Radio (scanner) Frequencies?
lad...@ccwf.cc.utexas.edu
This is probably not the right group, but does anybody out there know
austin's ems/fire/police radio frequencies?
please reply by e-mail.... thanks in advance!
john.
Barry Chalcroft
especially interested in the Greater Austin area. One group of frequencies
I am particularly interested is the Round Rock ISD bus system (my wife
drives a bus there, I'd like to listen). I believe it is a trunked system
that they use. Any other RRISD frequencies would be appreciated.
Some other frequencies I'm especially interested in:
TU Electric
Lone Star Gas
United Artists Cable (of Round Rock)
Local-active FBI,DEA,Customs,BATF,FCC, other U.S. Gov`t.
Any 800 MHZ frequencies at all
Any local business frequencies (towing, plumbers, anything)
Any local/regional 250-400 MHZ Military frequencies
Railroad frequencies
My intent is to get a concise list of all local/regional frequencies
that can be posted and updated regularly. This list is intended to be
a Co-op effort in which corrections and changes can be input by the users
for publication in the next edition. Hopefully a quarterly update will
suffice. Please EMAIL if you have any ideas, information, etc. Don`t
worry about duplicated information, `tis better to have too much info
instead of not enough.
Barry D. Chalcroft / N5NWI
Packet: n5...@n5ljf.tx
Internet: bar...@mpd.tandem.com
FAX (512)244-8247
Dewey Coffman
>Some other frequencies I'm especially interested in:
>
>TU Electric
>Lone Star Gas
>United Artists Cable (of Round Rock)
>Local-active FBI,DEA,Customs,BATF,FCC, other U.S. Gov`t.
>Any 800 MHZ frequencies at all
>Any local business frequencies (towing, plumbers, anything)
>Any local/regional 250-400 MHZ Military frequencies
>Railroad frequencies
>
>My intent is to get a concise list of all local/regional frequencies
>that can be posted and updated regularly. This list is intended to be
>a Co-op effort in which corrections and changes can be input by the users
>for publication in the next edition. Hopefully a quarterly update will
>suffice. Please EMAIL if you have any ideas, information, etc. Don`t
>worry about duplicated information, `tis better to have too much info
>instead of not enough.
>
It's been done.
From: jdw...@iastate.edu (Jason White)
Newsgroups: rec.radio.shortwave
Subject: Scanner Searchers Guide
Date: 28 Nov 91 18:09:39 GMT
Organization: Iowa State University, Ames, IA
Lines: 221
Originator: jdw...@pvcons.cc.iastate.edu
===============================================================================
SCANNER SEARCHERS GUIDE
Version 5, Compiled by N5OWK
Public Domain (p) January 1990
===============================================================================
30.000 - 46.610 MHz Business Band, Government
350020 McDonalds Drive-Up Orders (Common)
40.500 Emergency "Guard" (NAVY)
46.610 - 47.000 MHz Portable Phones
The following channels are listed as BASE/HANDSET.
46.610/49.670 Channel 1
46.630/49.845 Channel 2
46.670/49.860 Channel 3
46.710/49.770 Channel 4
46.730/49.875 Channel 5
46.770/49.830 Channel 6 (Also Baby Monitors on 49.83)
46.830/49.890 Channel 7 (Also Baby Monitors on 49.89)
46.870/49.930 Channel 8
46.930/49.990 Channel 9
46.970/49.970 Channel 10
47.000 - 49.670 MHz Business Band
49.670 - 50.000 MHz Portable Phones
50.000 - 54.000 MHz Amateur Radio
54.000 - 72.000 MHz VHF Television (Ch 2 - 4)
Television Channels are 6 MHz wide
Video is Fo + 1.25 MHz
Audio is Video + 4.5 MHz
Color Burst is Video + 3.5795 MHz
72.000 - 76.000 MHz Model Radio Control, Aviation and Industry
75.000 MHz is Aircraft Navigation Marker Beacon. This is near
airports on the ILS (Instrument Landing System) course. Three lights
are in the cockpit (Purple, Amber, White):
Purple - Outer Marker, Intercept Point, 4 to 7 Miles downrange
Two 400 Hz Dashes Per Second.
