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Ham Radio/Programming & cloning a two way radio


Hi Chris,

I realize this question isn't exactly about Ham radios, but maybe you can help. I have 2 Motorola two way radios, (model RDU4160d) & I need to have the frequency changed on channel 1 to a custom frequency that the railroad we provide maintenance for uses. I have the frequency, but from what I understand, only a Dealer or radio servicing company can program the frequency we need. Is this correct? Also, would it be possible to have one programmed, and clone the other one ourselves? Would the cloned radio now have the  custom frequency on channel 1, or would it just clone other types of radio settings?

Thanks for your time...

Your radios may or may not be capable of operating on the frequency you need.  If the operational range of your radios comes close to the railroad freq you want, it might be possible for an expert to make the change.  The change would require overriding the freq lockout of freqs outside the normal operation range of your radio.  Even if you could find someone that was capable of performing the the task, they might not want to do it for legal/licensing reasons.  It's probably not a practical modification.

Chris Bushman
Colfax, CA

Ham Radio

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Chris Bushman


I have been an amateur radio operator for about 41 years.


In real life I managed a small motion picture film lab in Hollywood. I've been a fireman, a teacher of English in Okinawa, a personal computer tutor. I am an Advanced Class Ham radio operator using my originally issued callsign WB6EEQ. I have operated for extended periods of time from Okinawa (KR6FX & KR6OP), Texas (K5VXG), and Mississippi (K5TYP). While in the Air Force, I was a Manual Morse Radio Intercept Operator.

BS Zoology, UC Davis

Member, Society of Motion Picture/Television Engineers - Member, American Radio Relay League - Member, Quarter Century Wireless Assn. - President, Zen Nippon Airinkai, So Cal Chapter - Member, Maltose Falcons Homebrewing Society - Alumni, American Brewers' Guild

I have held Conditional, General, and Advanced Class Ham radio licenses. Attended UC Davis to study Zoology. Go figure!?

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