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

[J Mcvey]

 I'm guessing that 913 KHZ is a harmonic of 456.5 KHZ , so there will be a weak response in the BC453 front end which doubles as a signal attenuation not to overload the radio. 
Obviously there must be enough signal left to work OK. 


     On Saturday, May 9, 2020, 11:34:33 AM EDT, Bob Groh <bob.groh at gmail.com> wrote:  
 
 Jeep, do you have a pdf copy of that article that you could share?  Sound's interesting although the idea of tuning the BC-453 to 1/2 the BC-348's IF minus 50 kHz is a bit mystifying. 
73, Bob WA2CKY
On Sat, May 9, 2020 at 10:09 AM Doran Platt <jeepp at comcast.net> wrote:

   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  ______________________________________________________________ 
ARC5 mailing list 
Home: http://mailman.qth.net/mailman/listinfo/arc5 
Help: http://mailman.qth.net/mmfaq.htm 
Post: mailto:ARC5 at mailman.qth.net 
 
This list hosted by: http://www.qsl.net 
Please help support this email list: https://www.qsl.net/donate.html 
  
   ______________________________________________________________
ARC5 mailing list
Home: http://mailman.qth.net/mailman/listinfo/arc5
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:ARC5 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: https://www.qsl.net/donate.html
______________________________________________________________
ARC5 mailing list
Home: http://mailman.qth.net/mailman/listinfo/arc5
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:ARC5 at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: https://www.qsl.net/donate.html  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20200509/70a486d7/attachment-0001.html>