Many of those 3 letter agencies use them as Doug stated not only hundreds of miles but even more. I don't know how popular it is now to use 2 or 4 wire that long but I know of a couple of agency repeater boxes that have what appear to be a CSU connected to them now. Maybe they are changing to a dedicated T1 line and doing a A/D conversion on the voice and controls. Back in the analog days it was common to hear dispatchers from DC or LA on the VHF and UHF federal frequencies.
A few years ago a construction company had offices on a wide strech of FL and also on both coasts. Their simple UHF repeaters were connected by telco for a really decent wide area coverage machine. -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] Behalf Of Doug Bade Sent: Monday, August 01, 2005 9:58 PM To: [email protected] Subject: RE: [Repeater-Builder] 10 Meter Repeater I would disagree on the later comment as in the commercial world it would be quite incorrect.... We have been using telco 2 wire and 4 wire DC control and Tone control lines for years. I know of some dispatch operations which use them hundreds of miles, while not the cheapest method, it still works.... Telco has been providing them since the 50's or 60's at least....and still does, although getting DC continuity is no longer very easy.... Thousands ( probably millions ) of them in service in this country alone, let alone the rest of the world... Newer technology is replacing some of them with VOIP technology over Internet circuits instead of full period lines where time of arrival is not critical.. Doug KD8B At 09:18 PM 8/1/2005, you wrote: > > OTOH, if you can put your receiver and transmitter > > any appreciable distance > > apart, and use two antennas and feedline, then you > > just need to wireline the > > audio signals between them. > > > > >Wireline from about 1000 feet to a couple of miles ? >I don't think so. Sepreation of this distance for 10 >meters usually means a radio link. > > >__________________________________________________ >Do You Yahoo!? >Tired of spam? Yahoo! Mail has the best spam protection around >http://mail.yahoo.com > > > > > >Yahoo! Groups Links > > > > 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/
