Please enable / Bitte aktiviere JavaScript!
Veuillez desactiver vos / Por favor desactiva el Javascript![ ? ]
Motorola Radius M110 Modification | Radioaficion Ham Radio

Motorola Radius M110 Modification

Share

http://lea.hamradio.si/~s57nan/ham_radio/m11_mod.jpgModification of a professional 2m VHF FM PMR transceiver Motorola Radius M110 into an amateur radio is a result of a common work of Beno S56KZN and Aleks S56AL.The PMR VHF transceiver Motorola Radius M110 was manufactured by Motorola GmbH therefore being an European radio. Since many professional radio service users has replaced this transceiver with newer gear, a considerable number of M110 has appeared on HAM flea markets. M110 is a simple yet fine mobile transceiver with pretty good receiving performance, detachable front pannel, 10W TX power (depends on the version) and it would be a waste to throw it away or to use it just as a source of electronic components instead of giving it a new life in a HAM shack.

Turn a professional 2m VHF FM PMR transceiver Motorola Radius M110 into an amateur radio


Modification by Beno S56KZN and Aleks S56AL

W A R N I N G - All modifications described on this page are performed to your own risk. Authors can not overtake any responsibility of any sort of the possible damages that would result from unskilfully performed modifications, described on this web page.

The PMR VHF transceiver Motorola Radius M110 (in further text referred as M110) was manufactured by Motorola GmbH therefore being an European radio. Since many professional radio service users has replaced this transceiver with newer gear, a considerable number of M110 has appeared on HAM flea markets. M110 is a simple yet fine transceiver with pretty good receiving performance and it would be a waste to throw it away or to use it just as a source of electronic components instead of giving it a new life in the HAM shack.

The modification described on this page is not just a reprogramming of the existing 9 channels of the M110 to HAM frequencies. It is a hardware upgrade that will turn the PMR transceiver into a full-featured HAM transceiver. After the modification has been done the transceiver supports following functionality:

  • Coverage of the complete European 2m HAM band 144.000,0 kHz ... 145.987,5 kHz
  • Available tuning steps: 12,5kHz, 25kHz and 100 kHz
  • Repeater (-600) kHz and inverse repeater (+600 kHz) operation
  • 1750 Hz repeater tone
  • Automatic setting of the repeater offset when the frequency is changed, later it can be manually switched to the inverse repeater, repeater or simplex mode
  • Display of the operating frequency in a 7 digit mode, for example 145.787.5
  • Memorising of the latest set frequency and tuning step during power down
  • Replacement of the "ears-breaking" key-clicks with a more gentle click tones and elimination of the "strokes" when squelch opens /closes
  • Measurement and display of the supply voltage in 0,1V resolution
  • RF characteristics of the transceiver are kept unchanged

Read More....

Related Articles