I received an excellent UHF milsat bandscan report from Barney Hamlin, a neighbor to my south in the great state of Georgia. Thanks Barney.
I encourage each of you reading this report to take a swing through the UHF Milsat subband (240-270 MHz) and let us know what you are hearing like Barney did. I am especially interested in reports from outside the U.S. You can send your reports to me at the address in the masthead. If you wish to remain anonymous, I will honor those request as well, but please include your location. This is important, as well as antenna look angles, to help sort which birds you are hearing.
Thanks again Barney.
-------------------
UHF Milsat List from Barney Hamlin – Fitzgerald, Georgia
AR 8600 MKII with a Create Log Periodic and Ramsey wideband preamp.
Eastern Atlantic/CONUS Milsats
Fleetsatcom (F8-22.7W\F7-99.9W)
UHF Follow On (F3-11W\F9-12W)
Skynet (4D-34W)
Marisat 1 (104.7W)
DSCS-3 B11 (12W)
Note: Frequency in MHz. Mode is NFM unless otherwise listed.
UHF Milsat List from Barney Hamlin – Fitzgerald, Georgia
AR 8600 MKII with a Create Log Periodic and Ramsey Wideband preamp.
Eastern Atlantic Sats\ CONUS Sats
(Mode is NFM unless otherwise listed.)
Fleetsatcom (F8-22.7W\F7-99.9W), UHF Follow On (F3-11W\F9-12W), Skynet (4D-34W), Marisat 1 (104.7W), DSCS-3 B11 (12W)
243.6300 – Data (Weak)
243.6950 – RATT
243.6950 – DSCS-3 B11 Transponder-RATT (Weak)
243.7030 – RATT
243.7030 – RATT (Weak)
243.7050 – RATT
243.7050 – DSCS-3 B11 Transponder-RATT (Weak)
243.7100 – RATT
243.7100 – DSCS-3 B11 Transponder
243.7130 – RATT
243.7130 – RATT (Weak)
243.7150 – RATT
243.7150 – DSCS-3 B11 Transponder-RATT (Weak)
243.7180 – RATT
243.7180 – RATT (Weak)
243.7200 – RATT
243.7200 – DSCS-3 B11 Transponder-RATT (Weak)
243.7225 – RATT
243.7225 – RATT (Weak)
243.7250 – RATT
243.7250 – DSCS-3 B11 Transponder-RATT (Weak)
243.7275 – RATT
243.7275 – RATT (Weak)
243.7300 – RATT
243.7300 – Skynet Transponder-RATT (Weak)
243.7325 – RATT
243.7325 – RATT (Weak)
243.7350 – RATT
243.7350 – DSCS-3 B11 Transponder-RATT (Weak)
243.7375 – RATT (Weak)
243.7400 – DSCS-3 B11 Transponder-RATT (Weak)
243.7425 – RATT
243.7425 – RATT (Weak)
243.7450 – DSCS-3 B11 Transponder-RATT (Weak)
243.7475 – RATT
243.7475 – RATT (Weak)
243.7500 - RATT
243.7500 – DSCS-3 B11 Transponder-RATT (Weak)
243.7575 – RATT (Weak)
243.7600 – DSCS-3 B11 Transponder-RATT (Weak)
243.7900-.8450 – Frequency Hopping
243.7900-.8450 – Frequency Hopping
243.8550 – Carrier (Weak)
243.8960 – Carrier
243.9125 – Wideband Data
243.9150 – UHF Follow On Transponder
243.9225 – Wideband Data
243.9250 – UHF Follow On Transponder
243.9325 – Wideband Data
243.9350 – UHF Follow On Transponder
243.9425 – Wideband Data
243.9450 – Fleetsatcom Transponder
243.9525 – Wideband Data
243.9550 – Fleetsatcom Transponder
243.9600 – Fleetsatcom Transponder
243.9625 – Wideband Data
243.9640 – USB-Data Bursts
243.9640 – Data Bursts
243.9650 – Fleetsatcom Transponder
243.9700 – Fleetsatcom Transponder
243.9725 – Wideband Data
243.9750 – Fleetsatcom Transponder
243.9800 – Fleetsatcom Transponder
243.9810 – Warbling Carrier
243.9825 – Wideband Data
243.9850 – Fleetsatcom Transponder-Data (Weak)
243.9900 – Fleetsatcom Transponder
243.9950 – Fleetsatcom Transponder
244.0000 – Fleetsatcom Transponder
244.0025 – FM Radio Harmonic (Spanish)
244.0050 – UHF Follow On Transponder-Encrypted voice
244.0225 – Wideband Data
244.0250 – UHF Follow On Transponder-Data
244.0325 – Wideband Data
244.0340 – Data Bursts
244.0350 – UHF Follow On Transponder-Encrypted Data\Voice
244.0450 – UHF Follow On Transponder
244.0525 – Wideband Data or voice
244.0540 – Data Bursts
244.0550 – UHF Follow On Transponder-Encrypted voice.
