Racal MA4204 military digital voice speech scrambler crypto radio NOS encryption For Sale


Racal MA4204 military digital voice speech scrambler crypto radio NOS encryption

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Racal MA4204 military digital voice speech scrambler crypto radio NOS encryption:
$599

Racal MA4204 pair digital voice speech scramblers crypto military radio

NEW OLD STOCK

Description

These are TWO military digital voice encryption units model MA4204, made by defense and aerospace manufacturer Racal Ltd. UK. (so you will get TWO units when you win this). The units are new, NOS (New Old Stock), never used; not a scratch on them.

These units are very rugged (metal case all around) and extremely simple to connect to ANY two-way radio. See this website for the details. They are narrow-band capable, so they will also work with SSB equipment.

These units are digital scramblers, so this is NOT one of those cheap scramblers based on a simple voice inversion. There is NO way the average Joe will be able to crack these. The MA4204 uses a sophisticated time-division scrambling method. The scrambling order of the time segments changes each half second and is controlled by a pseudo-random number generator (PRNG). The PRNG itself can becontrolledby three rotary switches located at the front panel, allowing for 512 different sequences. That might seem low, but remember that a potential hacker would have NO knowledge of the pseudo random sequence, so even a single code would give you a lot of protection already. If you change the code on a regular basis, you become bulletproof.

The units take 12V to 30 V DC supply voltage, which can either be connected via the front using an external DC power supply, or at the back using the battery box (the box takes ten “C” type standard batteries), NOT SUPPLIED with units.

At this website you can find a ton of information about the MA4204 scrambler, as well as the pin connections for the hookups. Basically the scramblers are inserted between the audio inputs (microphone) and outputs (speaker) of the radio, so NO modifications to the radio are needed to make these units work.

Of course the communication channel does not need to be wireless; you could also connect these at your landline, or even at your smartphone if you use a 3-prong external audio jack.


PRICE IS FOR TWO UNITS, AS IN PICTURES




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