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- Radio Frequencies of Interest
- to Telephone Experimenters
- by THE RESEARCHER
- (Updated 03/01/87)
-
- Be advised that since I originally wrote this article, a new Electronic
- Communications Privacy Act (ECPA) has been passed by that mistress of Big
- Money, the U.S. Congress. It is now illegal to monitor cellular or conventional
- mobile telephone calls.
-
- A lot of technically oriented telephone experimenters are finding out
- about an exiting world of telephone activity in the radio spectrum. Most of you
- are probably acquainted with mobile telephone channels in the VHF band and know
- that these conversations can be monitored. Frequencies have been allocated in
- the VHF and UHF bands for use by land mobile, marine and air-ground stations.
- Another fascinating group of frequencies are the high seas channels in the high
- frequency short wave band. I have spent many hours listening to ship to shore
- telephone calls from ocean liners on the Atlantic.
- Scanner radios are used to monitor the VHF/UHF channels. To listen to the
- high seas channels you will need a short wave receiver capable of copying
- single sideband transmissions. Nearly all high seas calls are transmitted on
- upper sideband.
- The new cellular telephone channels lie between 825-845 MHz and 870-890
- MHz. There are 666 of these spaced 30 kHz apart. I am aware of three
- manufacturers who make scanners capable of receiving these frequencies.
- They are ICOM America (IC-R7000), Yaesu Electronics Corp. (FRG-9600) and Ace
- Communications (AR-2002). Ads for all these can be found in "Popular
- Communications". These are professional quality communications receivers and
- are expensive. There are converters available from Hamtronics, inc. and others
- which permit most scanners to tune these frequencies. Hamtronics' address
- is 65-B Moul Road, Hilton, NY 14468-9535. Phone: 716-392-9430. The cost is
- $88.00 plus $3.00 shipping and handling.
-
- Mobile Telephone Frequencies
- VHF Low Band (Freq. in MHz)
-
- Channel Base Mobile
- ------- ---- ------
- ZO 35.26 43.26
- ZF 35.30 43.30
- ZH 35.34 43.34
- ZM 35.38 43.38
- ZA 35.42 43.42
- ZY 35.46 43.46
- ZR 35.50 43.50
- ZB 35.54 43.54
- ZW 35.62 43.62
- ZL 35.66 43.66
- ---------------------------
- VHF High Band
-
- JL 152.51 157.77
- YL 152.54 157.80
- JP 152.57 157.83
- YP 152.60 157.86
- YJ 152.63 157.89
- YK 152.66 157.92
- JS 152.69 157.95
- YS 152.72 157.98
- YR 152.75 158.01
- JK 152.78 158.04
- JR 152.81 158.07
- ---------------------------
- Marine Telephone
-
- 24 157.2 161.8
- 84 157.225 161.825
- 25 157.25 161.85
- 85 157.275 161.875
- 26 157.3 161.9
- 86 157.325 161.925
- 27 157.35 161.95
- 87 157,375 161.975
- 28 157.4 162.0
- ----------------------------
- UHF Band
-
- QC 454.375 459.375
- QJ 454.4 459.4
- QD 454.425 459.425
- QA 454.45 459.45
- QE 454.475 459.475
- QP 454.5 459.5
- QK 454.525 459.525
- QB 454.55 459.55
- QO 454.575 459.575
- QR 454.6 459.6
- QY 454.625 459.625
- QF 454.65 459.65
- ----------------------------
- Air-Ground Stations
-
- Channel Ground Airborne
-
- 1 454.95 459.95
- 2 454.9 459.9
- 3 454.85 459.85
- 4 454.8 459.8
- 5 454.75 459.75
- 6 454.7 459.7
- 7 454.725 459.725
- 8 454.775 459.775
- 9 454.825 459.825
- 10 454.875 459.875
- 11 454.925 459.925
- 12 454.975 459.975
- Signaling 454.675
- ---------------------------
- The following is a list of the channels used for high seas phone calls.
- As a rule, the 4 MHz band comes in best at night while the higher channels are
- best received during daylight hours. All frequencies are in kilohertz.
