[ARC5] GRC-9 BFO

[Robert Eleazer]

The GRC-9 receiver has a 456 KHZ IF and a BFO that runs at half the IF frequency, 228 KHZ.  I've never seen this done before.

Based on my own experience with adding a BFO to a SW receiver I can only assume this design feature is to prevent the harmonics from the BFO from overloading the receiver.  The receiver covers 2-12 MHZ so nothing below the BFO 10th harmonic could get into the set, and I assume that by that point the signal level is low enough to not be a problem/

Wayne
WB5WSV     

 

---
This email has been checked for viruses by AVG.
https://www.avg.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/arc5/attachments/20200421/beefb5ae/attachment.html>