Introduction - Marti Electronics SRPT-40A User Manual

INTRODUCTION

See the SPECIFICATIONS & ORDERING section for a listing of available frequency
ranges and power models.
The Marti Model SRPT-40A is a wide-band – high power RPU Transmitter designed to operate in the Remote Pick-
Up Broadcast Service as defined in Part 74, Subpart D, of the FCC Rules and Regulations. The SRPT-40A is frequency
synthesized up to 40 MHz wide and has an adjustable output power up to 50 watts maximum. Refer to the
SPECIFICATIONS & ORDERING section for a listing of availaible frequency ranges and power models. This
transmitter, when used with the recommended companion receiver, provides a remote broadcast link having audio
quality not approached by conventional voice communication radio equipment. The SRPT-40A transmitter operates
from both 90 to 264 volt, 50 - 60 Hz. AC commercial power, or 12-15VDC or 15-30VDC battery (or external supply) in
fixed, portable, or mobile, service. Four audio input channels are provided with individual mixing gain controls. A meter
and selector switch are provided for monitoring forward and reverse power, power supply voltage, PA current and audio
compression.
SRPT-40A Features:
•
Continuous-duty output - 50 watts maximum – 40 MHz minimum operating band.
•
Four balanced microphone mixing inputs, one switchable to balanced line level.
•
Frequency agile pushwheel switches can select any frequency in operating band.
•
"Dial up" frequency direct or indirect via 10 programmable channels.
•
No tuning or frequency look-up table required.
•
Frequency resolution: 12.5 or 10.0 KHz steps – user selectable.
•
Switching Power Supply operates on any AC voltage from 90 - 264 VAC, 50 - 60 Hz.
•
LEDs indicate High VSWR, Over-Temperature, AFC Lock, and Transmit.
•
Illuminated VU Meter for displaying Forward/Reverse Power, PA current, Power Supply
voltage, and Audio Compression.
•
External 12-15 VDC or 15-30 VDC supply capability and external transmit control.
•
High speed µ-controller for features such as auto re-lock due to power outage, last
frequency lock-on during power up, auto fold-back and recover due to high VSWR, auto
shutdown due to very high temperature.
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