Just FWIW, this is the K1XM design. http://www.k1xm.org/Antenna_Switch/MOAS_II/
Dennis, W1UE has boards available and I am in process of helping out for the enclosure. 73 Will K6ND -----Original Message----- From: Topband [mailto:[email protected]] On Behalf Of Tom Haavisto Sent: Wednesday, November 5, 2014 1:17 PM To: Larry Gauthier (K8UT) Cc: [email protected] Subject: Re: Topband: TX relay assemblies Hi Larry If/when you get this going, I too would be interested in this. All my antenna switching is now done via remote coax switches, and I have a bunch of remote controls by my operating position that I would like to eliminate. My thinking is - use the band data from the radio or computer to drive an SBC, and let it select the correct antennas. I will also need a four port controller of some sort that I would also see typing into the SBC. I have several antennas per band - this input would allow me to select the appropriate antenna in a "one of four". Some form on on-screen notification would also be helpful to let me know which antenna I have selected. Tom - VE3CX On Wed, Nov 5, 2014 at 7:19 AM, Larry Gauthier (K8UT) <[email protected]> wrote: > A few weeks ago there was a helpful, spirited discussion of antenna > relays here on the reflector. Can we extend that conversation to > pre-built relay assemblies? > > As background: I have recently become involved in writing software for > these new SBCs (single board computers) like the Arduino and Raspberry Pi. > My latest project is a band decoder - a UDP-based CAT decoder that > interprets rig-to-logging-program frequency traffic and selects relays > to drive my remote antenna switches. The band decoder collects UDP CAT > data via wi-fi, which means that it could be anywhere within wi-fi > range - including outdoors at the location of the remote antenna switches. Hmmm... > what if the Band Decoder and Remote Antenna Switches were consolidated > and the Raspberry Pi were to directly drive the antenna selection? > Then the question becomes whether these relay assemblies are capable > of handling 1 KW RF. > > These relays assemblies are: inexpensive, SPDT, opto-isolated from the > CPU, include reverse diode protection on the coils, rated for 220VAC > at 10 amps, and the PCBs have been notched to physically isolate the > relay common from the two outputs (hard to see that from the photos). > > http://www.amazon.com/gp/product/B0057OC5WK > > Will these work? How would I test them? > > -larry (K8UT) > > _________________ > Topband Reflector Archives - http://www.contesting.com/_topband > _________________ Topband Reflector Archives - http://www.contesting.com/_topband _________________ Topband Reflector Archives - http://www.contesting.com/_topband