Amber - Middle Marker, Cat I Decision Height, 3500 Feet
downrange, 1300 Hz Dot and Dashes 95 times a minute.
White - Inner Marker, Cat II Decision Height, 3000 Feet
downrange, Six 3000 Hz Dots Per Seco nd.
76.000 - 88.000 MHz VHF Television (Ch 5 - 6)
88.000 - 108.000 MHz FM Commercial Advertising
108.000 - 112.000 MHz Aviation Navigation (Terminal VOR, ILS)
Currently 80 50 kHz Channels
112.000 - 117.950 MHz Aviation Navigation (VOR)
Currently 120 50 kHz Channels
118.000 - 136.000 MHz Aviation Communication
Currently 720 25 kHz Channels
121.500 Emergency, Emergency Locator Transmitters (ELT), "Guard"
122.700, 122.725, 122.800, 122.925,
122.975, 123.000, 123.050, 123.075 - UNICOM frequencies
122.900 - MULTICOM frequency
123.050, 123.075 - Heliports
122.750 - Air to Air Communications
122.975 - Air to Air Communications for high altitudes (airliners)
123.450 - Air to Air Communications (Trans-ocean get together, etc)
121.600 - CAP practice ELT search (under authorized missions only)
121.700, 121.800, 121.900 - Ground control frequencies.
126.200 - Used by Tower at military Airports
136.000 - 138.000 MHz Weather Satellite, Government, Business
138.000 - 144.000 MHz Government (Military Bases)
144.000 - 148.000 MHz Amateur Radio
148.000 - 151.000 MHz Government, CAP, CD, MARS
151.000 - 156.250 MHz Business Band (Police, Fire)
156.250 - 157.425 MHz Marine Band
156.800 Marine Emergency "Guard"
157.450 - 160.200 MHz Business Band (Police, Fire)
160.200 - 161.600 MHz Railroad (161.600 is Marine Band)
161.605 - 161.795 MHz Business Band (Radio and V Remotes)
161.800 - 162.000 MHz Marine Band (Telephone)
162.000 - 174.000 MHz Government, Some Business (Radio and TV Remotes)
This is the common "Government Band", frequency spacing
is typically 12.5 kHz, other users are 5 kHz spacing
NOAA Weather is transmitted on:
162.400, 162.425, 162.450, 162.475, 162.500, 162.525, 162.550
174.000 - 216.000 MHz VHF Television (Ch 7 - 13)
216.000 - 220.000 MHz Maritime Mobile
220.000 - 222.000 MHz Land Mobile Radio
222.000 - 225.000 MHz Amateur Radio
225.000 - 329.000 MHz Government
329.000 - 335.000 MHz Government (Airport Glide Slope Navigation)
335.000 - 400.000 MHz Government
364.200 AICC (Airborne Intercept Control Common)
Many security low power control devices are located in the 225 - 400
band, both civilian and government.
243.000 Emergency Primary "Guard"
282.800 Emergency Secondary "Twenty-Eight Twenty-Eight"
400.000 - 420.000 MHz Government (Base Walkie/Talkies, Pagers, etc)
420.000 - 450.000 MHz Amateur Radio
450.000 - 470.000 MHz Business Band (Police, Fire, Radio and TV Remotes)
470.000 - 890.000 MHz UHF Television (Ch 14 - 83)
(All channels not used anymore, 70 - 83 Obsolete)
806.000 - 810.000 MHz Business Band (Conventional Systems, Mobile Input)
810.000 - 816.000 MHz Public Safety (Slow Growth Systems, Mobile Input)
816.000 - 821.000 MHz Business Band (Trunked Systems, Mobile Input)
821.000 - 825.000 MHz Land Mobile Satellite Service (Mobile Input)
825.000 - 835.000 MHz Cellular Telephone Non-Wireline (Mobile Input)
835.000 - 845.000 MHz Cellular Telephone Wireline (Mobile Input)
845.000 - 850.000 MHz Cellular Telephone (Expansion, Mobile Input)
850.000 - 851.000 MHz Unallocated
851.000 - 855.000 MHz Business Band (Conventional systems, Base Output)
855.000 - 861.000 MHz Public Safety (Slow Growth Systems, Base Output)
861.000 - 866.000 MHz Business Band (Trunked Systems, Base Output)
