TIMTER™ Transmitters

Quasonix TIMTER™ transmitter

Third-Generation Workhorse

Quasonix digital multi-mode telemetry transmitters are the benchmark of the industry, providing unparalleled performance and value, in small, robust, power-efficient packages. The TIMTER™ transmitter, now in its third generation and smaller than ever at 4.1 cubic inches, offers the most versatility of any transmitter in the industry, with advanced capabilities like L/S/C frequency tuning and output power up to 25 Watts.

ARTM Modulations

Quasonix transmitters offer three different modulations of increasing spectral efficiency – PCM/FM, SOQPSK-TG, and Multi-h CPM – also known as ARTM Tiers 0, I, and II, at standard bit rates from 0.1 to 28 Mbps (0.05 to 14 Mbps for PCM/FM).  Options (HR/LR) are available to extend the upper limit to a maximum of 46 Mbps (23 Mbps for PCM/FM) and the lower limit to a minimum of 50 kbps (25 kbps for PCM/FM). With bandwidth at a growing premium in flight test telemetry, you can take advantage of 2 to 2.5 times the data capacity of the legacy PCM/FM waveform with SOQPSK-TG and Multi-h CPM.

Product Configurations

RF Output Power

  • 10 mW, 1 W, 5 W, 10 W, or 20 W
  • S band also available in 25 W

Frequency Band

  • Lower L band (1435.5 MHz – 1534.5 MHz)
  • Upper L band (1750.0 MHz – 1855.0 MHz)
  • S band (2200.5 MHz – 2394.5 MHz)
  • L/S band
  • C band (4400.0 MHz – 4940.0 MHz)
  • C band with “mid” option (C + 5091.0 MHz – 5150.0 MHz)
  • L/C band
  • S/C band
  • L/S/C band

Baseband Interface

  • TTL or TIA/RS-422 (RS-422)

Other Highlights

  • Outputs from 10 mW to 25 W and optional variable power – all while drawing less current than the competition
  • Supports migration to 4400-4950 MHz and 5091-5150 MHz bands at 5 W or 10 W
  • Automatic Data Rate Tracking
  • As long as the external clock remains within specified data rates, the transmitter will automatically adjust to it with no programming or configuration required
  • Bypassable Randomizer
  • Standard IRIG-106 fifteen-stage randomizer, for applications with non-encrypted data
  • Straightforward configuration and control and platform-independence with serial terminal programming

Related Literature


TIMTER™ Transmitter ManualOct-2019

Installation and operation of Quasonix’s TIMTER™ Multi-mode Digital Telemetry Transmitters.

TIMTER™ Transmitter DatasheetOct-2019

Features, options, specifications, and select accessories for Quasonix’s range of multi-mode telemetry transmitters, including nanoTX™ and nanoPuck™.

Receiver and Transmitter CatalogOct-2019

Catalog of products including Rackmount and Compact RDMS™ Telemetry Receiver, nanoTX™ Telemetry Transmitter, TIMTER™ Telemetry Transmitter, and the Rack-Mount Receiver Analyzer.

Available on Most Transmitters 

  • Low Density Parity Check (LDPC) Error Correction System
  • Multiple hardware-selected presets (2, 4, 8, or 16)
  • Wide input voltage range
  • Clock generator output to baseband connector
  • Randomizer output to baseband connector
  • Dual power (two settings, “high” and “low”)
  • Variable power (32 discrete power level settings, spanning 24 dB)
  • Clock-free baseband interface
  • High bit rate option increases maximum bit rate to 46 Mbps (23 Mbps for Tier 0)
  • Low bit rate option decreases minimum bit rate to 50 kbps (25 kbps for Tier 0)
  • Parallel port frequency programming
  • Parallel port mode selection
  • Automatic carrier wave output

Related Literature


Receiver and Transmitter Low-Density Parity Check GuideSep-2019

This technical guide introduces Low-Density Parity Check (LDPC) encoding, its uses and benefits, the Quasonix products it is available for, and considerations for optimal set-up and use.

Receiver and Transmitter Low-Density Parity Check DatasheetOct-2019

The Low Density Parity Check (LDPC) Forward Error Correction mode improves link margin equivalent to nearly tripling the operating distance on your telemetry link.

IRIG 106-13, Appendix N InterpretationApr-2019

Explains Quasonix’s standard transmitter protocol and how transmitters with the C7 option (IRIG 106-07 control protocol) will behave differently.


