AIRFONE FREQUENCIES
                          -------------------


 Copied by: John Johnson, KWV8BP
 Source: Monitor America


 On October 15, 1984, Airfone, Inc. began to offer air-to-ground telephone
 service for commercial airline passengers. Using special cordless Tele-
 phones which accept standard credit cards, the system offers three-minute
 calls for a minimum charge of $750. A network of ground stations carries
 the transmissions; computer control "hands off" calls from one gound
 station to another as airliners move in & out of range. Thirty-two channels
 are assigned to each transmission site, following the same pattern in each
 case except for the lowest frequency assigned. All stations transmit on AM
 single sideband (A3A).


 Transmitter Sites   Frequency Begin  Transmitter Sites   Frequency Begins
 -----------------   ---------------  -----------------   ----------------

  Abajo Peak, UT       945.204         Las Vegas, NV        945.404
  Albuquerque, NM      945.804         Los Angeles, CA      944.604
  Atlanta, GA          945.404         Meridian, MS         945.604
  Austin, TX           944.204         Miami, FL            944.404
  Boston, MA           945.204         Monahans, TX         945.004
  Bridgeton, MO        944.604         Nashville, TN        944.404
  Burlingame, CA       945.204         New Orleans, LA      945.004
  Charleston, SC       944.604         Orlando, FL          945.004
  Charleston, WV       944.204         Phoenix, AZ          944.804
  Chicago, IL          945.804         Pittsburgh, PA       944.804
  Delta, UT            944.204         Seattle, WA          944.604
  Denver, CO           944.604         Shreveport, LA       945.804
  Des Moines, IA       944.204         Springfield, MO      945.404
  Fort Wayne, IN       945.204         Tallahassee, FL      944.804
  Grand Island, NE     944.404         United States        899.000
  Hawthorne, NV        945.604         (Nationwide Channel)
  Houston, TX          945.404         Washington, DC       944.604
  Irving, TX           944.804         Wilmington, NC       945.204
  Jamaica, NY          945.204         Woodward, OK         945.604
  Klamath Falls, OR    945.884


                               Channeling Plan

Channels are separated by 6 KHz except for the last channel assigned to each
location, which is 10 KHz higher than the preceding channel. For example, if
the first channel in a group is 944.204, the sequence would be:


   944.204   944.210   944.216   944.222   944.228   944.234   944.240
   944.246   944.252   944.258   944.264   944.270   944.276   944.282
   944.288   944.294   944.300   944.306   944.312   944.318   944.324
   944.330   944.336   944.342   944.348   944.354   944.360   944.366
   944.342   944.348   944.354   944.360   944.366   944.372   944.378
   944.384   944.394



                      Aircraft Mobile Telephone Channels
                      ----------------------------------


     Calling  454.675      5        454.750       9        454.825

     1        454.950      6        454.700      10        454.875
     2        454.900      7        454.725      11        454.925
     3        454.850      8        454.775      12        454.975
     4        454.800


 I read some where, not too long back, todays date is 8/89 that the Airfone
 900.0 frequencies were to be moved to another channel plan, if anyone has
 information on any updates to this please let me know.

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