Thanks to everyone for your responses and suggestions. I have decided to order a "TwoPak" rf switch from Array solutions. There are less costly ways to go, but I like the specs I see on their website. High pwr handling, good well above the highest frequency I intend to use, and >80 dB isolation between ports. I will still measure power on the unused port when transmitting through the other, to see how much I would be putting back into the K3. Only after this will I connect everything up to both antenna connectors on the K3 if all looks good. Will post here again when I have tested and have all connected & working.
73, Tim - N3XX ----- Original Message ----- From: "N3XX" <[email protected]> To: "Elecraft Reflector" <[email protected]> Sent: Thursday, May 20, 2010 6:18 AM Subject: [Elecraft] Connections to K3 ant 1 & 2 > Hi to all on the list, > > I just finished building my K3 kit a few weeks ago (4175). All went well, > and the new xcvr is up & running with no problems. > The antenna setup at my qth is a single cable from the entrance panel at > the > house going out to tower #1, through a remote antenna switch to select > from > antennas on that tower or another connection going to tower #2. At tower > #2 > is another remote antenna switch to select various antennas on that tower. > In the shack I have an amp for 160-10 meters, and an amp for 6 meters. > I would like to connect my single cable coming in from the entrance panel > to > a 2 way coax switch, with one of the ports going to my 160-10 meter amp, > and the other going to my 6 meter amp. Then the 160-10 amp would be > connected to the K3 antenna connector 1, and the 6 meter amp would be > connected to K3 antenna connector 2. > Both amps will operate at the legal limit easily, and my concern is that > when xmitting through one of the antenna connectors & amp, I will put too > much rf back through the coax switch to the unused K3 antenna connector, > and > possibly damage the K3. > I have been changing cabling manually but would really like to be able to > just operate a switch to make the change. > So, if anyone on the list doing something similar to what I have in mind, > I > sure would like to hear about your setup, what kind of switch you are > using, > how much port to port isolation is necessary to be safe, etc. > > Tnx & 73, > Tim - N3XX > > ______________________________________________________________ > 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 ______________________________________________________________ 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
