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 ManualAug-2020

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

TIMTER™ Transmitter DatasheetAug-2020

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

Receiver and Transmitter CatalogAug-2020

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 InterpretationJul-2020

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)Apr-2020

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

Quasonix Product Lines

6 thoughts on “TIMTER™ Transmitters”

  1. where I could find how I specify the dimensions because there is a a number to define dimensions but there is 2 others digits XX to complete define dimensions. Example 07XX. How I canspecify XX?

    • The package code and the pinout code are determined as an output of the quoting process. You first specify all the features you want, and the package code and pinout code are whatever they need to be to provide those features.

  2. Hello,

    It looks like that 15 position MDM wiring interface cable has the option to be pins or sockets, suggesting that the connector on the transmitter is configurable. What is the sex of the transmitter connector by default?

    • Units with TTL clock and data interfaces (only) use pin connectors. Units with RS-422 clock and data interfaces (whether RS-422 only or selectable between RS-422 and TTL) use socket connectors.

      Here is a list of available interfaces and their connectors:
      T – TTL (75 ohms to ground) – Pin (MDM-15 Male)
      H – TTL (10K ohms to ground) – Pin (MDM-15 Male)
      A – TTL selectable between 75 ohms to GND and 10k ohms to GND – Pin (MDM-15 Male)
      R – TIA/EIA-422 (RS-422) – 120 ohms differential – Socket (MDM-15 Female)
      B – TIA/EIA-422 (RS-422) – 120 ohms differential, even when unit powered off – Socket (MDM-15 Female)
      M – Dual mode selectable (TTL terminated 10k ohms to GND, RS-422 term 120 ohms diff.) – Socket (MDM-15 Female)
      D – Dual mode selectable (TTL terminated 75 ohms to GND, RS-422 term 120 ohms diff.) – Socket (MDM-15 Female)
      S – Tri-mode selectable (TTL term 75 ohms to GND, TTL term 10k ohms to GND, and RS-422 term 120 ohms differential) – Socket (MDM-15 Female)

  3. Hello, I am a reliability Engineer and I am looking for a parts list for the Transmitter. Can you provide me with the part list and electrical schematic displaying the parts associated with the Multi-Mode Telemetry Transmitter. If there is already a FMECA available for this component, please also provide that information. My Email can be found below.


    • All our transmitters are COTS products, and design details like parts lists and schematics are highly proprietary. We cannot provide those.
      If you have specific questions about the transmitter line, we should first start with a part number. We do have MTBF calculations for some models, and we could share those. Or we can quote doing a new analysis.


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