RDMS™ Compact Receivers

Airborne Accuracy

Quasonix’s multi-mode compact RDMS™ telemetry receiver features an extremely sensitive RF downconverter integrated with the company’s market-leading ARTM demodulator and bit synchronization in a compact 12 cubic inch flight-ready package. When compared to the competition, RDMS™ offers a remarkable 6 to 8 dB sensitivity advantage. What you choose to do with the extra link margin is up to you.

Key Features

Complete Receiver – RF to Bits A single-box solution that accepts RF signals, and delivers baseband clock and data. No external add-ons required.
Flight-ready package Compact 12 in.³ (4.00″ x 3.00″ x 1.00″) enclosure.
True Trellis Demodulation in all ARTM Modes Provides true trellis detection in all three ARTM modes for optimal demodulation.
Lower L, upper L, full S, C, or multiple bands available
Lowest noise figure 3.5 dB noise figure bests all other ARTM receivers on the market, hands down.

Product Datasheets and Catalogs

Type	Title	Updated	Description	Version	Keywords
	RDMS™ Compact Receiver Datasheet (Gen 3)	Oct-2023	Features, specifications, options, and possible band configurations for Quasonix’s third-generation compact (airborne) RDMS™ telemetry receiver.		Adaptive AGC analog ARTM axes BER Bits bps COMPACT data dB dBm demodulator Detection Eb FM Frequency Hz IF II Input kbps kHz legacy Male Mbps MDM MHz ms N0 Noise Operating option out output PCM Performance Phase QPSK RDMS RECEIVER required RF Section SOQPSK-TG steps Synchronization Telemetry temperature Tier time trellis TTL VDC
	Receiver and Transmitter Catalog	Nov-2022	Catalog of products including Rackmount and Compact RDMS™ Receivers; TIMTER™, nanoTX™, and nanoPuck™ Transmitters; transmitter accessories and heat sinks; Ethernet Via Telemetry (EVTM); and the Receiver Analyzer.		1U 3U 5-band acquisition adaptive add-ons amplifier Analyzer application-specific ARTM automates better bigger bit break brother channels Check Coded combination combiner combining compact competition complete Configurations contiguous contiguously coverage covering CPM dB dBm decoding delivering demodulator Density diminutive display diversity efficient elegant encoded equalizer error exceptional extremely features finest flexibility flight-ready FM frequency Generation generators GHz highest include including index integrated Introducing levels Low Lower market matter MHz modes modulation mount multi-band Multi-h multi-mode nanoTX new noise offers optional package Parity PCM performance performing power rack Rack-Mount range rate rd RDMS Receiver sensitivity signal signals single size smallest SOQPSK SOQPSK-TG Space spectrum synchroniza synchronizer tailoring Telemetry testers tests third threshold Time TIMTER touchscreen Transmitter tuning ultimate unit Upper value watts wide

Product Demonstrations

Type	Thumbnail	Title	Length	Description	Video

Available Options

Powerful adaptive equalizer mitigates multipath distortion
Optional contiguous tuning from 200 MHz through 2500 MHz and 4400 MHz through 5250 MHz
Low Density Parity Check coding, included in all receivers with SOQPSK demodulation, operates with Quasonix LDPC-enabled transmitters to improve link margin by up to 9 dB, while still using 22% less bandwidth than PCM/FM at the same payload data rate
Extended temperature range (-40°C to +85°C)
Viterbi decoder (k=7, R=1/2), Tier 0, Legacy
SAW IF filters (14)
Wide voltage (15-35 VDC)
Ethernet payload, used for Ethernet Via Telemetry (EVTM)

Option Datasheets and Guides

Title	Updated	Description	Keywords
Receiver and Transmitter Space-Time Coding Datasheet	Nov-2022	The Quasonix Space Time Coding Solution eliminates link outages caused by the “two-antenna problem,” improving behavior of received signal power and overall link availability.	106-17 2-E Adopted Advantages Aeronautical AFB Air aircraft antenna Antennas applications authors availability bandwidth behavior Bit Brigham cancel caused Center Coded CODING Commander’s Compatible Complete Conference configuration Council creating data Dual Edwards Eliminates Errors expansion Experimental flight Force Ground IF II Illustrations Improves installations interference International IRIG Kip link LOS Lower maneuvers Michael minimal nulls NV originally outages Output Part path Pattern permission power problem Proceedings published Quasonix Radiation Range RDMS receive received Receiver Receivers required Results Rice signal Signals SNR software SOLUTION SOQPSK SPACE Space-Time spectrum standard station STC SYSTEM Telemetering Telemetry Temple test TIME transmit Transmitter two-antenna University upgrade Upper USA
Receiver and Transmitter Low-Density Parity Check Datasheet	Oct-2023	The Low Density Parity Check (LDPC) Forward Error Correction mode improves link margin equivalent to nearly tripling the operating distance on your telemetry link.	bandwidth bit bits block channel CHECK code coding conditions CORRECTION crypto data dB Decoding DENSITY devices Eb ERROR even fading FM Forward fully gain LDPC less Link LOW maintain Margin N0 nearly Operation PARITY payload PCM performance Quasonix rate rates receiver receivers sizes subsystem Synchronization SYSTEM telemetry Transmitter
RDMS™ Receiver Adaptive Equalizer Datasheet	Nov-2022	Describes Quasonix’s telemetry receivers’ Adaptive Equalizer Mode, which combats multipath fading.	ADAPTIVE ARTM BPSK Channels cleaner combats CPM decision-directed Digital DPM EQUALIZER existing Fading feedback FM harsh Improves LDPC MODE modes Multi-h Multipath NEW operation Option OQPSK PCM Processing programming QPSK Quasonix RDMS Receiver RECEIVERS Reception results Signal SOQPSK SOQPSK-TG TELEMETRY Tier transmitter upgrade Uses

