[Collins] 51J series input coil antenna requirements.

[Bill Kirkland]

Agreed.  Generally it is good to terminate in the correct impedances.

That antenna trimmer cap has caused me a lot of grief though.
You work on a receiver, have it all tuned up, come back a week later
and wonder why the sensitivity is so poor.  You check everything twice
and are all set to pull it apart and if you are lucky you remember that
you twisted the antenna trim.  Even more fun is when you hook the
51j-3 up through a transmatch and decide to play with both the transmatch
and antenna trim.

>Which is not to say that with an imperfectly matched antenna that an
>antenna trimmer might not improve receiver performance.
>--
>73, Jerry, K0CQ, Technical Advisor to the CRA
>All content copyright Dr. Gerald N. Johnson, electrical engineer
>
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