Tri-Cities
Scanner Frequencies
July 2009 Newsletter
Listen to the live scanner at:
http://scannerfood.com/swvafeed.htm
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| Well Since the last newsletter, we've
found a lot of new frequencies... Here's a sample of what's new....
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Save more than just money! |
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| Air Show Virginia Highlands Airport 18521 Lee Highway Abingdon, VA http://www.vahighlandsairport.com/ Saturday, July 25th, 2009 10:00AM to 4:00 PM Admission is $5.00, Children 12 & under are free. All proceeds from the show will benefit Kiwanis Childrens Programs http://www.abingdonkiwanis.org/ 122.800 MHz is the CTAF (Common Traffic Advisory Frequency) We'll be scanning for any additional frequencies, See ya there! We expect they'll be traffic on FRS (Family Radio Service) |
| Pagers Before cell phones there was another trendy way to communicate, beepers! Today they're commonly referred to as "Pagers". The industry relies on VHF and UHF frequencies to transmit data in a format called "POCSAG", this format is used primarily in our area. Most of the pager networks in major cities and other parts of country operate in the 900 MHz range. 152 and 158 MHz range pagers dominate the Tri-Cities with the frequencies being licensed to multiple companies. When it comes to the VHF and UHF frequencies, pager transmitters may be the only permanent radio transmitter in a small town! Water towers and particularly hospital roofs are favorites among the pager companies. Since pager transmitters occupy the old bandwidth spacing of 30 KHz, and usually transmit 1000 watts or more, they are a common source of interference in this area. Scannerfood's live scanner feed is sometimes greeted with a screeching and "yeee ong, yee ong" sound. Its suspected that high power pager transmitters in the 152 and 158 MHz band are the culprit. This interference reaches far further than the live scanner feed, reports of interference have been felt by local police, fire, and EMS systems as well as amateur radio repeaters. One common phenomenon is "mixing" intermodulation, this occurs when two powerful transmissions occur simultaneously. The end result is the creation of a third frequency with the content of both mixing frequencies. Heres a nerdy read from the ARRL if you wish to learn more: ARRLWeb- RFI Intermodulation ScannerMaster offers "Notch Filters" these filters block specific frequencies and can be particularly useful if you live close to a pager transmitter. A usual culprit in this area for the second frequency is National Weather Service's Noaa Weather Radio transmitters operating around 162 MHz. We'll touch on interference in more depth in a future newsletter; in the meantime, here are some pager frequencies. These are the frequencies you DON'T want to program into your scanner. When searching for new frequencies, skip these.
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Download the Radio Phonebook (Updated July 22, 2009) Stats / Last Months Stats Frequencies:1214 up from 1186 Unit Numbers:2525 up from 2477 |
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Here's what we're Still
working on...
New LTR Trunked Systems
(Still working!! Freqs now confirmed)
VA Hospital (In the works)
Interoperability
Pager effects Pt2
Interference
Airshow Frequencies (if any)

That's it for now, Happy Scanning!
We want to hear from you!
Drop us an email at kf4uel@yahoo.com

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