Two-Way Radio Communications and Electronics Specialists



 Vertex Standard Portable Two-Way Radio Selector Page Portables
 Vertex Standard Mobile Two-Way Radio Selector Page Mobiles
 Vertex Standard Repeater Selector Page Repeaters
 Vertex Standard System 600 and VX-1210 HF SSB Radios HF SSB
 Vertex Standard Product Line Photo and Links OptionAcc
 Vertex Standard Two-Way Radio Communications Product Line Photo Vertex
 Two-Way Radio Repair Page Repair
 Yeasu/Vertex Standard Antenna Rotators Rotators
 Vertex Standard VX-Trunk System VX-Trunk
 Vertex Standard Specials and New Products SPECIALS
 Vertex Standard Lowest Price Page LowPrice

 Midland Portable Two-Way Radio Selector Page Portables
 Midland Mobile Two-Way Radio Selector Page Mobiles
 Midland Repeater and Base Station Two-Way Radio Selector Page Base/Rptr

 Maxon Legacy Portable Two-Way Radio Selector Page - Topaz Portables
 Maxon Legacy Mobile Two-Way Radio Selector Page - Topaz Mobiles
 Maxon Repeater Selector Page - Topaz Repeaters
 Maxon Base Station Selector Page - Topaz Bases
 Maxon Legacy Midland RF Data Link Selector Page - Topaz Data
 Radio Selection and Applications Help Page for Maxon, Legacy ProLine, TrueTalk and Midland - Topaz3 Radio Help

 Austin Antenna Products and Information Austin
 Comtelco Two-Way Antenna Products Comtelco


 SCA, Inc. Shimwa  Sceptar UHF/VHF Tone Pager  Sceptar UV
 SCA, Inc. Shimwa  ALPS VHFL Low Band Tone Pager  ALPS VHFL
 Pager Repair Page Repair


 Police/Fire/EMS/Public Safety - Scanner Selector Uniden
 Scanner and Monitor Radio Antenna Information Antennas
 Scanner Repair Information Repair
 Scanner Frequency Selector Page - Scanner Frequencies ScanFreqs
 Scanner Frequency Links Page Links


 CB Radio Selector Page Uniden
 Ranger Communications CB & Amateur Radio Selector Page Wilson
 CB Radio Repair Page Repair
 CB Radio Tune Up / Alignment Page / Peak Tune-Up
 CB & Amateur Radio Antenna Selector Page Antennas
 CB Radio Accessories Selector Page Parts/Acc

 Wilson Antenna Selector Page Antennas
 Wilson Antenna Replacement Parts and Accessories Parts/Acc
 Francis CB antennas Selector Page Francis


 Multec Communications / - How to Order Page FAQs
 Multec Communications / - How to Order Page Ordering
 Multec Communications / Contact
 Multec Communications / - Friends & Members Links Page Links
 Multec Communications / - Table of Contents Contents
 Multec Communications / - Search Page SEARCH
 Multec Communications / - Misc and Used Page Misc/Used
 Multec Communications / - Terms and Conditions Returns
 Multec Communications / - Terms and Conditions TermsCond

Maxon Radio Logo by Topaz


Maxon Endura SM2500 series
VHF&UHF Mobile Radios

Maxon SM2541 and SM2544 Mobile Two-Way Radios

For Guaranteed Lowest Pricing...





Includes: Microphone, Bracket, Mounting
Hardware and 4 Ch FREE Programming

Lowest Price Guarantee
Visa, MasterCard, Discover and American Express Accepted
***Up to 4 Channels Programmed FREE***

Add versatility to the SM2500 Series mobiles with these options: Base Station and High Power Amplifiers. All items are listed and priced in accessory section below


Maxon SB2500 Base Station for SM2500 Series Radios
Click for Info

  Uses one SM2500 Series radio / up to 25 W power
10 Amp power supply, 110V or 220V operation
Base station desktop microphone
  Optional assembly and programming

Lowest Price Guarantee

Maxon's Enduro SM2500 Series Mobiles are favored for their economical and compact size.. These data-ready mobiles are are the perfect size to mount into plumbing, welding, automotive and catering trucks, vans or vehicles. The SM2500 mobiles are designed to durable military standards and tough-tested for dependable performance.


