One can use JAVORNIK, transverter with 2 RX... http://lea.hamradio.si/~s53ww/xvrt/xvrt.htm
http://lea.hamradio.si/~s53rm/JAVORNIK%20144.htm 73' 7S7V Message: 3 Date: Mon, 13 Sep 2010 09:09:01 -0800 From: "Edward R. Cole" <[email protected]> Subject: [Elecraft] two 2m-Transverters for diversity reception on 2m To: [email protected] Message-ID: <[email protected]> Content-Type: text/plain; charset="us-ascii"; format=flowed John is correct. Diversity receivers require a common LO. This is provided in the K3 with the aux receiver, but adding VHF transverters to both receivers will not add properly if they are running separate LO's. I am in the process of setting up a 2m dual-polarity receiver using two transverters but run with one LO driving both units. I discovered that DEMI is developing a dual-Rx transverter (two Rx antenna ports and IF outputs) that implements this in a single unit - I'm on the short-list to get one when available). Just connecting two separate 2m transverters will not ensure proper phase relationship between the two IF outputs so one could end up with a situation where the two signals null each other. This is analogous to combining two transmit amplifiers. If the outputs are out of phase energy from one will to into the other with disastrous effect. 73, Ed - KL7UW ------------------------------ ______________________________________________________________ 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