244.0650 – UHF Follow On Transponder
244.0750 – UHF Follow On Transponder-Encrypted Data\voice
244.0850 – UHF Follow On Transponder-Encrypted Data\voice
244.0940 – Data Bursts, longer duration Bursts, stronger signal.
244.0940 – Data Bursts, longer duration Bursts, stronger signal.
244.0950 – UHF Follow On Transponder
244.0100 – Fleetsatcom Transponder
244.0150 – UHF Follow On Transponder
244.0250 – Data Bursts, digitally encrypted voice (USB)
244.0450 – Fleetsatcom Transponder
244.0550 – Fleetsatcom Transponder-Digitally encrypted voice
244.0600 – Fleetsatcom Transponder
244.0650 – Fleetsatcom Transponder
244.0700 – Fleetsatcom Transponder
244.0750 – Fleetsatcom Transponder-Data Bursts
244.0800 – Fleetsatcom Transponder
244.0850 – Fleetsatcom Transponder-FM radio harmonic interference.
244.0900 – Fleetsatcom Transponder
244.0940 – USB–Data Bursts
244.0950 – Fleetsatcom Transponder
244.0990 – Warbling tone
244.1000 – Fleetsatcom Transponder-Warbling tone
244.1070 – Warbling tone
244.1100 – Fleetsatcom Transponder-Data (Weak)
244.1250 – Encrypted digital voice, very active
244.1350 – Data
244.1450 – Fleetsatcom Transponder-Data
244.1484 – RATT 3200 Hz shift strong signal (only on for brief transmission)
244.1490 – RATT and also LSB voice (very weak)
244.1550 – Wideband Data
244.1550 – Fleetsatcom Transponder-Encrypted Data
244.1600 – Fleetsatcom Transponder
244.1650 – Wideband Data
244.1650 – Fleetsatcom Transponder-Encrypted Data
244.1700 – Fleetsatcom Transponder
244.1750 – Wideband Data
244.1750 – Fleetsatcom Transponder-Encrypted Data
244.1800 – Fleetsatcom Transponder
244.1850 – Wideband Data-Occasional RTTY (very wide shift–approximately 3500hz)
244.1850 – Fleetsatcom Transponder-Encrypted Data
244.1900 – Fleetsatcom Transponder
244.1950 – Wideband Data
244.1950 – Fleetsatcom Transponder-Encrypted Data
244.2000 – Fleetsatcom Transponder
244.2050 – Wideband Data
244.2050 – UHF Follow On Transponder-Encrypted Data
244.2100 – Fleetsatcom Transponder
244.2150 – UHF Follow On Transponder-Encrypted Data and Wideband Data
244.2250 – Wideband Data
244.2250 – UHF Follow On Transponder-Encrypted Data
244.2290 – Carrier
244.2350 – UHF Follow On Transponder
244.2400 – Carrier–beacon?
