How about this, there are other RX antenna switches here too. http://www.udcsys.com/RX-6ReceiveAntennaSwitch.html
Jay, WX0B Jay Terleski Array Solutions 214 954 7140 On Sun, Jul 5, 2015 at 11:00 AM, <topband-requ...@contesting.com> wrote: > Send Topband mailing list submissions to > topband@contesting.com > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.contesting.com/mailman/listinfo/topband > or, via email, send a message with subject or body 'help' to > topband-requ...@contesting.com > > You can reach the person managing the list at > topband-ow...@contesting.com > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Topband digest..." > > > Today's Topics: > > 1. Video Switch for Low Band Antenna switching (Roger D Johnson) > 2. Re: Video Switch for Low Band Antenna switching > (Herbert Schoenbohm) > 3. Re: Video Switch for Low Band Antenna switching > (Herbert Schoenbohm) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 04 Jul 2015 21:47:43 +0000 > From: Roger D Johnson <n...@roadrunner.com> > To: Top Band Reflector <topband@contesting.com> > Subject: Topband: Video Switch for Low Band Antenna switching > Message-ID: <5598547f.4050...@roadrunner.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I've been looking for a way to switch multiple receiving antennas to > multiple > receivers. I know some hams are > using video switchers but info on them is scarce. There is a Dynair > SVA-100B for > sale on eBay but no real description > of it's functions. > > It seems obvious that you can, for instance, switch input 3 to output 7 > but can > you simultaneously switch input > 5 to output 6? In other words, can you have more than one path through the > switcher? > > Any other ideas on switching greatly appreciated! > > 73, Roger > > > > > <http://antiqueradios.com/forums/report.php?f=2&p=2337227> > > > ------------------------------ > > Message: 2 > Date: Sat, 04 Jul 2015 18:30:57 -0400 > From: Herbert Schoenbohm <herbert.schoenb...@gmail.com> > To: topband@contesting.com, n...@roadrunner.com > Subject: Re: Topband: Video Switch for Low Band Antenna switching > Message-ID: <55985ea1.4040...@gmail.com> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Roger, as long as the switch is passive and not active it will work > well for you as unused ports are terminate in 75 ohms. I use a 12X1 > Dynairs here and they have excellent isolation plus it terminates the > unused reversible Beverage feedline (which is recommended for greater > rejection). I just cut the RG6 minus the VF to multiples of a half wave > length so the termination at the switch appears on the unused port. I > prefer this to running voltage out to relays which always seem to fail > at some point. > > > Herb Schoenbohm, KV4FZ > > On 7/4/2015 5:47 PM, Roger D Johnson wrote: > > Boxbe <https://www.boxbe.com/overview> This message is eligible for > > Automatic Cleanup! (n...@roadrunner.com) Add cleanup rule > > < > https://www.boxbe.com/popup?url=https%3A%2F%2Fwww.boxbe.com%2Fcleanup%3Ftoken%3Dnp%252Bsb5oLW0EM1MiGv38HJp5SUI58ppPRSOpvKCFUJoQ%252BC1b%252F%252Fd5cjSefau95xVXwxnFmSSwUatUl%252Fd%252BX4fby4vOtZvLohd1eJzWOO5EAZyS8V5GycsrS5GFxQEdl2XY62EXybK3klIQ%253D%26key%3DA7%252F34s4sBlm2aKuS%252BezNSB0IavmYLPaMHZ73KUHql5E%253D&tc_serial=21867422542&tc_rand=1661170955&utm_source=stf&utm_medium=email&utm_campaign=ANNO_CLEANUP_ADD&utm_content=001 > > > > | More info > > < > http://blog.boxbe.com/general/boxbe-automatic-cleanup?tc_serial=21867422542&tc_rand=1661170955&utm_source=stf&utm_medium=email&utm_campaign=ANNO_CLEANUP_ADD&utm_content=001 > > > > > > I've been looking for a way to switch multiple receiving antennas to > > multiple receivers. I know some hams are > > using video switchers but info on them is scarce. There is a Dynair > > SVA-100B for sale on eBay but no real description > > of it's functions. > > > > It seems obvious that you can, for instance, switch input 3 to output > > 7 but can you simultaneously switch input > > 5 to output 6? In other words, can you have more than one path through > > the switcher? > > > > Any other ideas on switching greatly appreciated! > > > > 73, Roger > > > > > > > > > > <http://antiqueradios.com/forums/report.php?f=2&p=2337227> > > _________________ > > Topband Reflector Archives - http://www.contesting.com/_topband > > > > ------------------------------ > > Message: 3 > Date: Sat, 04 Jul 2015 18:42:11 -0400 > From: Herbert Schoenbohm <he...@vitelcom.net> > To: topband@contesting.com > Subject: Re: Topband: Video Switch for Low Band Antenna switching > Message-ID: <55986143.6030...@vitelcom.net> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Roger, I took a look at this unit and it appears to be an active unit > rather than a passive switcher that you need for Topband. You can call > Dynair at 858-450-0504 and see if they can tell you where to download a > schematic. > > Herb, KV4FZ > > On 7/4/2015 5:47 PM, Roger D Johnson wrote: > > I've been looking for a way to switch multiple receiving antennas to > > multiple receivers. I know some hams are > > using video switchers but info on them is scarce. There is a Dynair > > SVA-100B for sale on eBay but no real description > > of it's functions. > > > > It seems obvious that you can, for instance, switch input 3 to output > > 7 but can you simultaneously switch input > > 5 to output 6? In other words, can you have more than one path through > > the switcher? > > > > Any other ideas on switching greatly appreciated! > > > > 73, Roger > > > > > > > > > > <http://antiqueradios.com/forums/report.php?f=2&p=2337227> > > _________________ > > Topband Reflector Archives - http://www.contesting.com/_topband > > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Topband mailing list > Topband@contesting.com > http://lists.contesting.com/mailman/listinfo/topband > > > ------------------------------ > > End of Topband Digest, Vol 151, Issue 3 > *************************************** > _________________ Topband Reflector Archives - http://www.contesting.com/_topband