Supporting Items

Quasonix TIMTER™ transmitter adapter plate for a 2" x 3" transmitter onto a 2.5" x 3.5" footprint
Adapter Plate for 2.5″ x 3.5″ FootprintThis adapter plate allows for the standard 2” x 3” TIMTER™ to be mounted to the larger 2.5” x 3.5” mounting surface occupied by other industry transmitters. Part Number: QSX-AP96
Quasonix TIMTER™ transmitter heat sink thermal pad
Heat Sink Thermal Pad2″ x 3″ Thermal Pad, Bergquist QPAD II, 0.006″/0.152mm thick, for use with heat sinks. Part Number: QSX-AC-TXTP
Quasonix TIMTER™ transmitter MDM-15 RS-422 and TTL wiring harness
MDM-15 RS-422 and TTL Wiring HarnessFemale MDM-15 connector wiring harness with banana plugs for power and ground, BNC connectors for both RS-422 and TTL clock and data, and a DB-9 connector for serial control. Part Number: QSX-AC-MDM15-HARNESS-PIN-VR
Quasonix TIMTER™ transmitter MDM-15 RS-422 connector with pigtails
MDM-15 RS-422 Connector with PigtailsFemale MDM-15 connector with 36-inch pigtails. For RS-422 clock and data. Part Number: QSX-AC-MDM15-36-PIN
Quasonix TIMTER™ transmitter MDM-15 RS-422 wiring harness
MDM-15 RS-422 Wiring HarnessFemale MDM-15 connector wiring harness with banana plugs for power and ground, BNC connectors for RS-422 clock and data, and a DB-9 connector for serial control. Part Number: QSX-AC-MDM15-HARNESS-PIN
Quasonix TIMTER™ transmitter MDM-15 TTL connector with pigtails
MDM-15 TTL Connector with PigtailsMale MDM-15 connector with 36-inch pigtails. For TTL clock and data. Part Number: QSX-AC-MDM15-36-SOCK
Quasonix TIMTER™ transmitter MDM-15 TTL wiring harness
MDM-15 TTL Wiring HarnessMale MDM-15 connector wiring harness with banana plugs for power and ground, BNC connectors for TTL clock and data, and a DB-9 connector for serial control. Part Number: QSX-AC-MDM15-HARNESS-SOCK
Quasonix MDM-9 female to MDM-9 male harness
MDM-9 Female to MDM-9 Male HarnessMDM-9 Female to MDM-9 Male Harness, 18 inches. Part Number: QSX-AC-MDM9MF-HARNESS
Quasonix transmitter handheld programmer
Ruggedized Handheld ProgrammerThe easiest way to remotely control transmitters and receivers without a bulky computer or monitor. Part Number: QSX-AC-HHPROG-1050-B
Quasonix TIMTER™ transmitter AC-powered heat sink
Transmitter AC-Powered Heat SinkFan-cooled, AC-powered heat sink for transmitters. Used for testing at the bench; not airborne approved. Part Number: QSX-AC-32-HS-12V (formerly QSX-TIMTER-HS-12V).
Quasonix TIMTER™ transmitter digital frequency and mode switchbox
Transmitter Digital Frequency and Mode SwitchboxTransmitter digital frequency and mode switch box with MDM-9 connector allows configuration without the use of a computer. Part Number: QSX-AC-DSWBX
Quasonix TIMTER™ transmitter-powered heat sink, cable, SMA extender, and base plate
Transmitter-Powered Heat SinkFan-cooled heat sink for 2″ x 3″ transmitters for airborne applications. Operates from 21 VDC to 34 VDC, powered from existing transmitter wiring. Part Number: QSX-AC-HS-28V-SP
Quasonix TIMTER™ transmitter-powered heat sink wiring harness
Transmitter-Powered Heat Sink Wiring HarnessExternal wiring harness for fan-cooled heat sink for 2″ x 3″ transmitters. For airborne applications. Part Number: QSX-AC-HARNESS-HEATSINK-TX
Quasonix USB-to-serial converter cable
USB to Serial Converter CableAllows for transmitter configuration using a computer that has a USB port but no serial ports. Part Number: QSX-AC-USBSER-CONV

Related Literature


Transmitter Handheld Programmer DatasheetOct-2019

Features of the ruggedized programmer, which is the easiest way to remotely control transmitters without a bulky computer or monitor.

Transmitter Heat Sinks DatasheetOct-2018

Quasonix offers different types of integrated and add-on heat sinks, as described in this datasheet. Please contact Quasonix for heat sink recommendations for your particular TIMTER™ transmitter.

Transmitter Handheld Programmer Manual (Gen 2)Aug-2019

Operation of the 2nd Generation Quasonix Ruggedized Handheld Programmer, which is designed to facilitate setting up transmitters for operation.

Transmitter Switchbox Manual (Gen 2)Aug-2019

How to set up and use the second-generation digital frequency and mode switchbox, released in 2018, for TIMTER™ transmitters.

Quasonix Product Lines

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