I have used my K2 with a DEMI 2M transverter board in it to drive transverters from 902 through 10368 MHz for many years. When I used it to drive both 902 and 903 MHz portions of that band, the output was very much lower when 29MHz was in use for 903. I can't say whether it was due to the 29 MHz IF or the 144MHz transverter output. I didn't pay much attention to spurs as 902/903 is a trashy band anyway. I have made many nice QSOs with the setup.
73, Dave, K4TO On Sat, May 19, 2018 at 1:18 PM Steve Kavanagh via Elecraft < [email protected]> wrote: > The K2 is specified to operate on 10m only up to 28.8 MHz. While > contemplating possible future VHF rigs for a multi-operator multi-band > environment, I have wondered about using a K2 as an IF for VHF transverters > at around 29-29.4 MHz (to avoid interference with bands using 28 MHz IF). > > Both of my K2s seem to operate (VFO synthesizer works) up to 30 MHz. At > 29.5 MHz the available transmit power (QRP) is starting to drop off and > this is quite noticeable at 30 MHz. The QRP PA efficiency drops off > somewhat as well. There are a few receive birdies on the 100 watt radio, > but the QRP one is pretty quiet - nothing that should be noticeable under > the extra noise coming from a transverter. Turning the preamp on makes > extra noise as it should (but it is after the bandpass filters so that > doesn't mean a whole lot). But it seems that it should work ok as long as > I don't want more than 4-5 watts (most likely I'd use a K60XV), perhaps > with a bit of bandpass filter tweaking. > > Are there any caveats that I am unaware of? Spurious emissions, perhaps? > Has anyone tried using their K2 above 29 MHz? > > 73, > Steve VE3SMA > ______________________________________________________________ > 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 > Message delivered to [email protected] > ______________________________________________________________ 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 Message delivered to [email protected]
