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Features/Benefits:
• All electronic tuning (no mechanical adjustments)
• Same mechanical footprint and electrical
interface as the current DTX-Ls
(allows drop-in backwards compatibility)
• Available in 2 to 8 Watt UHF Models and
2 to 5 Watt VHF
• Supports voice or data applications
• Supports sub-audible signaling CTCSS or
Digital Coded Squelch
• PC programmable via a Windows-based
PC programmer
• All components placed on the top side of
a single PCB for mechanical rigidity and
increased protection against damage
• Solid internal ground plane for enhanced
EMI shielding
• Surface acoustic wave (SAW) filter front-end
for no-drift, adjustment-free filtering of
interfering signals (DTX-445)
• Monolithic Gilbert cell mixer with internal
negative feedback for improved RF
intermodulation performance
• Ritron exclusive flex-divider PLL
synthesizer allows for a wide loop
bandwidth for fast transmit and receive
attack times and minimal microphonics
• Audiophile-grade polypropylene capacitors
in the PLL loop filter for further reduced
microphonic susceptibility
New – Next Generation
DTX-Ls Series Transceiver
A new embedded RF platform with enhanced performance and reliability.
- Narrow Band Compliant
- Ideal For OEM and Other Integrated Applications
DTX-445 and DTX-145
Plus These Established DTX Ls Features:
• Low standby current drain facilitates long
battery life in battery powered applications
• High receiver sensitivity
• Single board design for high reliability
• Ritron’s made in the USA design,
manufacturing, and service expertise
• FCC Narrow Band Compliant and
Industry Canada approved module
(board only or with enclosure), allows for
easier integration into OEM applications
without regulatory concerns
• Various connector/module options allow for
flexibility in OEM integration
FCC Certified RF Transceivers
(with enclosure or as board only)
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Reliable and Feature Rich.
RF Transceivers, Radio Modems and Specialized Wireless Communication Equipment
for OEM and Integrator Applications – Since 1977.
GENERAL SPECIFICATIONS
FCC ID: AIERIT17-445 AIERIT17-145
Industry Canada ID: 1084A-RIT17445 1084A-RIT17145
FCC Rule Parts: 90
Industry Canada Rule Parts: RSS-119
Frequency Range: 400.6 – 416.5
RF Channels: 8 Independent TX/RX frequencies
Synthesizer Step: 6.25kHz 2.5kHz
Channel Spacing: 12.5kHz
Frequencies unusable: TBD
Frequency Stability: +/-1.5 PPM (-30° to +60° C) +/-2.5 PPM (-30° to +60° C)
Tone/Code Signaling: CTCSS (Quiet Call) and DCS
Power Supply: 9 to 17 VDC
Dimensions & weight: Board only version: 4.75” x 2.8”x .625” / 2.1 oz
Encased version: 5.7”x 3”x 1.375” / 7.3 oz.
Antenna Fitting: BNC female with encased version. Other options available on board only version.