248.0650 – Local RFI
248.8450 – Wideband Data
248.8450 – UHF Follow On Transponder-Data
248.8500 – Marisat Transponder
248.8550 – Wideband Data
248.8550 – UHF Follow On Transponder-Data
248.8650 – Wideband Data
248.8650 – UHF Follow On Transponder-Encrypted voice
248.8750 – Wideband Data
248.8750 – UHF Follow On Transponder-Data
248.8850 – Wideband Data
248.8850 – UHF Follow On Transponder-Data
248.8950 – Wideband Data
248.8950 – UHF Follow On Transponder
248.9000 – Marisat Transponder-Warbling Carrier
248.9025 – Wideband Data
248.9125 – Wideband Data
248.9225 – Wideband Data
248.9250 – Marisat Transponder
248.9050 – UHF Follow On Transponder
248.9150 – UHF Follow On Transponder
248.9250 – UHF Follow On Transponder
248.9325 – Wideband Data
248.9350 – UHF Follow On Transponder
248.9425 – Wideband Data or voice
248.9450 – UHF Follow On Transponder-Encrypted voice
248.9500 – Marisat Transponder
248.9525 – Wideband Data
248.9550 – UHF Follow On Transponder
248.6925 – Wideband Data
248.9650 – UHF Follow On Transponder
248.9750 – UHF Follow On Transponder-USB and Unusual Data Transmissions
248.9850 – UHF Follow On Transponder
248.9875 – Telcom Russian (Weak)
248.9970 – USB–CW strong chirping (Sloppy transmission)
249.0000 – Marisat Transponder
249.0050 – UHF Follow On Transponder
249.0115 – Telcom Russian (Weak)
249.0150 – UHF Follow On Transponder-Telcom Russian (Weak)
249.0250 – UHF Follow On Transponder-Telcom Russian (Weak)
249.0350 – UHF Follow On Transponder-Telcom Russian (Weak)
249.0450 – UHF Follow On Transponder
249.0500 – Marisat Transponder
249.0540 – USB–Data Bursts
249.0550 – UHF Follow On Transponder
249.0650 – UHF Follow On Transponder-Telcom Russian Dialing (Weak)
249.0750 – UHF Follow On Transponder-Telcom Russian
249.0850 – UHF Follow On Transponder-Telcom Russian
249.0950 – Carrier
249.0950 – UHF Follow On Transponder
249.1000 – Marisat Transponder
249.1040 – USB–Data Bursts.
249.1050 – UHF Follow On Transponder-Digitally encrypted voice
249.1116 – USB voice
249.1125 – Wideband Data-Warbling tone
249.1150 – UHF Follow On Transponder-Telcom Russian (Weak)
249.1225 – Wideband Data
249.1240 – Data Bursts
249.1250 – UHF Follow On Transponder-Telcom Russian (Weak)
249.1325 – Wideband Data
249.1350 – UHF Follow On Transponder-Telcom Russian (Weak)
249.1425 – Wideband Data
249.1440 – Data Bursts, similar to ax.25 protocol
249.1440 – Data Bursts, similar to ax.25 protocol
249.1450 – UHF Follow On Transponder
249.1500 – Marisat Transponder
249.1525 – Wideband Data
249.1540 – Data Bursts
249.1550 – UHF Follow On Transponder
249.1625 – Wideband Data
249.1650 – UHF Follow On Transponder-Telcom Russian (Weak)
249.1750 – Carrier
249.1750 – UHF Follow On Transponder-Telcom Russian (Weak) and digitally encrypted voice
249.1850 – UHF Follow On Transponder
249.1925 – Wideband Data
249.1950 – UHF Follow On Transponder
249.1950 – FM Radio Harmonic
249.2000 – Marisat Transponder
249.2025 – Wideband Data
249.2050 – UHF Follow On Transponder
249.2050 – Data
249.2125 – Wideband Data
249.2150 – UHF Follow On Transponder-Telcom Russian
249.2150 – Data
249.2225 – Wideband Data
249.2240 – Data Bursts
249.2250 – UHF Follow On Transponder-Encrypted voice
249.2250 – Data
249.2325 – Wideband Data
249.2350 – UHF Follow On Transponder
249.2350 – Data
249.2425 – Wideband Data
249.2450 – UHF Follow On Transponder
249.2450 – Data
249.2500 – Marisat Transponder
249.2525 – Wideband Data
249.2550 – UHF Follow On Transponder-Encrypted voice
249.2550 – Encrypted voice
249.2650 – UHF Follow On Transponder
249.2625 – Wideband Data
249.2650 – Data
249.2725 – Wideband Data
249.2750 – UHF Follow On Transponder-Telcom Russian
249.2750 – Data
249.2825 – Wideband Data
249.2850 – UHF Follow On Transponder-Data or voice encryption
249.2850 – Data
249.2925 – Wideband Data
249.2950 – UHF Follow On Transponder
249.2950 – Data and FM radio harmonic
249.3000 – Marisat Transponder
249.3025 – Wideband Data
249.3040 – Data Bursts
249.3040 – Data Bursts
249.3050 – UHF Follow On Transponder
249.3050 – Data
249.3125 – Wideband Data
249.3150 – UHF Follow On Transponder
249.3150 – Data
249.3225 – Wideband Data
249.3250 – UHF Follow On Transponder
249.3250 – Data
249.3325 – Wideband Data
249.3350 – UHF Follow On Transponder-Encrypted voice
249.3350 – Data
249.3425 – Wideband Data
249.3450 – UHF Follow On Transponder
249.3450 – Data
249.3525 – Wideband Data
249.3550 – UHF Follow On Transponder-FM Radio Harmonic
249.3550 – Data
249.3600 – Carrier
249.3900 – Encrypted voice
249.7350 – Carrier and FM Radio Harmonic
249.7525 – Carrier
249.8550 – Beacon?
