[FedCom] Twin Cities Monitors

[gary]

I hadn't heard of these scanners, so thanks for the post. [Google is 
your friend.] However, the Pro-96 can switch between analog and P25 on 
the fly. So if the analog and digital signal are controlled by the trunk 
system, you should be able to hear either. Now if there is another 
conventional repeater (analog) using one of the P25 trunk frequencies, 
this new NAC feature could be useful. I don't know if that situation 
occurs in real life.

I do know that some P25 systems transmit analog once in a while. I know 
this because when I search for control channels, I catch the occasional 
analog signal. Now since I found this signal by bandscanning the fed 
band, maybe I did stumble upon a conventional repeater using a P25 
frequency. In the future, I'm going to log these frequencies when it 
crops up.

J&D Schnoor wrote:
> I am located here in the suburban Twin Cities Metropolitan area and I 
> can't recall many people posting much of anything regarding federal here 
> in Minnesota in the past.  But that is not the purpose of my post.
> 
> I am wondering how many federal monitors here are anxiously awaiting the 
> arrival of the forthcoming GRE PSR-500 and PSR-600.  I was thinking that 
> the ability to have PL/DPL decoding AND NAC decoding should be of value 
> to federal monitors.  For example, say a given frequency is used both 
> analog and P-25.  Simply program it once as analog with the correct PL 
> tone, assuming one is used, and program a second time as digital with 
> the correct NAC code.  Hopefully if they are on analog, but not in the 
> clear, they will not be heard becasue of the PL tone.  If they are P-25 
> I hope the radio only passes audio if it is not encrypted.  Plus there 
> shouldn't be a whole lot of inter-modulation, mixing, front end overload 
> with the decoding ability.
> 
> I have a Uniden Bearcat BCD996T now.  With the federal frequencies that 
> I monitor now that are analog, I program the PL tone, if one is used, 
> but it isn't quite so simply for P-25 channels.
> 
> Slightly back to the bridge collapse, does anybody what frequencies the 
> U.S. Army Corps of Engineers is now using?  I was at Lock and Dam 1 a 
> couple of weeks ago and it looked to me as if the employee I spoke with 
> had a Motorola VHF P-25 portable with him. 
> _______________________________________________
> FedCom mailing list
> FedCom at mailman.qth.net
> http://mailman.qth.net/mailman/listinfo/fedcom
>