Description

Information and specifications page for the SR-170DU

Options and Accessories: Please scroll down to view related items.

SR-170DU UHF Repeater w/Duplexer 5 Watts 450-490 MHz

The Maxon SR-170 Series Repeaters are durable, reliable and designed to meet the needs of a variety of communications applications in the VHF or UHF range. Fully Assembled, Duplexer Installed and Tuned - Complete Custom Repeater Ready to Use , just add a suitable antenna and you're on the air.

The SR-170 Series Repeater utilizes the SD-170 Series Data Modules incorporating the most desirable features of the SD-170 in a low power, portable and reliable design. Adjustable transmit power settings provide the power needed on any job and the light weight and portability make it handy for remote or temporary locations. The SR-170 Series Repeaters can considerably extend the range of the portables in your system, making them ideal for use in places such as manufacturing plants, golf courses, parks, campgrounds and office buildings.
Whether implementing a new system or installing into an existing system, the Maxon family of Low Powered Repeaters has been the choice of users worldwide for over 25 years.

NOTE: MAXON SR-170 SERIES REPEATERS WITH DUPLEXERS REQUIRE MIN FREQUENCY SEPARATION OF 5 MHZ
INTERNAL DUPLEXERS ARE DESIGNED FOR AT LEAST A 5 MHZ INPUT - OUTPUT FREQUENCY SEPARATION.

Maxon's 3 year warranty and FCC, European Conformity and Industry Canada Certification logos certifies that the electromagnetic interference, safety, manufacture and other quality parameters have been met by the Maxon SR-170DU

Features:

Sold Out - OUT OF STOCK - NO LONGER AVAILABLE
Synthesized Frequency Tuning
1 or 5 Watts RF Output
142-174 MHz VHF SR-170V W/O Duplexer
142-174 MHzVHF SR-170DV with Duplexer
450-490 MHz UHF SR-170U W/O Duplexer
450-490 MHz UHF SR-170DU with Duplexer (Current Model listed on this page)

Programmable up to 16 Channels
Repeater programmed on one channel pair

16 Channels (Dip Switch Select)
(internal dip switch)

Programmable Wide/Narrow Band

Operates from 9V to 18 VDC
(Power Supply Included)

CTCSS/DCS Encode/Decode

LED Status Indicator
(Visible on internal Modules only)

DE-9/DB-9 Male Connector

12.5/25 kHz Channel Spacing

Busy Channel Lockout

BNC Female Antenna Connector
(on internal Modules only/SO-239s external)

Carrier Detect

2-Tone Decode

Die-Cast Aluminum Housing
(internal Modules only)

TX Time Out Timer

PC Programming via Software and Cable (optional)

Call for Assistance
Pay using PayPal: no PayPal account needed

Applications:
Factory and Building Maintenance Hotels and Resorts Golf Courses and Landscaping Camp Sites / Nature Areas Emergency / Disaster Local Comms Isolated Locations Auto Racing / Off-Road Racing Underground or Tunnel Operations

General Specifications
Parameter:	Maxon VHF SD-171EX	Maxon UHF SD-174EX
Frequency Range	142-174 MHz	450-490 MHz
Approvals	RXUSD-171E	RXUSD-174E
FCC Parts	Parts 22, 74, 90, 210
Channels	1 to16 internal dip switch selectable
Channel Spacing	12.5 / 25 KHz
Channel Stepping	2.5, 5 & 6.25 KHz
Channel Spread	32 MHz	40 MHz
Frequency Stability	±5.0 ppm	±2.5 ppm
Operating Temperature	-22° to +140° F (-30° to + 60° C)
Storage Temperature	-40° to +176° F (-40° to + 80° C)
Input Voltage	9V - 18V DC, 12V nominal
LED Status	Green - Receive or Decode / Red - Transmit / Yellow - Busy
Current Drain @12V	65 mA Rx / 1.0A Tx Low / 2.0A Tx Hi
Lock Time	<10ms
Operating Rating	35% @ Temp Range Listed
Dimensions [LWD]	4.6 x 2.4 x 1.4” (117x62x35 mm)
Weight	9.4 oz. (267 g.)
Materials	Die-cast Aluminum
IC Certification Number	153B-SD-171E	153B-SD-174E

Receiver Specifications
Parameter:	Maxon VHF SD-171EX	Maxon UHF SD-174EX
Frequency Stability	< ±5 PPM	< ±2.5 PPM
Sensitivity (12dB SINAD)	.30μV (12.5 kHz), 0.28μV (25 kHz)
Selectivity	65dB (12.5 kHz), 70dB (25 kHz)
Response Time	<16ms
Spurious Emissions	-57dB (9kHz-1GHz),-47dB (1GHz-4GHz)
Intermodulation	-70dB
Audio Output	0.5 Watt
RX Hum/Noise	-40dB (12.5 kHz), -40dB (25 kHz)
Squelch Attack Time	<20/40 ms (RSSI/Analog) <10/30ms (RSSI/Analog), ±20dB
Squelch Decay Time	5 ms Min., 20 ms Max
Spurious/Harmonic	65dB
Input Impedance	50 ohms

Transmitter Specifications
Parameter:	Maxon VHF SD-171EX	Maxon UHF SD-174EX
RF Power Output.	5/1 Watt Programmable
Frequency Deviation	±2.5, Min. ±1.9 kHz (12.5 kHz) / ±5.0, Min. ±3.8 kHz (25 kHz)
Modulation	11K0F3E / 16K0F3E
Spurious & Harmonics	-36dBm
FM Hum & Noise	40dB (12.5 kHz), 40dB (25 kHz)
Adj. Channel Power	70dB (25 kHz), 60dB (12.5 kHz)
Audio Response	+1, -3dB from 6dB per octave pre-emphasis and characteristic 300 ~ 3000 Hz
Modulation Sensitivity	100mV RMS (60% peak dev)

NOTE: Some features indicated by specifications listed are prohibited by FCC rule and are not available on models sold in the U.S. or its territories. Note: Features and specifications subject to change without notice.