Daniels Electronics System Monitor

The System Monitor modules provide voltage regulation, system metering and audio monitoring for the MT-3 Radio System. The System Monitor includes a +9.5 VDC high current (5A) voltage regulator with an anti-latch hysteresis circuit. Selected options can include antenna relay drivers, front panel switch selectable meter outputs to check supply voltages, carrier strengths, etc, and audio amplifier and loudspeaker. If you have any questions or would like to place an order, please feel free to contact us.

A rotary switch on the front panel allows the various functions to be selected for monitoring. Two front panel jacks, or the optional analog DC voltmeter, are provided for monitoring of selected functions. An audio amplifier and loudspeaker allow for audio monitoring. Front panel controls allow for audio volume adjustment and for selecting audio from receivers A or B, or turning the audio circuits off reducing power consumption. A LED indicator illuminates when the audio circuits are on. A front panel switch enables PTT on both transmitters for testing.

Stock Code	Basic Features	Buy Now
SM-3-H0-014-00	Standard SM-3 with no relays or meters (14 HP width)	Buy Now
SM-3-H0-014-05	Audio Monitor for SR-39-3 Multiple Receiver Subrack	Buy Now
SM-3-H0-R1N-00	SM-3 with single antenna relay on the front panel (21 HP width)	Buy Now
SM-3-H0-R2N-00	SM-3 with dual antenna relays on the front panel (21 HP width)	Buy Now
Some versions of the system monitor are available with a main power switch on the front panel. These are the SM-3-H0-014-40, SM-3-H-R1N-40 and SM-3-H0-MV1-40. A rotary switch on the front panel allows the various functions to be selected for monitoring. Two front panel jacks, or the optional analog DC voltmeter, are provided for monitoring of selected functions. An audio amplifier and loudspeaker allow for audio monitoring. Front panel controls allow for audio volume adjustment and for selecting audio from receivers A or B, or turning the audio circuits off to reduce power consumption. A LED indicator illuminates when the audio circuits are on. A front panel switch enables PTT on both transmitters for testing.
SM-3-H0-014-00 SM-3-H0-014-05 SM-3-H0-R1N-00 SM-3-H0-R2N-00