250.0750 – Data
250.0750 – Data
250.0965 – Carrier
250.1950 – Carrier
250.3500 – Fleetsatcom Transponder-Data (strong signal)
250.3500 – Fleetsatcom Wideband Data
250.3850 – Carrier
250.3850 – Carrier
250.4500 – UHF Follow On Transponder
250.5500 – Fleetsatcom Transponder-Wideband Data
250.5500 – Fleetsatcom Transponder-Wideband Data
250.6050 – USB–Carrier
250.6500 – Wideband Data
250.6500 – Fleetsatcom Transponder-Wideband Data
250.6650 – Carrier
250.8775 – Carrier
251.1925 – USB-? brief transmission of some sort
251.3125 – Data
251.3175 – Data
251.3250 – Wideband Data
251.3250 – Data
251.3325 – Data
251.5400 – Carrier
251.7000 – Data
251.7000 - Data
251.8500 – UHF Follow On Transponder (25 kHz)
251.8475 – Wideband Data
251.8500 – Data
251.9000 – USB–Carrier
251.9500 – Fleetsatcom Transponder (25 kHz)-Wideband Data
251.9500 – Wideband Data
252.0500 – Fleetsatcom Transponder (25 kHz)
- ITC English
- Two stations believed to be in Europe. No longer active?
- Portuguese, usually two or three stations (Unusually strong signal)
- Wideband Data
252.1500 – Fleetsatcom Transponder (25 kHz)-Wideband Data
252.1500 – Wideband Data
253.0600 – Carrier
253.2280 – Carrier
253.4475 – Carrier
253.4550 – Carrier (Weak)
253.4590 – Carrier, being switched on and off. Strong. Would fade to about half strength at times.
253.5090 – Carrier
253.5250 – Carrier (Weak)
253.5325 – Data
253.5375 – USB-Data and single tone every 10 seconds.
253.5375 – USB-Data and single tone every 10 seconds.
253.5500 – Transponder (25 kHz)-Wideband transmission (Weak)
253.5500 – Wideband Data
253.5600 – USB–Data (Weak)
253.6250 – USB–Data
253.6500 – Fleetsatcom Transponder (25 kHz)
- Portuguese, two stations
- Wideband Data
253.6500 – Wideband Data, encrypted voice
- fm voice transmissions, not digitally encrypted, heavily distorted. two stations
253.6600 – Portuguese, two stations
253.7375 – Portuguese, two stations (Full quieting)
253.7400 – Portuguese, two stations (Full quieting)
253.7500 – Fleetsatcom Transponder (25 kHz)-Telcom (Weak) and also Warbling Carrier at times.
253.7600 – Portuguese, four stations (Strong) and sometimes with speech inversion.
253.8000 – Skynet Transponder
253.8500 – Fleetsatcom Transponder (25 kHz)-Wideband Data
253.8500 – Wideband Data
253.9125 – Data
253.9225 – Carrier
253.9375 – Telcom Russian (Moderate/strong signals)
253.9424 – USB pulse transmission very similiar to FAX and very regular
253.9500 – Skynet Transponder-Italian Navy two stations. ITC voice and encrypted Data (Stanag 4285@1200 baud) now inactive since they moved to SICRAL satellite channels
253.9550 – Carrier (Weak)
253.9600 – Telcom Russian (Moderate signal)
253.9625 – Telcom Russian (Weak/Moderate signals)
254.0090 – Carrier
254.0225 – Carrier
254.0500 – Skynet Transponder
254.0525 – Carrier
254.0575 – Carrier
254.0885 – Telcom Russian (Moderate signal)
254.0900 – Telcom Russian (Weak)
254.1000 – Skynet Transponder-Super Radio FM Bogotá harmonic
254.1000 – FM Radio Harmonic.
