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MURS encryption
- Thread starter mike619
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KD8DVR
Member
It is not legal to use scrambling or encryption on MURS.
mike619
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Is that a fact?, as I don't intend to sound rude or anything but your signature say's all comments may or may not resemble actual fact, and Any message posted constitutes opinion only.
mmckenna
I ♥ Ø
Federal Register :: Request Access
www.ecfr.gov
A grant of equipment certification will not be issued for any transmitter type that incorporates one or more voice scrambling or other obscuring features for any of the Personal Radio Services that provide for voice (telephony) communications on shared channels (see § 95.359), if the application for such grant is filed on or after December 27, 2017.
In other words, a radio that has the ability to run encryption would not be able to receive FCC Part 95J certification after Dec. 27, 2017. Before that, there were some FRS radios that had snuck through scrambling. FCC put a stop to that.
Since 95.381 covers all the personal radio services, including MURS, it would apply there also.
If you had a radio that had a legit Part 95J certification for use on MURS that came from the factory with encryption capability, then it would appear there is no rule against using it.
But, I doubt there are many radios out there that would have that.
I'm sure that wouldn't stop someone from taking a non-95J certified radio and loading it up with AES-256, but then that's not legally a MURS radio, is it?
KD8DVR
Member
In this case, it *is* a fact. Per MURS regulations.
As always, read the FCC regulations for a radio service you are interested in, before you get involved with said radio service.
oregontreehugger
Member
Been hearing someone around here on MURS channels using what sounds like Motorola Securenet encryption (only a "whooshing" noise with any traffic).
www.sigidwiki.com
Motorola SECURENET - Signal Identification Wiki
Motorola SECURENET ("analog" encryption) was a secure voice option for conventional and Motorola Type II trunked systems, encoding the voice using 12kbps CVSD and encrypting the bitstream. It is easily identified by the 6 kHz tone at the end of transmission. As it is not 12.5 kHz FCC...
nd5y
Member
It could be some other type of data and not digital voice. There are several products that can use MURS for data or telemetry.
oregontreehugger
Member
Good point -- I know I've heard the Dakota Alert driveway alarms, as well as the Garmin Astro dog trackers, too. Some voice users at retail stores as well. MURS seems to be slowly expanding in use around here.
The audio sample of the Securenet encryption seems to line up to what I'm hearing, but I'll have to pay closer attention to see if I hear the beep at the end of TX, and maybe dust off the SDR.
The audio sample of the Securenet encryption seems to line up to what I'm hearing, but I'll have to pay closer attention to see if I hear the beep at the end of TX, and maybe dust off the SDR.
RFI-EMI-GUY
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Are you hearing a 6 KHz chirp at the end of transmission?Been hearing someone around here on MURS channels using what sounds like Motorola Securenet encryption (only a "whooshing" noise with any traffic).
Motorola SECURENET - Signal Identification Wiki
Motorola SECURENET ("analog" encryption) was a secure voice option for conventional and Motorola Type II trunked systems, encoding the voice using 12kbps CVSD and encrypting the bitstream. It is easily identified by the 6 kHz tone at the end of transmission. As it is not 12.5 kHz FCC...
oregontreehugger
Member
Not sure yet -- but I'm going to be listening specifically for that end chirp next time!
I'll check back in once I hear more traffic... seems like they've been popping up every couple of days or so on various MURS channels (but I'm also not monitoring 24/7).
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