Note
Ham Radio, Jul 1976, p. 80.
QST, Sep 1978, p. 145.
Ham Radio, Jan 1979, p. 86.
QST, Dec 1980, p. 197.
QST, Sep 1981, p. 166.
QST, Feb 1982, p. 160.
The SCR1000 is described as the "State of the Art in VHF FM Repeaters," conservatively designed for years of trouble-free operation with high quality and reliability. It was aimed at amateur repeater groups and features operator convenience, accessory interfacing, and high audio performance.
Features:
– Features a built-in AC power supply with instant battery switchover capability for emergency operation.
– Control Logic: Uses state-of-the-art CMOS control logic and timers with no relays.
– Front Panel & Controls: Includes full metering of critical levels, front panel controls for timers and audio frequencies (AF) levels, as well as lighted push-buttons for control/test functions and status indicators.
– Receiver Front End: Employs an exclusive Spec Comm MOSFET/Hot Carrier Diode front end to greatly reduce desensitization and intermodulation (IM) problems.
– Built-in IDer: Comes with a field-programmable identifier featuring fully adjustable speed, pitch, timing, and levels.
– Interfacing & Accessories: Equipped with jacks for autopatch, remote control of the transmitter, DC output, AF input/output, COR switch, and other options.
– Included Equipment: Supplied with 0.0005% Sentry crystals and a Turner local microphone.
– Custom Modifications: Options available include 'PL' (Private Line / CTCSS), an 8-Pole Receiver Filter, High/Low Power configurations, Multi-Frequency capability, etc.
Specifications
– RF Output: 30 Watts (Infinite VSWR proof)
– Sensitivity: 0.3 uV 20 dB quieting
– Selectivity:
-6 dB @ pm 6.5 kHz
-58 dB @ pm 15 kHz
-90 dB @ pm 30 kHz
(Sharper 8-Pole Filter available)
– Desense / Overload: With 1 uV desired signal, desense just begins at approximately 50,000 uV @ 600 kHz
– Spurious Response: 70 dB minimum
