I'm not so sure that a BPF would solve the problem even if they are on different bands as the COR may still trip even though the subRX is on another band...
~Brett (N7MG) On Mon, Sep 27, 2010 at 11:38 AM, Don Wilhelm <[email protected]> wrote: > Bill, > > My answer is not a "smart remark", but rather the truth - and that > answer is "Whatever it takes!" > There are so many variables that your question cannot be answered > specifically for your location. > Some of the variables are antenna polarization, physical distance, gain > of the transmit antenna and its heading relative to the receive > antenna. Trees, buildings and other objects that may shield the receive > antenna from the transmit ant, proximity of feedlines, how much > radiation is coming back on the feedline for each antenna, plus probably > a host of other factors that I may not have thought of. > > You could make some tests using a simple pickup antenna and a field > strength meter at your proposed location for the receiving antenna > before placing it. Position the temporary pickup antenna for the least > field strength. > Unless you have a lot of freedom in the physical location of the receive > antenna, the simple solution may be to switch in an attenuator for the > subRX when transmitting. If the main and the sub are going to be on > different bands, perhaps a bandpass filter would be a good solution - > again, the real answer is "Whatever it takes", and hopefully you can > begin to understand why that is the only answer possible. > > 73, > Don W3FPR > > On 9/27/2010 12:59 PM, Bill N3KKM wrote: >> The K3 manual indicates that the Sub Receiver's AUX antenna must be >> well-isolated from the transmit antenna to avoid activating the sub's >> carrier carrier-operated relay. From a practical, real world standpoint, >> what is "well isolated?" >> >> Bill - N3KKM >> > ______________________________________________________________ > 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 > ______________________________________________________________ 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