†
pending model
RECEIVER 25 kHz Wide band 12.5 kHz Narrow band 25 kHz Wide band 12.5 kHz Narrow band
Sensitivity (12 dB SINAD): 0.25 µV 0.25 µV .25uV .25uV
Adjacent channel: -67 dB -60 dB -67dB -60dB
Spurious rejection: -70 dB -70 dB -65dB -65dB
Image rejection: -75 dB -75 dB -70dB -70dB
Intermodulation: -67 dB -67 dB -67dB -67dB
FM hum and noise: -43 dB -37 dB -43dB -37dB
Conducted spurious: -57 dBm -57 dBm -57dB -57dB
Receiver attack time
Noise squelch attack time: < 15 ms < 15 ms < 15 ms < 15 ms
(for 20 dB quieting)
RSSI squelch attack time: < 5 ms < 5 ms < 5 ms < 5 ms
RSSI squelch sensitivity: PC adjustable; factory set for –106 dBm
Noise squelch sensitivity: PC adjustable; factory set for –121 dBm
AUX OUT frequency response: 12 - 2500 Hz @ +1 / -3 dB
AUX OUT level range: 0 to 3 Volts peak-to-peak
Audio Speaker Output: >700 mW into 8 Ω, with less than 5 % THD ( 0 to 2.5 Vrms)
Audio Speaker freq response: de-emphasized 6 dB/octave from 400 to 2500 Hz
Current Drain: Receive Standby: 25 mA at 12.5 VDC
(TX to RX): < 10 ms < 10 ms < 10 ms < 10 ms
UHF DTX-445 VHF DTX-145
†
, 411 – 429†, or 450 - 470 MHz 136 to 162 MHz, 148-174MHz
SINGLE BOARD TRANSCEIVER WITH
HOUSING & MOUNTING FLANGES
SINGLE BOARD TRANSCIEVER
(Board Only)
TRANSMITTER
Voice Emission Designator: 15K0F3E 10K0F3E 15K0F3E 10K0F3E
RF Power Output: 2.0 Watts @ 12.5 VDC < .9 A 2.0 Watts @ 12.5 VDC < .9 A
8.0 Watts @ 12.5 VDC < 1.8 A 5.0 Watts @ 12.5VDC < .9 A
10.0 Watts @ 14 VDC < 1.8 A
Transmitter Duty Cycle: With supply below 13.5 volts:
8 W board only model - 100 % with added heat sink** maintained at 25° C
8 W encased model - 33 % with case end cap*** maintained at 25° C
5 W encased model - 50 % with case end cap*** maintained at 25° C
(with heat sink or case end cap above 25° C, degrades linearly to 0% at 60° C)
†
pending model
** a heatsink can be added to the board only versions using the two holes next to the RF PA shield.
*** case end cap refers to aluminum extrusion end cap on opposite side from connectors.
Data Emissions Designator for external modem: 9K8F1D
Deviation: +/- 5.00 kHz +/- 2.50 kHz +/- 5.00 kHz +/- 2.50 kHz
Transmitter attack time: < 10 ms
FM Hum and Noise: -45 dB -40 dB -45 dB -40 dB
Audio Distortion: < 5 %
Spurious and Harmonics: -25 dBm max -20 dBm max
Aux In frequency response: 8 Hz to 2500 Hz @ +1 / -3 dB
Aux In level range: 0.1 to 5 V peak-to-peak
Microphone freq response: pre-emphasized 6 dB/octave from 300 to 2500 Hz
Microphone level: 25 mV rms for nominal +/- 3 kHz deviation on wideband channel
Current Drain: 2.0 Watts @ 12.5 VDC < .9 A 2.0 Watts @ 12.5 VDC < .9 A
8.0 Watts @ 12.5 VDC < 1.8 A 5.0 Watts @ 12.5VDC < 1.2 A
10.0 Watts @ 14 VDC < 1.8 A
P.O.Box 1998, Carmel, IN 46032 • PH: 317.846.1201 • FX: 317.846.4978 • email: sales_info@ritron.com • www.ritron.com
©2010 Ritron, Inc. All rights reserved. Ritron, Jobcom, Patriot, OutPost, GateGuard, Radio Nexus, Quiet Call and QuickAssist are registered trademarks of Ritron, Inc. Quick Talk, Liberty, and LoudMouth are trademarks of Ritron, Inc. 9/10
SUB D 15-PIN CONNECTOR
The DTX-445-145 is equipped with a 15-pin
sub D connector with the following functions:
Pin # Name Description
1 CS0 Channel Select low bit
2 CS1 Channel Select mid bit
3 CS2Channel Select high bit
4 MIC IN Microphone Input
5 H/L PWR High/Low Power
6 SUPPLY Power Supply Input
7 AUX IN Auxiliary Input
8 AUX OUT Auxiliary Output
9 PGN IN/OUT Programming I/O
10 N/A Not Used
11 RX MON Monitor
12 Audio Out Audio PA Output
13 DCD Carrier Detect
14 PTT Push-to-Talk
15 GND Ground
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