Blocking encrypted traffic on Quantar

[seleong]

I actually did this, but I was hoping to keep it a totally open repeater with default NACs, but until I implement one/more of these corrective actions, I guess the changed NAC is the quick solution... Thanks!

Can't you just change the NAC to something unusual? Yep, I've heard that ADP will pass easily since it's embedded in the voice frames while the data/sync remain standard. There is an encryption bit or two passed in the data stream.

 

[cyrus]

Changing the NAC will keep them out for a minute or two.

All it takes is a scanner made in the past few years to show the NAC.

You could use different NAC's on the input and output but it wouldn't take long for someone to get close enough to catch someone on the input.

 

[kayfox]

I think this is a good time to use those foxhunting skills hams are famous for.

 

[MattSR]

Yep, I've heard that ADP will pass easily since it's embedded in the voice frames while the data/sync remain standard. There is an encryption bit or two passed in the data stream.

That is true for any and all P25 encryption algorithms.

 

[BIG-BOY]

Steve. I am aware of your situation and who the suspects may possibly be. I recommend the use of part 97, including a civil injunction since your Quantar is privately owned. I had a situation where I had to prohibit a ham from use of my repeaters by invoking the provisions of part 97, including threats of invoking a civil injunction. It has been two years now since my prohibitive actions and that ham has not appeared on my repeaters. I will send you a PM as well

 

[okto]

Would the encryption module on the repeater with a required key (different than that being used by the interlopers) not prevent encrypted traffic from being passed? In order to have a repeater pass encrypted traffic securely, mustn't it equally reject traffic with a key that doesn't jive?

 

[com501]

I think this is a good time to use those foxhunting skills hams are famous for.

Am I the only ham that owns a Doppler Systems Mobile DF??

 

[MattSR]

There is no encryption module in a Quantar..