Provided 2 yagi antennas separated by 100-150m and each has F/S of 40db you can get some 80 db isolation and stop warring about wide band noise from adjacent radio.
73, Igor UA9CDC > Bill Coleman wrote: > > > At NQ4I, with antenna separation of just a few dozen meters, we can > > often receive effectively within 10 kHz of the primary station. > > How do you do this? This field day, I found that having a station on SSB > in the same band with me when I was on CW was really problematic. > Antennas were oriented for minimal coupling and power was 100 watts. > > Rigs in this case were various Kenwoods, but I've also experienced this > with other Japanese radios. The problem seems to be transmitted wideband > phase noise that starts when the ptt is closed (the actual SSB signal > does not seem to be a problem). We do have bp filters, but of course > they don't help on the same band. > > We haven't had K2's at FD (I am the only one who has one). What kind of > rigs are in use at NQ4I? > -- > 73, > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco > _______________________________________________ > 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 _______________________________________________ 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