866.000 - 870.000 MHz Land Mobile Satellite Service (Satellite Output)
870.000 - 880.000 MHz Cellular Telephone Non-Wireline (Base Output)
880.000 - 890.000 MHz Cellular Telephone Wireline (Base Output)
890.000 - 895.000 MHz Cellular Telephone (Expansion, Base Output)
895.000 - 902.000 MHz Land Mobile Radio (Mobile Input)
902.000 - 928.000 MHz Free-For-All, No use near White Sands, and Denver
928.000 - 930.000 MHz Multi-Address Paging
930.000 - 931.000 MHz Advanced Technology Paging
931.000 - 932.000 MHz Common Carrier Paging
932.000 - 935.000 MHz Government/Private Shared
935.000 - 941.000 MHz Land Mobile Radio (Base Output)
941.000 - 944.000 MHz Government/Private Shared
944.000 - 947.000 MHz Broadcast Studio To Transmitter Link
947.000 - 952.000 MHz Broadcast Radio Services
952.000 - 960.000 MHz Microwave Relay and Paging
960.000 -1240.000 MHz TACAN/DME, RADAR/IFF, Government
TACAN has 126 X and 126 Y channels. Normally only X channels
are used, unless crowded. TACAN frequencies are tied to VOR
frequencies. (Note: there are more TACAN frequencies than
VOR frequencies, some are blanked around the ATCRBS Beacon
frequencies, and others are for expansion and military use).
Pulse widths are 3.5 microseconds. Aircraft sounds like a Top
Fuel Dragster or Funny Car when searching for lock-on.
Channel VOR Air Ground
-------------------------------
17X 108.00 1041 978
17Y 108.05 1041 1104
18X 108.10 1042 979
18Y 108.15 1042 1105
19X 108.20 1043 980
19Y 108.25 1043 1106
. . .
58X 112.10 1082 1019
58Y 112.15 1082 1145
59X 112.20 1083 1020
59Y 112.25 1083 1146
. . . (Unused to protect Beacon)
70X 112.30 1094 1157
70Y 112.35 1094 1031 (Unused to protect Beacon)
126X 117.90 1150 1213
126Y 117.95 1150 1087 (Last VOR pairing)
29Y and 92Y Favorites for Military Air Refueling (Air-Air)
Check the heavens if active. All Air-Air pairs are 63 Y apart.
29Y N/A 1053 1116
92Y N/A 1116 1053
Air Traffic Control Radar Beacon System (ATCRBS - "At Crabs",
Secondary Radar - to the British)
1030 MHz Ground Interrogations to Transponder
1090 MHz Transponder Replies to Ground
There are currently five interrogation modes in use:
Mode 1, 2 pulses spaced 3 microseconds [Military]
Mode 2, 2 pulses spaced 5 microseconds [Military]
Mode 3/A, 2 pulses spaced 8 microseconds [Military/Civilian]
Mode 4, encrypted, IFF [Military]
Mode C, 2 pulses spaced 21 microseconds [Military/Civilian]
A third pulse is also included in all modes (except 4) at
2 microseconds from the first. This is the sidelobe pulse.
if it's within @6 dB of the first pulse (or greater) the
transponder doesn't reply (as it has detected an antenna
sidelobe). Pulse widths are .8 microseconds.
The reply is two framing pulses spaced 20.3 microseconds apart,
with 13 code pulses (0000 - 7777 Octal) and an X pulse at the
center which is not used anymore). A fourth pulse (called SPI
pulse (Special Position Identifier) is used to identify your
position when asked by a controller to "Squawk Ident", it is
4.35 microseconds after the last framing pulse and lasts for
20 seconds (about 2 scans of a long range radar). Pulse widths
are .45 microseconds.
1575.42 MHz is the Navstar Global Positioning System (GPS)
frequency L1, and 1227.6 MHz is L2.
1240.000 - 1300.000 MHz Amateur Radio, Government
===============================================================================
--
Dewey Coffman "If you fail to plan, plan to fail."
