RadioReference on Facebook   RadioReference on Twitter   RadioReference Blog
 

Go Back   The RadioReference.com Forums > U.S. Regional Radio Discussion Forums > California Radio Discussion Forum > Sacramento Valley Area Discussion


Sacramento Valley Area Discussion - Local area specific discussion for Sacramento County and its outlying areas such as San Joaquin and Stanislaus Counties.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1 (permalink)  
Old 12-06-2017, 4:57 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: N CA
Posts: 253
Default USFS LE frequency

Been hearing activity on 171.7875 for the last couple of days. Yesterday it was right after 0600, and again around 1000. Today, much more activity, all digital using PL's of 100 and 146.2 Both are full scale signals.
No ID heard. Some are long transmissions, does not appear to be a conversation. Testing? Anyone else
hearing this, or have any info?
Reply With Quote
Sponsored links
  #2 (permalink)  
Old 12-06-2017, 5:10 PM
northzone's Avatar
Member
  Premium Subscriber
Premium Subscriber
 
Join Date: Dec 2002
Location: Northern California
Posts: 797
Default

I'm confused, you say all digital but digital does not use PL's, they use NAC codes.
Reply With Quote
  #3 (permalink)  
Old 12-06-2017, 8:40 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: N CA
Posts: 253
Default

All I know is that I'm hearing a digital xmission and reading PL's.
No analogue xmission, and I hear a squelch tail.
Reply With Quote
  #4 (permalink)  
Old 12-07-2017, 12:43 AM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Mar 2015
Location: Reno NV
Posts: 168
Default

Maybe analog encryption ? Like DES-XL
Reply With Quote
  #5 (permalink)  
Old 12-07-2017, 6:52 AM
ecps92's Avatar
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Jul 2002
Location: Taxachusetts
Posts: 9,364
Default

Digital, yet PL's ? Sounds like your radio is programmed for Analog and is falsing the PL Tones during the Digital [P25] transmissions.,

Double check your settings and set this for P25
Quote:
Originally Posted by Norman View Post
Been hearing activity on 171.7875 for the last couple of days. Yesterday it was right after 0600, and again around 1000. Today, much more activity, all digital using PL's of 100 and 146.2 Both are full scale signals.
No ID heard. Some are long transmissions, does not appear to be a conversation. Testing? Anyone else
hearing this, or have any info?
__________________
Bill N1KUG
Cruise Ship Frequencies
http://www.scanmaritime.com
Reply With Quote
Sponsored links
  #6 (permalink)  
Old 01-11-2018, 12:59 AM
Member
  Audio Feed Provider
Audio Feed Provider
 
Join Date: Nov 2009
Location: S.F. Bay Area
Posts: 280
Default

I've been hearing this too from my remote receiver in Calaveras County at 4000 feet. The transmissions are about 10 seconds long with a repeater tail. Total white noise. 996XT is programmed for any audio mode so I would receive it if P25 in the clear. I haven't been able to catch the transmissions when I"m at the radio to see if "enc" shows up. There is just one burst every few hours or so and is strong in the Mother Lode. The audio sounds like a p25 transmission when listening in FM mode, but as I said, the scanner is programmed to receive all modes.
Reply With Quote
  #7 (permalink)  
Old 01-11-2018, 4:57 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: N CA
Posts: 253
Default

I heard one yesterday, PL 100 which would be Hawkins Peak for the ENF. That is located in Alpine County
SE/O Hwy 88 and 89 intersection. Maybe that's what you are hearing? Also a lot of testing on the Service Net for the ENF, both digital and analog. I can't receive P 25.
Reply With Quote
  #8 (permalink)  
Old 01-13-2018, 4:45 PM
Member
  Audio Feed Provider
Audio Feed Provider
 
Join Date: Nov 2009
Location: S.F. Bay Area
Posts: 280
Default

At about 1:20 this p.m. I heard a unit run a subject. This is the first time I have heard voice which was analog. I didn't get a location of the unit but the signal quality was similar to that of Alpine County at the remote reveiver, so prob is the site you suggest. STF quite active this holiday weekend with LE up at Lake Alpine using STF Admin Net.
Reply With Quote
  #9 (permalink)  
Old 01-13-2018, 7:49 PM
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Dec 2002
Location: N CA
Posts: 253
Default

I heard most all of that, female LE unit, quite busy today. The only LE freq activity that I heard came from the MNF. One LE unit also quite busy. The MNF is the only Forest that I hear using the LE on a regular basis.
Reply With Quote
  #10 (permalink)  
Old 01-14-2018, 1:08 PM
Member
  Audio Feed Provider
Audio Feed Provider
 
Join Date: Nov 2009
Location: S.F. Bay Area
Posts: 280
Default

Probably was from MNF as I have heard traffic from that forest before. Audio was poor tho. The site testing last week seemed much stronger..closer to ENF or STF.
Reply With Quote
  #11 (permalink)  
Old Yesterday, 12:24 PM
norcalscan's Avatar
Member
  Amateur Radio Operator
Amateur Radio
 
Join Date: Feb 2003
Location: The "real" Northern CA
Posts: 119
Default

I have the 171.7875 in the scancal.org live scanner, based in Red Bluff with great coverage of the eastern side of the MNF. It has just over a minute delay so if you are ever wondering if the traffic is coming from up north, you can quickly jump on that and listen for a few minutes to see if I hear it. Granted, during the winter I do have local law on there and the USFS law net isn't on any priority so it might get missed, especially a short transmission.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 10:51 PM.


Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
All information here is Copyright 2012 by RadioReference.com LLC and Lindsay C. Blanton III.Ad Management by RedTyger
Copyright 2015 by RadioReference.com LLC Privacy Policy  |  Terms and Conditions