254.1130 – Telcom Russian
254.1215 – Carrier
254.1385 – Telcom Russian
254.1500 – Skynet Transponder
254.2000 – Skynet Transponder
- AM Aircraft (Moderate signal)
- LSB
– Test transmission from Freddy
254.6150 – Carrier (Weak)
254.7300 – Carrier
254.9550 – Wideband transmission (Weak)
254.9815 – Carrier (Slight Warble)
255.0075 – Carrier
255.2350 – Carrier
255.2500 – UHF Follow On Transponder (25 kHz)-Data, Warbling Carrier
255.2500 – Warbling Carrier (Strong) Data bursts just like 269.7500. Except more frequent bursts
255.3350-3650 – Wideband transmission
255.3450 – Wideband data
255.3500 – Portuguese two stations, weak
255.3500 – Fleetsatcom Transponder (25 kHz)
- Telcom Russian (Weak)
- Portuguese two staions (Strong)
255.4500 – Fleetsatcom Transponder (25 kHz)
- Telcom (Weak) Dialing possibly Spanish voice
- Wideband Data
255.5075 – Carrier
255.5500 – Fleetsatcom Transponder (25 kHz)-Telcom Portuguese. Carrier tends to vary (Strong)
255.5500 – Wideband Data
255.5547 – Unstable Carrier.
255.5600 – Portuguese two stations (Moderate)
256.0575 – Data
256.3750 – Data, possibly HEO satellite in a Molniya type orbit
256.3950 - Carrier
256.4750 – Data
256.4750 – Data
256.8500 – UHF Follow On Transponder (25 kHz)-Portuguese. Usually two stations (Moderate to strong signals), also some USB activity.
256.8500 – Portuguese two stations (Full quieting)
256.9410 – Portuguese one station testing
256.9500 – Fleetsatcom Transponder (25 kHz)-Wideband Data
256.9500 – Wideband Data
257.0500 – Fleetsatcom Transponder (25 kHz)
- Portuguese two stations (Strong)
- Wideband Data
257.0500 – Data
257.1450 – Wideband Data
257.1500 – Fleetsatcom Transponder (25 kHz)
257.3200 – Wideband Data
257.3200 – Wideband Data
257.3250 – Skynet Transponder
257.4450 – Wideband Data/voice
257.4500 – Skynet Transponder
257.5000 – Skynet Transponder
257.5500 – Skynet Transponder
257.6000 – Skynet Transponder-FM Radio Harmonic
257.6500 – Skynet Transponder
257.7250 – Repeating single tone, beacon? (Weak)
257.9400 – Warbling tone
257.9560 – Warbling tone
257.9570 – Warbling tone
257.9710 – Warbling tone
257.9775 – Warbling tone
257.9800 – Data
257.9805 – Warbling tone
257.9940 – Warbling tone
257.9975 – Warbling tone
257.9975 – Warbling tone
258.0030 – Warbling tone
258.0045 – Data
258.0190 – Warbling tone
258.0225 – Data
258.0265 – Data
258.0290 – Warbling tone
258.0900 – Data
258.3050 – Data (Weak)
258.3500 – UHF Follow On Transponder (25 kHz)
- Portuguese two stations (Strong)
- Telcom (Moderate signal)
- Wideband Data
258.3500 – Wideband Data
258.3550 – Telcom (Moderate)
258.3550 – Telcom Heard busy signal.
258.4400 – Portuguese two to four stations heard (Strong signals)
258.4400 – Portuguese two stations (Moderate) Frequency varies - .4420
258.4500 – Fleetsatcom Transponder (25 kHz)
- Portuguese usually two stations (Strong signals) also telcom
- Wideband Data
258.4500 – Encrypted comms
- Wideband Data (Weak)
- Portuguese two stations (Weak)
258.4600 – Portuguese two stations (Full quieting)
258.4600 – Portuguese one station (Full quieting)
258.4615 – Portuguese one station OM (Moderate signal)
258.5400 – Portuguese several stations very active (Full quieting)
258.5500 – Fleetsatcom Transponder (25 kHz)
- Wideband Data
- Portuguese two stations (Moderate)
258.6500 – Fleetsatcom Transponder (25 kHz) - Single tone transmitted four times every minute, best heard in USB.
258.6550 – Wideband Data
258.7750 – Wideband Data
258.7750 – Wideband Data
260.3500 – Fleetsatcom Transponder
260.3585 – USB odd data transmission (Weak)
260.3750 – Fleetsatcom Transponder-Data
260.3800 – Data
260.3835 – USB–voice (Weak)
260.3975 – Carrier
260.4000 – Fleetsatcom Transponder
260.4100 – Telcom (Very weak)
260.4200 – Portuguese usually two stations (Moderate to strong signals) Actual transmitted frequency can vary, also Wideband Data
260.4250 – Fleetsatcom Transponder-Telcom Portuguese, can usually hear the dialing (Signal varies weak to moderate). Actual frequency sometimes varies.