UUCP: {cs.utexas.edu, bigtex, uudell}!sooner!dewey
Barry Chalcroft
>>
>>My intent is to get a concise list of all local/regional frequencies
>>that can be posted and updated regularly. This list is intended to be
>>a Co-op effort in which corrections and changes can be input by the users
>>for publication in the next edition. Hopefully a quarterly update will
>>suffice. Please EMAIL if you have any ideas, information, etc. Don`t
>>worry about duplicated information, `tis better to have too much info
>>instead of not enough.
>>
>
> It's been done.
>
>> Then he posts:
>
>
> SCANNER SEARCHERS GUIDE...etc.
>
I appreciate this post but *NO* it has not been done, consistantly. The Scanner
Searchers Guide has the *approx* frequency ranges but no specific information on
local/regional frequencies. There have been some efforts at local/regional frequency
lists this such as the (available from me by EMAIL or on the Antenna Farm):
____________________________________________________________________________________
AUSTIN AREA FREQUENCIES list (tm)
Sorted by CITY
Ver 3.0 07/12/91
(copy courtesy of The Antenna Farm BBS and Dan Galewsky)
____________________________________________________________________________________
but note the date of it. I have at least 100+ more frequencies than this list that is
only 9 months old. Stuff like the Round Rock PD 'Tactical/Car to Car' channel, Round
Rock Utilities 'data comm' channel, numerous Bergstrom / USAF military frequencies,
some 800 mhz businesses (trunked), etc. I am *ALWAYS* looking for more. My goal is
to have *TIMELY* and current frequency information for the Austin/Regional area.
As a SWL/HAM/Scanner listener for 25+ years I have found that frequency lists become
outdated as technology, users, etc, changes. They also don't reflect frequencies
found by individuals, cross use freqs (example: an itenerant freq used by the local
PD for surveillance) that are not published by the FCC or hidden underan alias
(example: Police using a Local government frequency). The only way to havea current
*VERIFIED* list is to have users supply input, changes, revisions based on their
scanner experiences.
Thank you Dewey for posting the Scanner Searchers guide (I already had a copy but
I sure many people will find it useful.
73,
Barry D. Chalcroft / N5NWI
Internet: bar...@mpd.tandem.com
Packet: n5nwi@n5ljf
--
******************************************************************************
Barry D. Chalcroft / N5NWI ****** ***** ***** Tandem
Packet: n5...@n5ljf.tx ****** ****** ***** Computers Inc.
Internet: bar...@mpd.tandem.com ****** **** *** ***** Austin, TX
Mark Brown
Go to Radio Shack.
Get their Police/Fire scanner book.
While it's not compeltely up-to-date, it's *really* close, and a good starter
book. I found out that it's accurate for such things as Travis County
Volunteer FD channels, for instance.
cheers,
mark
--
Mark Brown IBM PSP Austin, TX.| I believe in the richness and mystery
(512) 838-3926 VNET: MBROWN@AUSVMQ| of the universe, but I don't
MAIL: mbr...@testsys.austin.ibm.com | believe in the supernatural. -Simmons
DISCLAIMER: My views may be, and often are, independent of IBM official policy.
Allen Kitchen
>
>Go to Radio Shack.
> Get their Police/Fire scanner book.
>(512) 838-3926 VNET: MBROWN@AUSVMQ| of the universe, but I don't
>MAIL: mbr...@testsys.austin.ibm.com | believe in the supernatural. -Simmons
With a little more detail...
The stores I have worked at keep an up to date list of local freqs
that they will let you write down and keep, without charging you for the
book (which many people use maybe 1/1000 of). They do ask that you bring
your own paper though. I usually photocopy sets for people that buy scanners
from me. I try to go one step extra for my customers. Go to the Radio Shack
on North Lamar and Rundberg (north part of town) and ask to get the local
frequencies from their list. My name is Allen, and I usually work Thurs,Fri,
Sat evenings.
Also, if anyone knows some decent parttime positions that are open
for a hardworking student with a good technical background (before RS) please
let me know...
Allen Kitchen
ifa...@ccwf.cc.utexas.edu
practic...@gmail.com
IF you have a visual has a monitor of these frequencies, would you consider showing me so I can learn what I am seeing. practic...@gmail.com