[ARC5] What the heck is a "1/2 harmonic Q-5er?

[Doran Platt]

Bob,
Yes, the concept was written up in ER magazine by Joe, WA3EJT.  I simply loop couple the Q-5er to the last IF of the BC-348 and tune the LF receiver to 1/2 the IF of the BC-348 minus 50 kHz.  I adjust the variable IF cans in the LF receiver to about 1/2 down and all works really well.  The BC-348 becomes entirely usable in crowded conditions.
Jeep K3HVG

> On May 9, 2020 at 10:28 AM Bob Groh <bob.groh at gmail.com> wrote:
> 
>     Just caught K3HVG's recent email in which he mentions wanting a BC-453 or R-23 for a "...1/2 harmonic Q-5er for BC-348...". I am certainly familiar with using the BC-453 as a tunable IF for other receivers and rather suspect this is a variation of that (the BC-348 has, I believe, a 915 kHz IF).  The "1/2-harmonic" thingie does intrigue me!!
> 
>     Thanks for the bandwidth.
> 
>     73
>     Bob Groh, WA2CKY
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