From what I see turning 360 Deg. a couple of times either way doesn't affect
my receive signal.
dave

"RP Jones" wrote in message
...
Been a wile 1977 since I played with a 160
I believe these antenna trimmer does spin 360 (not like a pot, or tuner
cap) .....does it function ?

-RP



"DJB" wrote in message
...
It's damaged. It just turns freely.
Dave

Dave wrote:

From what I see turning 360 Deg. a couple of times either way doesn't affect
my receive signal.

That may be normal. The effect of the trimmer can hard to notice.

Do you feel any resistance at all when you turn the knob, or does it
feel like it's not connected to anything?

The knob is turning a shaft that controls how much the capacitor
plates are meshed. A 180 degree turn of the knob will take you through
the entire tuning range (fully meshed to fully unmeshed). No need to
turn multiple turns. Turn it very slowly, and look for SLIGHT
variations in signal level. Sometimes, it's easier to tune to a
frequency with no signal, and tune the trimmer for maximum background
noise. The trimmer only needs to be adjusted when you change bands.

Art N2AH

It may very well not have any affect. It depends on your antenna and the
frequency if it has any effect or not (as Brenda Ann already said).
"DJB" wrote in message
...
From what I see turning 360 Deg. a couple of times either way doesn't
affect
my receive signal.
dave

DJB wrote:

From what I see turning 360 Deg. a couple of times either way doesn't affect
my receive signal.
dave

I got my DX-160 out of storage and checked out the antenna trimmer
variable capacitor. I was surprised to find that it's made to rotate
only 180-deg. (half turn) like a main tuning cap'. This is because the
straight edge of the rotating plates has an insulating joiner between
them which prevents those plates from passing through the stationary
plates more than a half turn.
If your trimmer cap' is like mine, the only way it could turn 360-deg.
would be if that insulating joiner has come off or the rotating plate
assembly has completely separated from the shaft. The rotating plates
are mounted in a series of ringed grooves on the shaft.
You need to remove the bottom cover of the radio and see what's going on
with the trimmer capacitor. Confirm that the rotating plates are still
on the shaft. Then look for the insulating joiner between them. Be sure
to look for any loose parts which may have fallen inside the radio,
especially when you first remove the bottom cover.


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ANT TRIM is 180 degree rotation on mine. As far as I remember, it is
there to provide a match. This receiver is designed for a high
impedance antenna- long wire.