UHF-SatCom frequencies (Atlantic-ocean Region).
Transponder spectrum plots have been produced to show the actual
bandwidth of the transponder as received. Click on each plot for a higher
resolution version. The plots were made with an
RF-Space SDR-14 software
defined radio, being fed a 10.7MHz IF from a communications receiver. If
there are specific transponders that are missing from this list that should
be included, please drop us a line and we'll make an FFT and add it to this
page.
| Downlink Freq | Uplink Freq | Satcom channel plan | Notes | Transponder spectrum plot |
| 243.800 | - | - | Waterdrops |
|
| 243.995 | 317.095 | A20 O19 |
|
|
| 244.005 | 317.105 | O20 |
|
|
| 244.015 | 317.115 | O21 |
|
|
| 244.025 | 317.125 | O22 |
|
|
| 244.035 | 317.135 | O23 |
|
|
| 244.045 | 317.145 | B11 O24 |
|
|
| 244.055 | 317.155 | B12 O25 |
|
|
| 244.065 | 317.165 | B14 O26 | fsk data. |
|
| 244.075 | 317.175 | B16 P19 | fsk data. |
|
| 244.085 | 317.185 | B18 P20 |
|
|
| 244.095 | 317.195 | B20 P21 |
|
|
| 244.105 | 317.205 | P22 | unid. radio station. | |
| 244.115 | 317.215 | P23 | ||
| 244.125 | 317.225 | P24 | ||
| 244.135 | 317.235 | P25 | ||
| 244.145 | 317.245 | C11 P26 | ||
| 248.975 | 302.575 | G6 O27 |
|
|
| 248.985 | 302.585 | O28 |
|
|
| 248.995 | 302.595 | O29 |
|
|
| 249.005 | 302.605 | O30 |
|
|
| 249.015 | 302.615 | O31 |
|
|
| 249.025 | 302.625 | G8 O32 |
|
|
| 249.035 | 302.635 | O33 |
|
|
| 249.045 | 302.645 | O34 |
|
|
| 249.055 | 302.655 | O35 |
|
|
| 249.065 | 302.665 | O36 |
|
|
| 249.075 | 302.675 | G10 O37 |
|
|
| 249.085 | 302.685 | O38 |
|
|
| 249.095 | 302.695 | O39 |
|
|
| 249.105 | 302.705 | P27 |
|
|
| 249.115 | 302.715 | P28 |
|
|
| 249.125 | 302.725 | G12 P29 |
|
|
| 249.135 | 302.735 | P30 |
|
|
| 249.145 | 302.745 | P31 |
|
|
| 249.155 | 302.755 | P32 |
|
|
| 249.165 | 302.765 | P33 |
|
|
| 249.175 | 302.775 | G14 P34 |
|
|
| 249.185 | 302.785 | P35 |
|
|
| 249.195 | 302.795 | P36 |
|
|
| 249.205 | 302.805 | P37 |
|
|
| 249.215 | 302.815 | P38 |
|
|
| 249.225 | 302.825 | G16 P39 |
|
|
| 250.450 | SHF | A1 O1 | Fleet Broadcast (Data). |
|
| 250.550 | SHF | B1 P1 | Fleet Broadcast (Data). |
|
| 250.600 | SHF | Wideband Data. |
|
|
| 251.325 | - | - | Spread spectrum or PSK data. |
|
| 251.700 | - | - | Spread spectrum or PSK data. |
|
| 251.950 | 292.950 | A2 O2 |
|
|
| 252.050 | 293.050 | B2 P2 | Wolfden & Wolfgang units in the clear |
|
| 253.650 | 294.650 | A3 O3 |
|
|
| 253.750 | 294.750 | B3 P3 |
|
|
| 253.950 | 307.550 | Italian Navy and unid. Spanish radio station. |
|
|
| 254.100 | 307.700 | Super Radio from Colombia. |
|
|
| 255.350 | 296.350 | A4 O4 |
|
|
| 255.450 | 296.450 | B4 P4 |
|
|
| 256.950 | 297.950 | A5 O5 |
|
|
| 257.050 | 298.050 | B5 P5 |
|
|
| 257.450 | 311.050 |
|
||
| 257.600 | 311.200 | unid. radio station. |
|
|
| 258.450 | 299.450 | A6 O6 |
|
|
| 258.550 | 299.550 | A6 O6 | ||
| 258.775 | - | - | Spread spectrum or PSK data. |
|
| 260.425 | 294.025 | A23-4 P11 |
|
|
| 260.525 | 294.125 | A23-8 P12 |
|
|
| 260.575 | 294.175 | A23-10 O11 |
|
|
| 260.675 | 294.275 | A23-14 O12 |
|
|
| 261.400 | 295.000 | xx |
|
|
| 261.425 | 295.025 | xx |
|
|
| 261.450 | 295.050 | B23-1 |
|
|
| 261.475 | 295.075 | B23-2 |
|
|
| 261.500 | 295.100 | B23-3 |
|
|
| 261.525 | 295.125 | B23-4 |
|
|
| 261.550 | 295.150 | B23-5 |
|
|
| 261.575 | 295.175 | B23-6 N13 |
|
|
| 261.600 | 295.200 | B23-7 | frequent piccolo type data (USB). |
|
| 261.625 | 295.225 | B23-8 P13 |
|
|
| 261.650 | 295.250 | B23-9 |
|
|
| 261.675 | 295.275 | B23-10 N14 |
|
|
| 261.700 | 295.300 | B23-11 |
|
|
| 261.725 | 295.325 | B23-12 P14 |
|
|
| 261.750 | 295.350 | B23-13 |
|
|
| 261.775 | 295.375 | B23-14 N15 |
|
|
| 261.800 | 295.400 | B23-15 | King 4 & 5 - Used during shuttle launches. |
|
| 261.825 | 295.425 | B23-16 P15 |
|
|
| 261.850 | 295.450 | B23-17 |
|
|
| 261.875 | 295.475 | B23-18 N16 |
|
|
| 261.900 | 295.500 | B23-19 |
|
|
| 261.925 | 295.525 | B23-20 P16 |
|
|
| 261.950 | 295.550 | B23-21 |
|
|
| 262.175 | - | - |
|
|
| 262.275 | - | - |
|
|
| 262.375 |
|
|||
| 263.625 | 297.225 | W2-4 P17 | Spread spectrum or PSK data. |
|
| 263.725 | 297.325 | W2-8 P18 |
|
|
| 263.775 | 297.375 | W2-10 O17 |
|
|
| 263.875 | 297.475 | W2-14 O18 |
|
|
| 265.350 | 306.350 | A7 O7 |
|
|
| 265.450 | 306.450 | B7 P7 |
|
|
| 266.850 | 307.850 | A8 O8 |
|
|
| 266.950 | 307.950 | B8 P8 | relay of Russian phone system. |
|
| 268.250 | 309.250 | A9 O9 |
|
|
| 268.350 | 309.350 | B9 P9 | relay of Russian phone system. |
|
| 268.675 | - | - | Spread spectrum or PSK data. |
|
| 269.750 | 310.750 | A10 O10 |
|
|
| 269.850 | 310.850 | B10 P10 |
|