Unknown UHF - ENC 451.80000

[spacellamaman]

so for those rx'ing, is the general consensus that traffic is primarily late afternoon into the evening?

since you guys, far more intensively than i, follow (and have memorized generally) the RIDs/patterns for around here be it VIPER/UASI/Fed conv etc, while i realize the universe can have 2 identical RIDs, are ya'll seeing any crossover? some ranges look familiar to me but many do not is why i ask.

if this keeps up i may be forced to do a road trip. tho prob have to wait til sage is over. thats enough in itself

 

[BigLebowski]

Alot of similarities to this list, specifically NC, VA, and MD. The 9xxxxxx ID's are new though.

Federal Radio ID Planning - The RadioReference Wiki

wiki.radioreference.com

so for those rx'ing, is the general consensus that traffic is primarily late afternoon into the evening?

since you guys, far more intensively than i, follow (and have memorized generally) the RIDs/patterns for around here be it VIPER/UASI/Fed conv etc, while i realize the universe can have 2 identical RIDs, are ya'll seeing any crossover? some ranges look familiar to me but many do not is why i ask.

if this keeps up i may be forced to do a road trip. tho prob have to wait til sage is over. thats enough in itself

 

[spacellamaman]

yeah the 309's caught my attention from back when i did some fed tracking off and on. everything else though...sheesh, where to start. ya'll might want to consider compiling a total list of unique RIDs just to get a better handle on how big this is. I mean geez, 25 in a single monitoring session? i think this counts as a big deal, at least in our little corners of the universe. frankly i would have thought good ole ChrisP would be writing up an article well before now. anyhoo, keep up the good work

 

[RFI-EMI-GUY]

Given some of the RID Blocks, Could this be some counter protest excercise in advance of the RNC in Charlotte? I know there is also some dispute with the Governor going on whether to hold it or not due to Covid. Maybe all this is being exercised off site in advance?

Charlotte 2020 Host Committee – Republican National Convention

www.charlottein2020.com

 

[RaleighGuy]

... frankly i would have thought good ole ChrisP would be writing up an article well before now. anyhoo, keep up the good work

Hopefully @ChrisP has noticed this thread

 

[ChrisP]

Hopefully @ChrisP has noticed this thread

I have been watching this thread for a while now, but have actually been busy with other things.

Working on the next Federal Wavelengths column now, so watch for further developments...

- Chris

 

[spacellamaman]

I have been watching this thread for a while now, but have actually been busy with other things.

Working on the next Federal Wavelengths column now, so watch for further developments...

- Chris

excuses excuses

 

[BigLebowski]

As fast as it appeared, it was gone. Nothing heard today at all.

 

[spacellamaman]

sonofa....and i just bout had the car all packed and was gonna call in sick to work....

any theories?

 

[RFI-EMI-GUY]

"They" are watching this thread and changed Comm Freqs

 

[spacellamaman]

"They" are watching this thread and changed Comm Freqs

well "they" are running short of areas to change to. not that "they" have a holy handgrenade's chance of successfully eluding us....i mean...unless they...umm ya know...use those evil things...ummm that we all have...and use...and uhhhhmmm....dangit

LONG LIVE RADIO!

 

[RaleighGuy]

Training doesn't last forever, this time we were lucky enough to have some good radio ears in that area to make the discovery. Thank you gentlemen for bringing all the information to our attention, and giving us a joint mission to monitor and figure out. This thread is a great reminder (contrary to the sentiments of so many on the forums) that even encrypted traffic is interesting. I'm sure they'll be back one day!

 

[ScubaJungle]

Training doesn't last forever, this time we were lucky enough to have some good radio ears in that area to make the discovery. Thank you gentlemen for bringing all the information to our attention, and giving us a joint mission to monitor and figure out. This thread is a great reminder (contrary to the sentiments of so many on the forums) that even encrypted traffic is interesting. I'm sure they'll be back one day!

They must have a base/operations center somewhere too, so maybe someone will stumble upon it and be able to link it with this info too.

 

[spacellamaman]

They must have a base/operations center somewhere too, so maybe someone will stumble upon it and be able to link it with this info too.

or die trying!!!!

tho, knowing my luck, simply arrested.

 

[RFI-EMI-GUY]

I am preparing for the day my local PD goes with encryption. I have studied wide band Aperiodic Receivers which were used in WWII to intercept clandestine transmissions. The design is very crude, a very simple receiver.

I have a lot of RF filters including preselectors tuned for the up link of the 800 MHz public safety band. My plan is to make a receiver consisting of a bandpass filter, an RF preamplifier a log amplifier and detector. All these parts available on ebay cheaply.

So for example there is police activity around my home or car, I will get an alarm from the detector whenever a mobile or portable transmits.

Another idea,less sensitive but equally effictive is to dedicate a scanner to scan for the local oscillators of common P25 radios used by the local agencies. The radio models are well known, the IF easily determined and the control channels are published. So if a police radio wanders into my neighborhood, my sensitive antenna will receive that unintentional radiation and alert me.

This technology was also used in WWII and was used by the UK to enforce the TV receiver tax.

Yes, I know you are listening and what you are listening to because your radio is telling me.

https://www.cryptomuseum.com/df/receivers.htm

 

[BigLebowski]

Umm.. could you not just use close call?

 

[RFI-EMI-GUY]

I could, but want something going full time, dedicated to one band. A black box in the car. Sort of a Geiger counter for police activity.

I have an BCD536HP, but operating that thing requires a manual. So there it sits monitoring one agency.

 

[BigLebowski]

You know you can turn off all the close call bands except 800mhz. And how do you plan to filter out all the other users on the system and only alert for the PD?

 

[RFI-EMI-GUY]

You know you can turn off all the close call bands except 800mhz. And how do you plan to filter out all the other users on the system and only alert for the PD?

Honestly that radio is a pain to program. Despite the new ICOM SDR receiver, I am keeping my big ICR-9000 because it has huge buttons and knobs.

I expect false alarms. It will give me confidence it is working. There are far more police vehicles than utility vehicles roaming around our little town and the Fire Department is mostly idle. The police TG is the most active. So in my case, it will be adequate.

I have all the parts, putting it together simple.

The fact is at some point our "scanners" will be come obsolete by technology so we will have to be clever in determining how radios are being used around us. There is some of this going on now with SDR and networked SDR. This past thread was interesting because it studied how some uninterrupted portion of transmissions revealed likely covert activity. This SIGINT operation could have lead to a HUMINT operation, with someone scoping out the locations where the radios were being used to determine who, why and what.

I thought this was quite cute:

Fed Detector

The F.E.D. detects digital RF emissions

www.techlib.com

Hope this link works:

Title: Detecting and locating electronic devices using their unintended electromagnetic emissions

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwiypMz80PjpAhXgRjABHRCjD90QFjAAegQIBRAB&url=https%3A%2F%2Fscholarsmine.mst.edu%2Fcgi%2Fviewcontent.cgi%3Freferer%3D%26httpsredir%3D1%26article%3D3154%26context%3Ddoctoral_dissertations&usg=AOvVaw0VRPE4t89d2QIncp2YvDm8

 

[RFI-EMI-GUY]

Meant to say un encrypted. Damn you auto collect