Thanks for the info! I'll look for Terry at Dayton next week. This looks like exactly what I'm looking to do. Dave On Mon, May 8, 2017 at 3:10 PM Dana Shtun <[email protected]> wrote:
> Dave > I came across this from Terry K8ZN o > f Directiv > e Systems , and the Grid Pirates. > This was the “missing link” for VHF UHF! > The elecraft external band switch is ALSO very capable and will work on HF > or VHF/UHF, but it requires more hardware, which you can > buy online, it just gets messy… > > With a bit of modification Terry’s board talks to the K3 via the RS232 > port - the original design was computer driven via RS232. > This was featured in the World Above in QST in 2008 (attached) and here is > the link > to the Grid Pirates web… http://www.k8gp.net/station-equipment/moasu or e > mail Terry. He may have boards and parts left.It is capable of switching > 12 bands…but the K3 can only handle 10 if memory serves. > > I drive 2x24 V rotary switches from the board, one switches the 28 MHz IF > from the K3 for 222 and 432, and the other uses the 144 Mhz IF for my > microwave transverters, plus 144 and 50 > as well there are on board relays that move a Demi 4 port sequencer from > band to band via a set of 3 phono plugs per band, on the back. > Ive also modified it to provide 12 and 24 V switched output for relays and > also integrated a G4FRE / WW2R band decoder board into it just to give me > a full frequency display… ie 2304.1000 rather than 304.1000 on the K3. > > It all works great, I can jump from 50 through 2304 just by switching > bands on the K3. > > 73 Dana VE3DS > > > On May 8, 2017, at 14:49, Dave Fugleberg <[email protected]> wrote: > > Dana, I would be interested in learning more about your transverter > switching arrangement. Right now I have the K3 plus the Elecraft > transverters for 144, 222, and 432, using split IF and the Elecraft Aux > bus. Each transverter drives a power amp. That works fantastic for > contesting, but I want to add a couple bands. That means adding > non-Elecraft transverters, and some kind of switching setup. > 73 de W0ZF > On Mon, May 8, 2017 at 12:19 PM Dana Shtun <[email protected]> wrote: > > > > If you look at the schematic for the internal transverter there appear to > be available pins for “stacking” tranverters and switching the IF around… > similar to what exists with the external transverters. > > Which means if there were transverters you could add them internally…222, > 432, 902, 1296… > The biggest feature would be band specific sequencing and lines to > sequence amps, and preamps... > > Sure would make my life easier… but I’m using the "Mother of All Switch > Units" to control all my transverters and sequencing. > This talks directly to the K3. Makes VHF contesting so easy but its rack > mounted, would look better in a Elecraft style cabinet! jo > > If I took out the 100 w module there would be room to fill the box with > transverters….but a K3SVU would be nice eh? > > 73 Dana VE3DS > FN03 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] <[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]
