Lyle and company, To be clear are you talking about using another transmitter other than the K3's transmitter and external amplifier? This is my reading and I am just checking. Thank you.
73 Doug EI2CN -----Original Message----- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lyle Johnson Sent: 27 January 2015 23:45 To: Elecraft Reflector Subject: Re: [Elecraft] K3 Sub Receiver and protecting the Sub RX input In general, ensure the coupled energy into the receiver antenna connector is less than 1 watt under absolute worst case conditions, and preferably under 100 mW, and your receiver should be OK. Put another way, the antennas should be separated by 40 dB if running up to 1 kW, 30 dB if running up to 100W and 20 dB if running up to 10W. You might get away with 10 dB less coupling. If you can't get this level of isolation by physical separation and/or orientation of the antennas, provide some external means of reducing the signal to the receiver input. Yes, the K3 inputs are tested to higher levels than this, but why stress the radio and risk damage to or degradation of the receiver(s)? If you hear the receiver COR relay click when using the other transmitter, reduce the coupling between the antennas or otherwise prevent the excess energy from reaching the receiver input. 73, Lyle KK7P > ...can you please elaborate on what is sufficient antenna separation when a transmitter is operating on another antenna? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to turnb...@net1.ie ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com