Good morning everybody, Am I right in assuming that the LO frequency of the transverters is below the signal frequency as no frequency inversion occurs , or are some clever software tricks used to turn the IF frquency readout back to front if the transverter LO is on the high side, ie a 30 MHz IFoutput from transverter is made to look like 28MHz when signal frequency is say 144MHz (or 50 MHz ).
Reason for question. Am toying with the idea of retiring aged homebrew transverters - subject to approval from headquarters and piggy bank - but need more info on spurious response levels if LO is on the low side. 4Fo - 3Fsig = IF for example on 2 metres, which "crosses over" at Fsig = 145 MHz if I remember correctly. Bit early in the morning for this sort of thing. 73, Geoff GM4ESD _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com