Encryption Question

[BOBRR]

Hello,

Can one assume that if there is encryption, e.g., a P.D., you will "always" hear some noise ?

When would this be true, or untrue ? Audio settings, etc. ?

Bob

 

[RaleighGuy]

Audio settings on newer Whistler scanners, UNIDEN scanners I believe just have silence, skip over them.

 

[doctordialtone]

UNIDEN scanners I believe just have silence, skip over them.

This is accurate.

 

[Whiskey3JMC]

Hi Bob:
It depends on the receiver. Some emit garbling which sounds like R2D2. As mentioned above me, Unidens will silence the audio while displaying ENC or ENCRY on the screen. Whistlers make a busy signal type noise

 

[RaleighGuy]

Whistlers make a busy signal type noise

On newer Whistlers (IScan/EZ Scan) you can set the audio for silence, garbled audio, or busy tone.

 

[a29zuk]

On the Uniden 396T, which is an older scanner, you will hear a short burst before the transmission is muted.

Jim

 

[ofd8001]

At some point, the type of encryption may be a factor. Locally there is a lot of ADP. On some ancient (396) scanners it would be a buzzing kind of sound and not silence or move on.

 

[GlobalNorth]

If someone uses encrypted frequency hopping spread spectrum, one might only hear a very small portion of an unintelligible transmission.