Hay are local radio club has 2 repeaters on one 2 band antenna have have had a ham radio grade : Diplexer for years and it has worked on it seams I don't know the band name and i have one hear i have used for years with 100 watt radios and have had no trouble ken kb9yku
At 10:51 AM 11/14/2005, you wrote: >The commercial diplexer might only have to deal with >two transmit or receive frequencies feeding one >antenna. As such wouldn't the bandwidth on each port >be relatively narrow? > >For use with two repeaters, the VHF port would need to >pass both the TX and RX freqs at 600 kHz or 1 MHz >separation, and the UHF port would need to pass two >freqs 5 MHz apart. I would think that this kind of >bandwidth on each port would be rather difficult for a >diplexer, as now you're actually talking about four >freqs through the feedline/antenna. > >Perhaps this is why TXRX said they couldn't or >wouldn't provide something. > >Or am I all wrong about the bandwidth issue? I'm >looking at it from a duplexer point-of-view. > >Bob M. >====== >--- Doug Bade <[EMAIL PROTECTED]> wrote: > > > Kevin; > > > > Their perspective is the commercial world > > and dual band > > single antenna repeater systems do not really exist > > in these bands > > using that narrow view..... split in at the bottom > > and split out at > > the top they do, but not a dual band antenna. You > > are quite correct > > that it is not an issue if the antenna is a dual > > band, but not in > > their version of the world... Never ask the factory > > those kind of > > questions.. :-) They are not very amateur centric in > > this realm. > > > > I think as I mentioned, they mis-understood > > what he needed.. > > > > They also do not know that a T-pass > > combiner can be used > > cross band (VHF/UHF) also, but that is another > > discussion .... :-) > > > > TX/RX has great stuff but sometimes it is > > tough to get > > someone who thinks outside the box on the support > > staff.....although > > there are several folks there who are quite > > knowledgeable and > > normally very helpful. > > > > Doug > > KD8B > > > > > > At 09:55 AM 11/14/2005, you wrote: > > >n2len wrote: > > > > > > >Thanks for the info, I called them this morning > > they explained to me > > > >they can build a combiner using the same feedline > > feeding different > > > >antennas but not a combiner using the same > > antenna for 2 different > > > >uhf & vhf repeaters... > > > > > > > > > >I don't know why they would have told you that, > > unless they didn't know > > >that companies make multi-band antennas... > > > > > >The diplexer doesn't know (or care) how it is being > > used, and in this > > >scenario, only one diplexer is needed; at the > > bottom. > > > > > >Kevin > > > >__________________________________ >Yahoo! FareChase: Search multiple travel sites in one click. >http://farechase.yahoo.com > > > > > >Yahoo! Groups Links > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
