Marti Electronics SR–20M Manual page 8

SR–20M/SR–20C Features:
Mechanical – 19 inch rack mount design
Wideband operation – 50 MHz
SR–20M Models – Monophonic single channel operation within a 50 MHz band
SR–40C Models – Composite frequency agile operation within a 50 MHz band
Operation from: 1) 85V to 264V, 47 to 63 Hz AC source or 2) an external +10 to +14
VDC source
Frequency synthesized dual stage RF converter module with Automatic Frequency
Control (AFC)
Front panel signal attenuation control – used to minimize IMD products
Front panel squelch control
Front panel headphone control and receptacle
A microcontroller programmed to perform the following functions:
Front–panel switch and indicator control
AFC lock control
Metering control
Auto recovery from loss of ac/dc power
Squelch relay with contacts available for external switching
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