SD-270 Series Data Radios

SD-271 V2 – 5/1W VHF (136-174 MHz)
SD-274 U3 – 5/1W UHF (450-490 MHZ)


  • 5/1 Watt Power Output
  • LED Status Indicator
  • 16 Channels (Dip Switch Select)
  • Modem Options (GMSK/4FSK)
  • Supports 19200 bps Data Rate
  • CTCSS/DCS Encode/Decode
  • DE-15 Pin Female Connector
  • 12.5/25 kHz Channel Spacing
  • External Software Channel Steering
  • 6 Programmable Squelch Levels
  • Variable Power Output
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SD-270 Series Data Radios

The Maxon SD-270 Series of radios are durable, reliable and designed to meet the needs for a variety of wireless applications. Include the optional GMSK (9600 Baud Rate) or the 4FSK (19200 Baud Rate) modem boards to add even more diversity to this cost effective radio.

The modules incorporate the most requested mechanical footprint and BNC antenna connection. Transmit power settings from one to five provide the power needed on any job and the LED indicator gives instant on-sight status of the radios operation. Combine that with low current drain and fast transmitter/receiver attack times for operation in the harshest of system demands. The die cast aluminum cabinet/lid provides resistance to RF interference; and gives exceptional environmental durability in the most extreme conditions.

Whether implementing a new system or installing into an existing system, the Maxon family of data telemetry radios have been the choice of OEM and end-users worldwide for over 35 years.


  • TB-150BN - VHF (148-174 MHz) 6" Antenna, BNC
  • TB-450BN - UHF (400-512 MHz) 6" Uncut Antenna, BNC
  • G8BI - Mag Mount Base, 12' coax, BNC Connector; Requires QW152 or QW450
  • G8BI20 - Mag Mount Base, 20' coax, BNC Connector; Requires QW152 or QW450
  • QW152 - 18" VHF Wave Antenna (NMO Type): Use with G8BI or G8BI20
  • QW450 - 6" UHF Wave Antenna (NMO Type): Use with G8BI or G8BI20
  • ACC-213 - GMSK 9600 Baud Modem
  • ACC-214 - FFSK19200 Baud Modem
  • ACC-HSNF - Aluminum Black Anodized Pin Style - Flat Mount
  • ACC-270/N - Programming Software
  • ACC-2016E - Programming Cable (USB)
  • ACC-2270 - RS232 Serial Interface/Alignment Board w/Cable


How to Buy

Our radios are for professional use and most require an FCC, IC (Canada), or CE Red (Europe) license to import and/or operate. Please contact us to find a local Maxon dealer: Call: (800) 456-2071 OR Email:

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