I decided to check the effect of different XFIL offsets on Diversity and thought some of you might be interested:
XFIL/Offset: Main 2.7k -0.83 1.8k -0.00 500 -0.78 200 -0.91 Sub 2.7k -0.83 500 -0.78 I fed my XG1 to ANT1, set both Main and Sub RXs to Main ANT1, and then varied WIDTH to toggle the different filter combinations: Main/Sub: 2.7k/2.7k - No freq or phase difference (as expected) 1.8k/2.7k - ~2 Hz warble (probably not objectionable on SSB) 500/500 - No freq or phase difference (as expected) 200/500 - ~0.2 Hz warble (i.e. 1 cycle every ~5 seconds, not objectionable on CW) I've been using the latter combination recently and was surprised it was not as noticeable as I expected. Just decided to check it and thought others might be interested. I don't think my results would apply to everyone, but this may mean having identical offsets is not as critical as I once thought. 73, Bill W4ZV _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