-
- (Editorial Note From Scan_Man: These frequencies have been monitored by phreaks
- for the purpose of getting calling card numbers. Since the person making the
- call must pay for it, its either cash (not in most cases) or most likely a
- calling card. In the case of the calling card, the ship operator must read
- the calling card number over the air to the coastal operator. Im surprised
- more people havnt thought of this)!
-
-
- Channel Ship Coast
- -------
- ---- -----
- 401 4063.0 4357.4
- 402 4066.1 4360.5
- 403 4069.2 4363.6
- 404 4072.3 4366.7
- 405 4075.4 4369.8
- 406 4078.5 4372.9
- 407 4081.6 4376.0
- 408 4084.7 4379.1
- 409 4087.8 4382.2
- 410 4090.9 4385.3
- 411 4094.0 4388.4
- 412 4097.1 4391.5
- 413 4100.2 4394.6
- 414 4103.3 4397.7
- 415 4106.4 4400.8
- 416 4109.5 4403.9
- 417 4112.6 4407.0
- 418 4115.7 4410.1
- 419 4118.8 4413.2
- 420 4121.9 4416.3
- 421 4125.0 4419.4
- 422 4128.1 4422.5
- 423 4131.2 4425.6
- 424 4134.3 4428.7
- 425 4237.4 4431.8
- 426 4140.5 4434.9
- --------------------------
- 801 8195.0 8718.9
- 802 8198.1 8722.0
- 803 8201.2 8725.1
- 804 8204.3 8728.2
- 805 8207.4 8731.3
- 806 8210.5 8734.4
- 807 8213.6 8737.5
- 808 8216.7 8740.6
- 809 8219.8 8743.7
- 810 8222.9 8746.8
- 811 8226.0 9749.9
- 812 8229.1 8753.0
- 813 8232.2 8756.1
- 814 8235.3 8759.2
- 815 8238.4 8762.3
- 816 8241.5 8765.4
- 817 8244.6 8768.5
- 818 8247.7 8771.6
- 819 8250.8 8774.7
- 820 8253.9 8777.8
- 821 8257.0 8780.9
- 822 8260.1 8784.0
- 823 8263.2 8787.1
- 824 8266.3 8790.2
- 825 8269.4 8793.3
- 826 8272.5 8796.4
- 827 8275.6 8799.5
- 828 8278.7 8802.6
- 829 8281.8 8805.7
- 830 8284.9 8808.8
- 831 8288.0 8811.9
- --------------------------
- 1201 12330.0 13100.8
- 1202 12333.1 13103.9
- 1203 12336.2 13107.0
- 1204 12339.3 13110.1
- 1205 12342.4 13113.2
- 1206 12345.5 13116.3
- 1207 12348.6 13119.4
- 1208 12351.7 13122.5
- 1209 12354.8 13125.6
- 1210 12357.9 13128.7
- 1211 12361.0 13131.8
- 1212 12364.1 13134.9
- 1213 12367.2 13138.0
- 1214 12370.3 13141.1
- 1215 12373.4 13144.2
- 1216 12376.5 13147.3
- 1217 12379.6 13150.4
- 1218 12382.7 13153.5
- 1219 12385.8 13156.6
- 1220 12388.9 13159.7
- 1221 12392.0 13162.8
- 1222 12395.1 13165.9
- 1223 12398.2 13169.0
- 1224 12401.3 13172.1
- 1225 12404.4 13175.2
- 1226 12407.5 13178.3
- 1227 12410.6 13181.4
- 1228 12413.7 13184.5
- 1229 12416.8 13187.6
- 1230 12419.9 13190.7
- 1231 12423.0 13193.8
- 1232 12426.1 13196.9
- --------------------------
- New Chordless Telephone
- Frequencies in MHz
-
- Channel Base Handset
- ------- ---- -------
- 1 46.61 49.670
- 2 46.63 49.845
- 3 46.67 49.860
- 4 46.71 49.770
- 5 46.73 49.875
- 6 46.77 49.830
- 7 46.83 49.890
- 8 46.87 49.930
- 9 46.93 49.990
- 10 46.97 49.970
-
- Old Chordless Telephone
- Frequencies
-
- 1 1705 49.830
- 2 1735 49.845
- 3 1765 49.860
- 4 1795 49.875
- 5 1825 49.890
-