Three Unidentified Repeaters
- Thread starter Joseph11
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Unknown freqs
Could they be the input frequencies to a multiple or single repeater?
Matt
Joseph11 said:
Could they be the input frequencies to a multiple or single repeater?
Matt
I don't know if you have checked the Federal frequency allocations but I took a quick look. I used a several year old chart from an older version of Police Call, however, there is and official one on the net somewhere. It does not show specific uses such as a location but does show what agency(s) the frequency is allocated to.
172.575 is allocated to the National Park Service, the Bureau of Reclamation, and the Bonneville Power Administration. Since neither Reclamation or the BPA operate in the east the Park Service might be using it. I would suspect the Gateway National Recreation Area or Fire Island National Seashore. Another possibilty would be the Great Egg Harbor Scenic and Recreational River. There are quite a few units of the National Park System somewhat near you but I don't have any experience listening in the east, so I don't have much of an idea of the reception distance you may have.
168.175 is allocated to the U.S. Forest Service only. It is used extensively in the west. When a frequency is not needed by the agency it is aloocated to it can be used by other agencies after getting NTIA clearance so it is dificult to make a guess on that one.
166.850 is allocated to the National Park Service and the "National Capitol Police." I wouldn't think you could hear anything from the D.C. area so the guesses for 172.575 would apply.
Since the allocations are to the National Park Servcie on #'s 1 & 3 and the Park Service has so many units in the east I would suspect these frequencies are not being used by any other agency. With all the same PL's being used, it might be that the Park Service is using 168.175 as well as I have seen the Dept. of Interior and the Forest Service use each others frequencies in some areas for a number of different reasons. Since the PL is the same for all three they might all be used at the same Park Service unit. It would have to be a big unit with lots of radio traffic to require the use of three repeaters and I can't imagine such a unit in the east. In the west I've only run across half a dozen or so Parks where three nets are used and they are large Parks such as Grand Canyon, Yellowstone, Yosemite, and Sequoia Kings Canyon National Park.
Just guesses from almost the other side of the country.
172.575 is allocated to the National Park Service, the Bureau of Reclamation, and the Bonneville Power Administration. Since neither Reclamation or the BPA operate in the east the Park Service might be using it. I would suspect the Gateway National Recreation Area or Fire Island National Seashore. Another possibilty would be the Great Egg Harbor Scenic and Recreational River. There are quite a few units of the National Park System somewhat near you but I don't have any experience listening in the east, so I don't have much of an idea of the reception distance you may have.
168.175 is allocated to the U.S. Forest Service only. It is used extensively in the west. When a frequency is not needed by the agency it is aloocated to it can be used by other agencies after getting NTIA clearance so it is dificult to make a guess on that one.
166.850 is allocated to the National Park Service and the "National Capitol Police." I wouldn't think you could hear anything from the D.C. area so the guesses for 172.575 would apply.
Since the allocations are to the National Park Servcie on #'s 1 & 3 and the Park Service has so many units in the east I would suspect these frequencies are not being used by any other agency. With all the same PL's being used, it might be that the Park Service is using 168.175 as well as I have seen the Dept. of Interior and the Forest Service use each others frequencies in some areas for a number of different reasons. Since the PL is the same for all three they might all be used at the same Park Service unit. It would have to be a big unit with lots of radio traffic to require the use of three repeaters and I can't imagine such a unit in the east. In the west I've only run across half a dozen or so Parks where three nets are used and they are large Parks such as Grand Canyon, Yellowstone, Yosemite, and Sequoia Kings Canyon National Park.
Just guesses from almost the other side of the country.
167.9 is one of the eight standard tones adopted by most of the Federal and many state natural resource/wildland firefighting agencies. It is called "Tone 7" with the one through eight tones being, in tone identifier order, 110.9, 123.0, 131.8, 136.5, 146.2, 156.7, 167.9, and 103.5. The National Park Service is more consistent nationwide in applying this national standard than the BLM is so this further narrows these mystery repeaters down to the Park Service.
As for the 168.175 frequency, the Dept of Agriculture, which the Forest Service is in, often times uses frequencies allocated to the Forest Service for such things as their airport inspection of food and plant material coming in to airports via checked luggage. Dogs that sniff for this material are employed. Since the Forest Service uses the eight standard tones all of the time it would be consistent for the Dept of Agriculture to follow suit.
As for the 168.175 frequency, the Dept of Agriculture, which the Forest Service is in, often times uses frequencies allocated to the Forest Service for such things as their airport inspection of food and plant material coming in to airports via checked luggage. Dogs that sniff for this material are employed. Since the Forest Service uses the eight standard tones all of the time it would be consistent for the Dept of Agriculture to follow suit.
This is excellent information. I've never added anything to the wiki but this seems just the kind of info that should be added.Exsmokey said:
If I ever get some time I should add the standard tones and a lot more information relative to federal natural resource management agencies. I wrote the infomation on the Wiki for the National Interagency Fire Center frequencies for large incidents. I should expand on that with a lot of information that might be helpful for folks listening to wildland fire and the day to day activities of these agencies.
ecps92
Member
167.9 Hz
I would venture FBI.
Unless you can narrow down where they were, they could be anywhere
from New England to Florida and West.
I would venture FBI.
Unless you can narrow down where they were, they could be anywhere
from New England to Florida and West.
Joseph11 said:
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