[TenTec] 160 Meter Problem

[Jim Allen]

I was sitting in the shack minding my own business last night when I
noticed on the DX cluster that W1AW/5 was on 1821.5 in Oklahoma.  I have
not tried 160M here, but do have a 130' dipole and an AH-4 to match it
with, which might work, so I thought, "what the hey?"

I got it all set up and could hear W1AW/5 extraordinarily well.  I moved up
the band a bit to tune and ........ nothing.  No output whatsoever.  I
checked... traced the coax, antenna connected to wattmeter, wattmeter
connected to Omni VI+, AH-4 tune control getting power, etc.  All seemed to
be in order.  I tried again... nothing.  The radio went into tune no output
no tone, nothing.  I switched to 80M, found a clear spot, tuned normally.
I went back to 160M, nothing.  I advanced the power knob from nothing to as
high as I dared... still nothing.

I then moved to the 706MKIIG, got it going on 160 and made the contact, no
problem, although I did have to use 100 watts instead of 5.

This is the first time I have tried this Omni VI+ on 160M, but it seems to
be working just fine on the other bands, very well, actually.

What could this be?  Where should I start?

73 de W6OGC  Jim Allen