time, [EMAIL PROTECTED] writes: Garey Barrell [EMAIL PROTECTED] made an utterance to the

Re: [drakelist] T-4XC problem on CW

OK Garey the ground is there. The pots both check about 520K ohms across the full windings and checking at the center terminal, the back pot checks 0-520K ohms. The front pot nearest the panel checks 0-15K ohms across the full range. I must have a problem somewhere else.

Re: [drakelist] T-4XC problem on CW

Garey Barrell [EMAIL PROTECTED] made an utterance to the drakelist gang -- Check to see that the voltage on the pot wiper is varying. I don't remember the values, but as I recall there is a series resistor to convert it to a