The problem you describe is in all probability due to a PA self oscillation. In my case it was about 153MHz and was very intermittent. A new internal transverter cured the problem. It required a spectrum plot to prove that was what was happening.
The problem with my transverter instability showed up as occasional drive to my 3cm transverter when selecting SSB, keying the rig, but not speaking. The transverter would occasionally go to full transmit output. It was rather disconcerting and I tended to blame the 3cm system first! Also, if using the internal transverter with frequency locking, make sure you do the prescribed modification, if your K3 is more than 1 year old, or you may be one of the unlucky ones who experience small but noticeable frequency jumps every few seconds. The mod cures it completely. Up to then it marked the K3 out as my driver IF! 73 de Sam W5DDK Sent tomorrow from my time machine g4ddk.com g4ddk.blogspot.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
