Hello All,
I also would like to use 3.5 to 4.0 mhz for the IF frequency . I have completed the homebrew 630m transverter to work With the K3 . I am using 7 mhz IF , It seem to be stable , However It’s easier for me to build a more stable oscillator at 3.5 mhz. Also there is a broadcast station on 7.475 mhz . I can see the carrier on 475 khz , I have tried a few things To filter this carrier out, So far no luck , What a pain. Yes the 80 meter IF would be nice. 73 Ken K5DNL ================================================= ________________________________ From: Edward R Cole <kl...@acsalaska.net> To: Jim Miller <j...@jtmiller.com> Cc: Elecraft Reflector <elecraft@mailman.qth.net>; "600...@w7ekb.com group" <600...@w7ekb.com> Sent: Wednesday, September 11, 2013 2:37 AM Subject: Re: [600MRG] [Elecraft] Use of K3 on 600m (and below) Jim, Yes, the lowest transverter IF is 7-MHz. Of course you can operate the K3 in low power transceive on any frequency from 490-KHz to 32-MHz if in the TEST mode. Only issue is VFO readout is the IF and not the operating frequency of a converter or transverter. But say you use 3.472-3.478 MHz as your IF? Your LO would be 3.000 MHz. This could even be a DDS oscillator locked to a 10-MHz reference. A simple mixer and LO without filters would work 0-500 KHz (maybe). The wider issue if using other ham transceivers that only operate in the ham bands. My K3 has the EXREF board for referencing to an external 10-MHz source. This enables 0.1 ppm accuracy. A 10-MHz LO is 1-Hz stabile. 73, Ed - KL7UW At 03:58 PM 9/10/2013, Jim Miller wrote: >It would really be nice if K3 would support 80m as a transverter frequency. >If it did it would enable 3.5-4.0Mhz to reflect the full 500Khz from a low >band transverter. > >jim ab3cv 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com "Kits made by KL7UW" _______________________________________________ 600MRG mailing list 600...@w7ekb.com http://w7ekb.com/mailman/listinfo/600mrg_w7ekb.com ______________________________________________________________ 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