Recently I wanted to use my Alinco DJ-MD40 Commercial DMR radio with FRS/GMRS radios as part of a CERT Team deployment. The CERT Team has Motorola Talkabout T6530 portable FRS radios. Motorola has a feature called 'Interference Eliminator' (i.e. privacy code) that is configurable for each channel. These are CTCSS and DCS codes that they have programmed into the firmware of the radio as 0 - 99. I could not find how Motorola mapped each of these 100 privacy codes to each of the 100 settings. So I used my Alinco DJ-G7 HT to scan for each one of the 100 codes. 0 is supposedly open with no CTCSS or DCS code defined, but as you can imagine setting it to 0 causes the radio to receive some interference from nearby RF sources such as LED lights and whatnot. So setting the interference eliminators will make using these FRS radios a more pleasant experience.
I've attached the listing of the CTCSS and DCS codes for 1 - 99. 1 - 38 are CTCSS and the remainder are DCS. I could not find a DCS code being transmitted for privacy code 60. Perhaps that's a bug in their firmware. I tried two different FRS radios transmitting on 60.
I hope this table that I've attached is useful to the radio community.
73,
Bryan
I've attached the listing of the CTCSS and DCS codes for 1 - 99. 1 - 38 are CTCSS and the remainder are DCS. I could not find a DCS code being transmitted for privacy code 60. Perhaps that's a bug in their firmware. I tried two different FRS radios transmitting on 60.
I hope this table that I've attached is useful to the radio community.
73,
Bryan
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That is very useful information. I'm not sure if Motorola was trying to hide the information or simply make it easier for the end user (or both).
