Receiving encrypted comms on 167.2125, 167.3375, and 167.4875. Same signal/traffic on all three channels. 167.3375 is the repeater out. I suspect 167.4875 is the input.
Fed activity?
- Thread starter gldavis
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522
Active Member
I must have missed it. Nothing on currently. Or at least that I'm hearing (or not hearing as it were)
522
Active Member
I wasn't patient enough. Heard it coming in as well.
still strong in my area. South Davis Co
ecps92
Member
What NAC ?
And I am guessing all key up at the same time ? Looks to me like a Vote-Scan or wide-area net
with an agency we typically see in the 167 band but [IMHO] the input is down in the 162-164 range, those are all repeaters
And I am guessing all key up at the same time ? Looks to me like a Vote-Scan or wide-area net
with an agency we typically see in the 167 band but [IMHO] the input is down in the 162-164 range, those are all repeaters
ecps92
Member
And for Federal the standard [not everyone has gone there yet] is
wiki.radioreference.com
Federal VHF/UHF Channel Plans - The RadioReference Wiki
NAC was/is 293 on all three.
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167.3375 and 167.4875 are almost certainly too close to be a repeater. They could be simulkeyed repeaters though. I would look around 162-165 area for inputs.
ecps92
Member
Most of the Country that agency uses $167, but there are exceptions and [IMHO] those exceptions
are driven by near-by other Field Offices and the need to have a different NAC to eliminate interference.
IF you have DSD+ or other means, the user RIDS will likely begin as 348, which would confirm
the Salt Lake Field office.
Salt Lake Field Office coordinates 18 different RA [Resident Agencies] in the region. [3 states]
Based on monitoring it is likely there are 18 different "Wide Area" or "Vote-Scan" networks
for this FO, [18 radio zones of Repeaters - usually one Zone per RA] and then add a few
Stand Alone [Admin] and then the Interop and Nationwide Zones
And this one agency is generally NTIA compliant with the Repeaters being 167 and higher
wiki.radioreference.com
the use of 167 Repeaters is likely an NTIA exemption for the Hoovers 
are driven by near-by other Field Offices and the need to have a different NAC to eliminate interference.
IF you have DSD+ or other means, the user RIDS will likely begin as 348, which would confirm
the Salt Lake Field office.
Salt Lake Field Office coordinates 18 different RA [Resident Agencies] in the region. [3 states]
Based on monitoring it is likely there are 18 different "Wide Area" or "Vote-Scan" networks
for this FO, [18 radio zones of Repeaters - usually one Zone per RA] and then add a few
Stand Alone [Admin] and then the Interop and Nationwide Zones
And this one agency is generally NTIA compliant with the Repeaters being 167 and higher
Federal VHF/UHF Channel Plans - The RadioReference Wiki
from my notes: rid=3481090/3485056/3485249/3485245/3481099(was not encrypted a couple weeks ago)/3481146/3481126/ and several others. I see a pattern developing.
("Hoovers". I like that. )
("Hoovers". I like that.
)That says nothing about repeater offsets other than there is no standard. But unless you're using TDMA and single-frequency repeat, you need more than 150KHz of offset to not desensitize the RX side of the repeater.And for Federal the standard [not everyone has gone there yet] is
Federal VHF/UHF Channel Plans - The RadioReference Wiki
ecps92
Member
Yes it does
Yes there is no standard Off-set plan, but...
162.0500-166.4875 Mobile/repeater input
169.5125-173.2000 Base/repeater output
173.4000-173.9875 Base/repeater output
and of course there are exceptions/exemptions issued by the NTIA on a case-by-case basis
and from monitoring many 167.xxxx, 168.xxxx and 169.xxxx FBI Repeaters that use 162-165 mhz inputs, there must be many of them
Yes there is no standard Off-set plan, but...
162.0500-166.4875 Mobile/repeater input
169.5125-173.2000 Base/repeater output
173.4000-173.9875 Base/repeater output
and of course there are exceptions/exemptions issued by the NTIA on a case-by-case basis
and from monitoring many 167.xxxx, 168.xxxx and 169.xxxx FBI Repeaters that use 162-165 mhz inputs, there must be many of them
Last edited:
ecps92
Member
Yes there is a pattern for "the Hoovers" RID assignments
mt-fedfiles.blogspot.com
Federal P-25 Radio Identifications
I am currently starting to catalog the P-25 radio ID numbers that belong to federal agencies. Not all have been connected to a specific agen...
mt-fedfiles.blogspot.com
from my notes: rid=3481090/3485056/3485249/3485245/3481099(was not encrypted a couple weeks ago)/3481146/3481126/ and several others. I see a pattern developing.
("Hoovers". I like that.
I keep forgetting about the MT-Blogs. I really miss that magazine.
ecps92
Member
Altho MT Ceased, many of the Editors went to
The Spectrum Monitor - Powered by Network Solutions. - well worth the investment
The Spectrum Monitor - Powered by Network Solutions. - well worth the investment
I been a subscriber to TSM from the beginning.
Which proves my point that there has to be more than 150KHz between input and output frequencies. That's indicating 3MHz or more. What's your point?Yes it does
Yes there is no standard Off-set plan, but...
162.0500-166.4875 Mobile/repeater input
169.5125-173.2000 Base/repeater output
173.4000-173.9875 Base/repeater output
ecps92
Member
Your statement was "That says nothing about repeater offsets" - when it totally discusses Repeater input/outputs aka Offsets
Department of Justice
FBI - Salt Lake City
| Frequency | Input 
| License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|---|
| 167.33750 | BM | 293 NAC | FBI SLC 1 | FBI Salt Lake City 1 | P25 | Federal | ||
| 167.76250 | BM | 293 NAC | FBI SLC 2 | FBI Salt Lake City 2 | P25 | Federal | ||
| 167.96250 | BM | 293 NAC | FBI SLC 3 | FBI Salt Lake City 3 | P25 | Federal | ||
| 170.70000 | BM | 293 NAC | FBI SLC 4 | FBI Salt Lake City 4 | P25 | Federal | ||
| 170.72500 | BM | 293 NAC | FBI SLC 5 | FBI Salt Lake City 5 | P25 | Federal | ||
| 170.75000 | BM | 293 NAC | FBI SLC 6 | FBI Salt Lake City 6 | P25 | Federal |
| Frequency | Input
| License | Type | Tone | Alpha Tag | Description | Mode | Tag |
|---|---|---|---|---|---|---|---|---|
| 167.36250 | RM | 293 NAC | USMS SLC | Salt Lake Operations | P25 | Federal |
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