Thanks to all who replied. Apparently, sometime between the manufacture dates of our 2 repeaters, Spectrum changed something in SCR200 receiver oscillator, such that the load capacitance is substantially different. We ordered crystals from ICM for the older of the 2, and whatever specs they worked from, the crystal would not warp down to freq without changing the trimmer cap value.
73, George, KA3HSW / WQGJ413 ----- Original Message ----- From: "Joe" <[email protected]> To: <[email protected]> Sent: Saturday, February 28, 2009 2:05 PM Subject: Re: [Repeater-Builder] SCR-1000 crystals > This seems to be Spectrum day! > > Here is the crystal page info for the SCR-1000, document dated December, > 1981. Hope this helps...... > > 73, Joe, K1ike > > George Henry wrote: >> Our club has 2 Spectrum SCR-1000 2-meter repeaters (one from 1988 and one >> from the early 90's) which apparently have different crystal specs... I >> am >> trying to find out the board revisions numbers or exact dates of >> manufacture, but in the meantime, does anyone have the specs for the >> various revisions of the TX and RX??? >> >> George, KA3HSW / WQGJ413 >> > >