  • 25 Watt RF power:
    Programmable for 1 or 25 Watts by channel, for optimum communication range from any location.
  • 4 Channels:
    Rotary switch selectable for ease and simplicity
  • 148-174 VHF SM2541
    440-470 UHF SM2544
  • CTCSS / DCS Tone signaling:
    Tones prevent reception of unwanted calls and increase call privacy.
  • Data connector:
    Provides easy access for audio and data applications such as mobile data terminals, telemetry and SCADA applications.
  • Easy programming:
    For convenience, radio personality is programmed through the microphone jack.
  • Multiple scan modes:
    Channel scan, priority scan and priority scan with look back function.
  • Compact Size (7" x 2" x 6.25")
  • CTCSS/DCS Encode/Decode
  • Programmable Wide/Narrow per Ch
  • 15-Pin Data Connector
  • Talk-Around Mode / Monitor Mode
  • Time-out-timer
  • Busy Channel Lockout
  • 12.5/25 KHz Channel Spacing
  • 2.5/5.0/6.25 KHz Channel Stepping
  • 15-Pin Data Connector
    (See image below)
  • Wideband Synthesized
  • Meets MIL-STD 810 F, Shock, Vibration, and Dust
  • External speaker jack
  • Time-Out Timer
  • Loud 4 Watt Internal and External Speaker Power
  • Direct FM Modulation
  • PC Programming via Software and Cable (optional)

Got a Question?

HIGH POWER AMPLIFIERS: Maxon Power Amplifier for SM2500 Series Radios

  VHF - up to 140 Watts
  UHF -
up to 100 Watts
Includes 22-ft cable and connection hardware
 Maxon SM2500 Series Mobile Radios - UHF/VHF
Model # Description Price

 SM2544  25 Watt UHF Band 440-470 MHz  4 Channel 
 Optional Accessories - Microphones         Lowest Price Guarantee
Model # Description Price

 ACC-4473  Heavy Duty Mobile Microphone 
 ACC-702  Base Station Desktop Microphone
 ACC-709  Heavy Duty DTMF Mobile Microphone
 Optional Accessories - Speakers                 Lowest Price Guarantee
Model # Description Price

 AA-1470A  10 Watt Heavy Duty Remote Speaker

 Optional Accessories - Signalling               Lowest Price Guarantee
Model # Description Price

 ANI-MA Maxon  Analog - DTMF / Five-Tone / 2-Tone ANI Encoder
 ANI-MG Maxon  Digital - GE Star ANI Encoder
 ANI-MM Maxon  Digital - MDC-1200 / MDC-600 ANI Encoder
 TVS-2 Maxon  Rolling Code Voice Scrambler
 UD-1B Maxon  DTMF / Five-Tone (Selcall) / 2-Tone Decoder w/ANI
 VPU-11 Maxon  Speech Inversion Scrambler (default frequency 3676 Hz)
  (Factory programmable between 2000-4069 Hz - extra charge)
 VPU-15 Maxon  Speech Inversion Scrambler (user programmable)
 Optional Accessories - Power Supplies     Lowest Price Guarantee
Model # Description Price

 MS-0730A  Power Supply 10A 110/220 VAC  50% Duty Cycle
  Note: DuraComm equivalent may be substituted
 MS-4730  Base Station Housing / Shroud
 Optional Accessories - Base Station Kit    Lowest Price Guarantee
Model # Description Price

 SBK-2500  Base Station Kit - (requires assembly) Includes:
   Housing / Shroud 10 Amp Power Supply
Base Station Desktop Microphone (ACC-702)
  NOTE:  Requires 1 -  SM2500 Series radio
 Optional Accessories - Power Amp Kits    Lowest Price Guarantee
Model # Description Price

 HPK-VHF  VHF Power Amplifier Kit for SM2541 Includes:
   Up to 140 Watts of  OUTPUT POWER
   Power Amplifier Cables with Connectors (22 ft) Hardware
  NOTE:  Requires 1 -  SM2500 mobile radio
 HPK-UHF  UHF Power Amplifier Kit for SM2544 Includes:
   Up to 110 Watts of  OUTPUT POWER
   Power Amplifier Cables with Connectors (22 ft) Hardware
  NOTE:  Requires 1 -  SM2500 mobile radio
 HP-22  Amplifier Cable Kit with Connectors (22 ft) 
 Service Equipment                                       Lowest Price Guarantee
Model # Description Price

 ACC-925CD  PC Radio Programming Software (Win95 & up)
 ACC-2500  PC Programming Cable  WARNING!
 KPL-3  PC Module Programming Software & Cable
 (Win95 & up) for all signaling modules listed, except
 680-100-2012  SM2541 / SM2544 Service Manual

