These repeaters got a bad reputation in part because of hams who tuned them be peaking rather than using the procedure in the manual. The PA was fairly efficient, but not unconditionally stable, and could produce spurs if not properly tuned.
One other issue was the combination of Spectrum repeater and ACC controller, which was once a very common setup. One of the busier systems in Atlanta in the 80's used this combo, and despite proper tuning, it was incredible dirty, with spurs at regular frequency intervals. Many hairs were torn out until it was discovered that the ACC's digital clocking noise passed down the PTT line was actually modulating the exciter. >From my point of view, that's a boo/hiss on both ACC and Spectrum. 73, Paul, AE4KR ----- Original Message ----- From: Mike Reed To: Repeater-Builder@yahoogroups.com Sent: Saturday, November 22, 2008 11:44 PM Subject: Re: [Repeater-Builder] Information on Spectrum Communications SCR-1000 I have one of those critters also, but no book. Spectrum wants a small fortune for it. As for the ID unit, it is a burned chip that is not really available. I would suggest an after market one. That is what I know so far... 73 Mike - N7ZEF ----- Original Message ----- From: "Keith Foor" <[EMAIL PROTECTED]> To: <Repeater-Builder@yahoogroups.com> Sent: Thursday, November 20, 2008 1:02 PM Subject: [Repeater-Builder] Information on Spectrum Communications SCR-1000 I have an SCR-1000 that was being used as a local repeater and then was replaced. I am looking for information on the control circuits, how to program the IDer, a service and or users manual and any other info I can find. The unit is VHF (not sure if that matters). There have been a number of modifications done to this unit that need to be removed and the unit put back to it's out of box configuration if possible. I thank you for any help you may be able to provide. Keith KB8VUL ------------------------------------ Yahoo! Groups Links