Option Demonstrations

Type	Thumbnail	Title	Length	Description	Video
		RDMS™ Adaptive Equalizer Demonstration – SOQPSK	1:33	Brief demonstration of how our RDMS™ Adaptive Equalizer can conquer multipath, transforming an SOQPSK signal with severe three-ray multipath distortion into nearly perfect data.	Option demonstration
		RDMS™ Adaptive Equalizer Demonstration – PCMFM	2:03	Brief demonstration of how our RDMS™ Adaptive Equalizer can conquer multipath, transforming a PCMFM signal with severe three-ray multipath distortion into nearly perfect data.	Option demonstration

Supporting Items

Image	Item	Description
	Airborne Receiver Heat Sink	Heat sink for 3″ x 4″ compact (airborne) receiver. Does not require a power source. Part Number: QSX-AC-RXHS
	MDM-15 RS-422 and TTL Wiring Harness for RDMS™	Male 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-RDMS

Accessory Datasheets

Type	Title	Updated	Description	Version	Keywords

User Manuals and Guides

Title	Updated	Description	Version	Keywords
RDMS™ Receiver Scripting Guide	Jan-2023	Technical guide for understanding, creating, and editing scripts for Quasonix RDMS™ receivers.	1.0	boot command execute modes operation recording script scripting
RDMS™ Receiver Telnet and Serial Control Protocol Guide	Dec-2022	Instructions for accessing and using Quasonix RDMS™ receivers’ serial control interface, including commands and syntax, for debugging purposes. The Telnet interface should only be accessed by advanced users. Contact Quasonix customer support before using these options.	1.0.5	AGC channel command commands configuration enable menu mode modulation parameters protocol receiver serial control interface set Telnet terminal
RDMS™ Receiver Bit Error Rate Testing Guide	Apr-2022	Instructions and commands for bit error rate testing on Quasonix RDMS™ receivers, plus guidance on using test noise (AWGN) commands.	1.0.1	AWGN BER BERT Bit Commands Error limit Measurement Noise Test
Receiver and Transmitter Low-Density Parity Check Guide	Sep-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.	1.0	Advanced Analyzer ARTM Availability Bandwidth Bench Channel Check Command Commands Compact Configuration Controls Density Dual LDPC List Menu Mode Modulator Mount Parity Quasonix Rack Receiver Receivers RF Screen Single SOQPSK STC Tier Transmitter User
Phase Noise Compensation Training	Jun-2015	Presents the theory of using the phase tree for data detection to improve bit error rate (BER), how to recognize phase noise, and when to use Phase Noise Correction (PNC).		adjacent algorithms analog assumption BER bit bits Compensation Confidential Cycles data dB decisions demod Demodulation Detection FM following Frequency gain help helpful Improves known L3 Legacy low Microwave Never Noise nominal path performance Phase PNC Proprietary Quasonix rates Reinventing several signal SNR symbols Symptoms Telemetry Time Trajectory transmitter transmitters tree Trellis true Turn TX Vibration worse
RDMS™ Compact Receiver Manual (Gen 3)	Dec-2022	Operating instructions for Quasonix’s third-generation compact RDMS™ telemetry receiver.	1.2.18	AGC AM Assignments Automatic Band Bit Clock Command Commands Compact Compensation Control CPM Data Digital Error Factory Filter FM Frequency Gain Generation IF Instructions List Low MHz Modulation Module Multi-h Noise Option Optional Options Output Parameter Parameters PCM Phase Pin Quasonix Rate rd RDMS RDMSTM Receiver Recommended Reset Responses SAW Serial Settings Specifications Speed Status Telemetry Tier Trellis Values Zero

Software Downloads

Type	Title	Version	Download	Description	Updated
	Receiver and Transmitter Terminal Software	1.9b	<1 MB	A simple serial port (COM) terminal emulation program used for serial communication with Quasonix products.	Jun-2015