Simplex Repeater | Argent Data Systems

By: Argent Data Systems  06-Dec-2011
Keywords: Transmission, Remote Control, Mobile Radio

The ADS-SR1 is a multi-function voice recorder device that connects to virtually any handheld, base, or mobile radio. It features exceptional voice recording quality and higher capacity than any other comparable device on the market.

Simplex Repeater

A simplex repeater records incoming transmissions and retransmits them on the same frequency. This has the effect of doubling the time required to transmit a message, but while a traditional repeater typically costs thousands of dollars and might be semi-portable at best, a simplex repeater can be set up with a single handheld radio and operated from batteries. This makes it perfect for disaster response, home or campground use, and any place where radio range needs to be extended but the cost and complexity of a traditional repeater can’t be justified. Additionally, the unique ‘say again’ repeat-on-demand feature of the ADS-SR1 allows it to be operated in silent mode, repeating transmissions only when requested. This can be used to repeat a missed transmission or to check for missed calls, even hours or days after the last transmission was heard by the repeater.

Voice Mail

The ADS-SR1’s voice mail function operates like a telephone answering machine, allowing users to record messages for later retrieval. Up to 20 incoming messages can be recorded, and a separate voice mail access code lets multiple users retrieve messages without having to share the repeater’s regular security code.

Voice Beacon

Up to 10 voice announcements can be stored in the ADS-SR1’s non-volatile memory. Each message can be set to transmit at a specified interval, and a time offset setting allows beacons to be staggered or rotated. Intervals can be from a few seconds up to twelve hours. One message can also be configured to play in response to an incoming transmission. This can be used for repeater identification, or to provide instructions on using the repeater or voice mail. A separate inhibit timer stops the message from playing again for a specified time interval.

  • 218 seconds total recording time
  • 19.2 kHz sample rate for excellent voice clarity and SSTV compatibility
  • 10 voice announcements with independent timers
  • Programmable maximum message length setting
  • 20-year data retention with no power
  • Optional Morse code or voice identification
  • DTMF remote control for all functions
  • Operates from two AA batteries or external 4-28 V DC supply
  • ‘Say again’ function repeats last received transmission on command
  • Selectable courtesy tones
  • Audio output adjustable in hardware and by remote command
  • PTT modes for handheld and mobile radios
  • Upgradeable software for future enhancements
  • Programmable security code with auto-lock feature
  • Unit remains controllable even with stuck receiver squelch
  • 1 year warranty on complete unit, 5 years on flash memory


Keywords: Handheld Radio, Mobile Radio, Mobile Radios, Morse Code, Multiple Users, Remote Control, Telephone Answering, Transmission, Voice Identification, Voice Mail, Voice Mail Access, Voice Recorder, Voice Recording,

Contact Argent Data Systems


Print this page

Other products and services from Argent Data Systems


Tracker2 | Argent Data Systems

Plots received positions as waypoints - APRS stations, objects, and items received over the air can be passed to a GPS receiver to be plotted on its map display. Remote control via APRS - Most of the commands available at the console may also be issued through APRS station-to-station text messages. In addition, the transmit and receive frequency and RF power output can be set through the Tracker2, including by remote command.


APRS and Packet Radio | Argent Data Systems

It includes advanced features such as detailed waypoint output to NMEA, Garmin, and Magellan GPS receivers, full APRS digipeater support, remote control and configuration, KISS protocol support, weather station support, and the ability to use almost any combination of those features simultaneously.


Products | Argent Data Systems

We are currently expanding our product line to include innovative and low cost voice and data radios for hobbyists and professionals. Our main products are the OpenTracker+ and Tracker2 series of APRS and packet radio devices designed by Scott Miller, N1VG.


OpenTracker+ | Argent Data Systems

The tracker will also report telemetry from its onboard temperature and voltage sensors, and an external counter input can report a cumulative total of counter events or the number of events since last transmission. The OpenTracker+ is an APRS tracker that can also receive data from other stations and has waypoint output capability. Use the OT1+ to encode and transmit data from a supported weather station.


Other Products | Argent Data Systems

Other miscellaneous parts available in our store include the MX614 modem IC, the discontinued TCM3105 modem IC, the venerable LM3909 LED flasher IC, and other useful ICs, crystals, sensors, and more. We carry Garmin and Deluo GPS receivers with cables and adapters, as well as our private label SiRFstar III-based GPS receiver that integrates directly with our APRS trackers. Argent Data carries a variety of other products.