Survivalism & Self Sufficiency Topics > The HAM Radio Board

Encrypted MURS Voice Communications?

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idelphic:

--- Quote from: laser on September 23, 2009, 08:33:52 AM ---...

The only way around this that I can see if the encryption circuity would have to be included at the time of manufacture of the radio so that it is FCC certified.  There does not appear to be a way to get an external add-on certified. 
laser



--- End quote ---

Don't know how many people are going to be interesting in Part 97 come POST,...  But is good to know.  Thank you for doing the research.

laser:
I was just listening to Security Now Podcast #213 "Cracking GSM Cellphones"  Very interesting stuff.  Basically,
for a few thousand dollars anyone can who wants to can listen to cellphone streams.  The encryption cellphones use, although
strong enough back in the early 1980's, is very crackable now days.  I think you would have a MUCH larger market if you sell your data encryption device to cellphone users.  I see an ad campaign aim add company CEOs etc.   A bit of FUD about competitors listening in on their cellphone calls.  The high end company exec. has to make a important call and puts your addon device to the front of his iphone now no one but the person he wants to hear can understand a word.  According to the podcast there are approx. 3 billion GSM cellphones in use 80% of all cellphones.   Thats a BIG market.
laser

Sandman:

--- Quote from: laser on September 23, 2009, 08:33:52 AM ---When I got a few minutes I did a bit more research.  MURS allows digital, but only for radios with Built IN digital.
MURS does not allow add-ons.

FCC Rules require that you transmit on a MURS frequency only with a radio model certificated for MURS. You may transmit data communications in MURS only if the radio is certificated for data communications, or of those transmissions otherwise comply with the rules and those transmissions can be imposed on a conventional voice emission. You may not make any internal modifications or additions to a MURS radio to transmit data communications.

The only way around this that I can see if the encryption circuity would have to be included at the time of manufacture of the radio so that it is FCC certified.  There does not appear to be a way to get an external add-on certified. 
laser


--- End quote ---

Then perhaps this encryption module could find legal use with the Trisquare SS digital radios mentioned by CBMS above?

http://www.trisquare.us/index.html

Does anyone have any more experience with these units?

Thanks

Scubacat:
Sooo...did this just die? Has a product been made?

Sandman:

--- Quote from: Scubacat on December 30, 2009, 10:36:16 PM ---Sooo...did this just die? Has a product been made?

--- End quote ---
I haven't heard anything new about an encryption unit, but I have discovered that the TriSquare radios do not actually transmit a digital signal. They transmit an analog signal on a SS freq. hop. The "digital" part of their marketing only covers the SS algorithm. And their SS is not foolproof.

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