Klaatu wrote:

You forgot to mention that with age, the antenna coaxial cable would get
water in it, and reception would suffer. Adjusting the trimmer would
make little or no difference in this situation. Replacement was the
only fix.


There would be little or no reception by that point, and replacing
the antenna was a common repair for me in the '60s & '70s. We kept a
used car radio antenna in the service department to test a radio in the
car. Unplug the car's antenna and plug in the test antenna. if you
picked up some stations, the antenna was bad & had to be replaced. At
that time we could get most OEM antennas delivered in two days or under.


--
The movie 'Deliverance' isn't a documentary!