Matt, The multi-op NI5T operation in the CQ 160 contests at the N5BG station are done in the manner you are inquiring about.
We run THREE K3s, one running and two S&P on Topband, all three transmitting with full 1.5 kW output power. Granted, we exclusively use Beverage antennas for receiving, and the Beverage field is at some distance from the TX antenna. We copy stations with the S&P positions to within a few kHz of the CQing position. Many times we operate in full duplex on the same freq, with one of the S&P positions listening on the CQ frequency in a different direction than the CQ position is listening. This allows us to listen in multiple directions with the Beverages. We do not and have never had any problem doing this with the K3s or with the lineup of FT-1000 MPs we previously used. Never a single instance of receiver damage while operating in this manner the past ~13 years. The KEY to successful in-band duplex operation is ISOLATION, either by polarity or physical antenna separation, or both. YMMV, and good luck with your trial. 73 de Milt, N5IA -----Original Message----- From: Matt Murphy Sent: Wednesday, March 21, 2012 12:24 PM To: Elecraft Reflector Subject: [Elecraft] two k3's on the same band Just wondering if anyone has any experience using two K3's on the same band (for example, one for running, one for mults in a multi-op single transmitter scenario). Is there any danger of damaging the receiver(s) by transmitting with high power so close by (different antenna, same property). Is there a difference if the transmission is a few KHz away vs (accidentally) on the same frequency? Just curious what sorts of precautions (if any) ought to be taken and what solutions exist (if necessary). 73, Matt NQ6N ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
