VHF/UHF Purgatory

Well the TM-D710a is back from Kenwood.  They found nothing wrong.

My analysis:

Before shipping it off to Kenwood, I tried operating with two different antenna systems – separate antennas and feedlines – and the problem occurred on both.

The power supply is an Astron RS-20 which also powers my TS-590. If the problem was in the power supply then I’d have seen it while operating the 590.

That leaves only one possibility: the power cable between the supply and the radio. We’ll see what happens over the next few days.