Maxon Endura SM2541 and SM2544 Accessories
(pictures are similar)

Maxon Endura SM2541 and SM2544 Mobile Radiio Accessories

General Specifications      Maxon Endura - SM2541 / SM2544
  VHF Band SM2541 UHF Band SM2544
Frequency Range 148-174 MHz 440-470 MHz
Channels 4
Channel Spacing 12.5 / 25 KHz 12.5 / 25  KHz
Channel Stepping

2.5 / 5.0 / 6.25 KHz

2.5 / 5.0 / 6.25 KHz

Channel Spread 26 MHz 30 MHz
Antenna Impedance

50 Ohms

Input Voltage 13.8 VDC 20%
Current Drain

< 100 mA Standby / < 150 mA Receive / < 8.0A Transmit

Operating Temperature -22 F to 140F   /  -30 to +60 C
Frequency Stability

5 ppm  (-30 to +60 C)


7" x 2" x 6.25"  (178 x 44 x 152 mm)


3 lbs, 6 oz. (1500 gm)

FCC Identifier



FCC Compliance

Parts 20, 22, 74, 90, 90.210

Parts 22, 74, 90, 90.210, 95

IC Certification No.



ANSI/EIA/TIA-603 Receiver Specifications
  VHF Band SM2541 UHF Band SM2544
Sensitivity (12dB SINAD) 0.25 uV @ 12.5 KHz / 0.25 uV @ 25 KHz
Selectivity 60 dB @ 12.5 KHz / 70 dB @ 25 KHz
Intermodulation 70 dB @ 12.5 KHz / 70 dB @ 25 KHz
Spurious Response

70 dB

Audio Output 4W (int.) 8 Ohm   /   4W (Ext.) @ 8 Ohm     < 10% THD
ANSI/EIA/TIA-603 Transmitter Specifications
  VHF Band SM2541 UHF Band SM2544
RF Power Output.

1 or 25 Watts (prog. by channel)

Frequency Stability 0.000025 PPM (-30 to +60C)
Modulation 11K0F3E  2.5KHz max  /  16K0F3E  5KHz max
Spurious & Harmonics -70 dB
FM Hum & Noise

40 dB @ 12.5 KHz / 40 dB @ 25 KHz

Audio Distortion Per EIA / TIA-603 Spec
  (@60% deviation) < 5% @ 1 kHz
Output Impedance 50 ohms

SM2541 / SM2544 Data Connector pin-outs

Maxon Endura SM2541 SM2544 Data Connector pin-out

Topaz logo covering Maxon and Legacy products
Topaz technology, today, tomorrow. The Maxon and Legacy brand products in this document portray our experience and dedication to the communications industry. With continued growth and new product offerings, we are ready to meet the challenges of tomorrow.
Your assurance of quality. We are very proud of our product quality and stand behind every product we sell with these three Quality Assurance Promises:
  • 2 Year Parts and Labor Warranty
  • 6 Month Replacement Program Quality
  • Parts Performance Guarantee

From manufacture, our radio products are certified to strict ISO 9002 quality standards by one or both of these internationally known agencies.

Note: Features and specifications subject to change without notice

Solution Graphics

Visa, MasterCard, Discover and American Express Accepted

Our e-commerce system uses a XRamp
SSL Secure Site protected through

Terms & Conditions
Table of Contents

Copyright 2000-2015  Multec Communications / - All rights reserved. Do not duplicate without the express written consent of Multec Communications.
Shipping & Mail only - Note: returns require a RA# - see RETURNS  before shipping
Address...                      Note: warranty repairs only - see REPAIRS  before shipping

Multec Communications
319 Centre Ave.  #166
Rockland, MA  U.S.A.   02370-2613
781 294-4992 main
781 527-5004 fax (include return email w/fax)

Main 781 294-4992
- calling hours 11-5 EST  Monday-Friday for questions and tech support only...."Out of Area", "Restricted" and "Private Caller" calls may be blocked to avoid phone spam. Note: The main line is often very busy. Please place orders online using our secure e-commerce system. Save time...order online!

If you have questions about ordering please see  ordering information page  first. Phone orders slow processing time, increase inaccuracies and are not recommended.

Email questions or comments at - Email

Note: Not responsible for typographical, photographic or pricing errors.
         All pricing and specifications subject to change without notice.