Date: Wed, 05 Apr 2006 08:30:11 -0700 From: [EMAIL PROTECTED] Subject: Re: Frequency Spacing?
At 4/5/2006 07:27, you wrote: > >How close, frequency spacing wise, can a couple of VHF (2 meter) repeaters > >in the same equipment room on the same short tower be made to work well > >without much trouble or extra expense? How does 45 Kc. with same 600 Kc. > >offset sound? What will work this close and what won't? > My 2 cents worth. Seven years ago at Lake Tahoe at 8000' ( harsh winters ) on a 40' tower we put 2 repeaters and a remote base receiver using 2 antennas. At the top of the tower we use a DB 2 bay folded dipoles for master receive. Receive frequencies 144.55, 146.25, 147.195. Using 2 4" bandpass cavities for each frequency. 25' lower we use 5 element yagi side mounted to a 2 channel combiner. Tx 145.150, 146.850. Both transmitters are less then 30 watts using 2 isolators and 2 4" bandpass cavity for each transmitter. This has worked flawless, good tower bonding is a must and using copper hard line and rg 214 jumpers (no 9913 type cable for this installation). Chris n6icw http://www.n6icw.org 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/