--- [EMAIL PROTECTED] wrote: > Hi, all -- > > I am on the technical committee of an amateur > repeater club. A club in the next county has > approached us to ask about sharing one of our 2m > receive sites with them. It's a commercial site and > we are there at the pleasure of the owner, who is > willing to accommodate them and thinks that there > are no bad mixes. > > The other club has asked to share our 2m receive > antenna and feedline, and has volunteered to install > whatever equipment we specify so that our site's > performance is not degraded. > > While this sounds doable to me, I am more of a > digital guy than an RF guy. What should we install > in order to do this "the right way" without > degrading our site's performance? > > Our system transmits on 146.88 MHz and receives on > 146.28. > We use a Motorola receiver (I think it's a Micor). > The other club's system transmits on 147.345 and > receives on 147.945. > Both have links in the 440 band. > Neither system will transmit on 2m from this site. > > > Any advice or recommendations as to architecture, > equipment that works (or doesn't work!), or points > to be included in a Memorandum of Understanding, > would be appreciated. > > Regards, > Bob Koblish > > [EMAIL PROTECTED] > >
It all depends on what kind of RF in involved at that site, but one way to do it (and there are many) would be to take your feedline and go through a DCI filter to attenuate the out of band stuff that might be there. Then run into a good pre-amp (ARR, Angle Linear, etc) and split the output to the two RX. You could use a commercial unit, or construct one yourself for a couple of bucks, or just put a tee on the preamp and run a cable to each RX (this may or may not work well, depending on impedences and cable lengths involved, but its easy to try). You'll want to have a fairly low noise figure preamp, and fairly decent gain (15-20 dB) to get best performance out of each RX. Link to DCI: http://www.dci.ca/?Section=Amateur Joe __________________________________ Do you Yahoo!? Friends. Fun. Try the all-new Yahoo! Messenger. http://messenger.yahoo.com/ 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/