260.4300 – Portuguese two or three stations (Strong signals)
260.4400 – Test transmissions Whistling, blowing into mike.
260.4500 – Fleetsatcom Transponder
260.4700 – Portuguese usually two stations (Strong signals)
260.4700 – Portuguese two stations, very active (Full quieting)
260.4725 – Fleetsatcom Transponder
260.4750 – Fleetsatcom Transponder-Telcom Portuguese, dialing and frequency can vary sometimes
260.4780 – USB–ARQ variant (Weak)
260.4800 – Telcom (Weak)
260.4800 – Data (Very strong)
260.5000 – Fleetsatcom Transponder
260.5100 – Mike keying (Full quieting)
260.5150 – FM Radio Harmonic
260.5250 – Fleetsatcom Transponder
260.5300 – DOD modem (Very strong)
- Portuguese very active with two to four stations at a time (Often strong signals) Inactive as of 11-2005 due to DOD modem transmissions.
260.5420 – Carrier (Weak)
260.5500 – Fleetsatcom Transponder
260.5700 – Portuguese two stations (Moderate strength)
260.5750 – Encrypted transmissions
260.5750 – Fleetsatcom Transponder-Telcom (Weak)
260.5800 – Portuguese two to three stations (Moderate strength)
260.5990 – USB and Carrier (Weak, fades in and out)
260.6000 – Fleetsatcom Transponder
260.6250 – Fleetsatcom Transponder
260.6275 – Wideband Data
260.6275 – Wideband Data
260.6500 – Fleetsatcom Transponder
260.6750 – Fleetsatcom Transponder
260.6750 – Telcom Portuguese YL one station (Full quieting) Could hear a sat delayed echo of everything she said.
260.6800 – Portuguese two stations (Moderate strength)
260.7000 – Fleetsatcom Transponder
260.7250 – Fleetsatcom Transponder
260.7250 – Wideband Data
260.7250 – Wideband Data
260.7500 – Fleetsatcom Transponder
260.7720 – Carrier
260.7750 – Fleetsatcom Transponder
260.8000 – Fleetsatcom Transponder
260.8250 – Fleetsatcom Transponder
260.8500 – Fleetsatcom Transponder
260.8710 – Carrier
261.0060 – Carrier
261.0100 – Carrier
261.0410 – Carrier
261.0685 – continuous data transmission of some sort, not regular DOD stuff and 25 kHz wide.
261.1050 – Carrier
261.1175 – Carrier
261.1375 – Carrier
261.1650 – Carrier
261.1685 – Data transmission, same as 261.0685 (Moderate signal)
261.3840 – AM–Aircraft (Weak)
261.3970 – Carrier
261.3994 – AM–Several aircraft and possible AWACS controller (Moderate signals)
261.4000 – Occasional FM Radio Harmonic and a warbling tone
261.4500 – Fleetsatcom Transponder
261.4545 – Carrier
261.4750 – Fleetsatcom Transponder-ITC English heard
261.5000 - FM Radio Harmonic
261.5000 – Fleetsatcom Transponder
261.5090 – Carrier
261.5155 – Carrier
261.5250 – Fleetsatcom Transponder-Warbling tone
261.5250 – Fleetsatcom Transponder
261.5600 – USB and Wideband Data
261.5650 – Ascending/descending sweeper best heard in AM or USB
261.5660 – Carrier
261.5700 – Carrier
261.5750 – Fleetsatcom Transponder
- Occasional ITC English
- Encrypted voice
- Ascending frequency sweeper
- LINK-11
261.5780 – Telcom Portuguese (Moderate)
261.5870 – Warbling tone (Weak)
261.5875 – USB ascending sweeper
261.6000 – Fleetsatcom Transponder-Portuguese two stations (Strong)
261.6050 – Occasional encrypted comms
261.6195 – LINK-11? (Very weak) heard in USB.
261.6215 – USB–Data tones repeating every 5 seconds (Weak)
261.6240 – Portuguese two stations (Moderate signal) Weak modulation
261.6250 – Fleetsatcom Transponder
261.6300 – USB–Data tones repeating every 5 seconds (Weak)
261.6480 – AM–Aircraft (weak)
261.6475 – Warbling tone (Strong)
261.6494 – USB voice transmission (Very weak) Occasional tone.
261.6500 – Fleetsatcom Transponder
261.6600 – Wideband Data
261.6600 – USB–Wideband Data
261.6620 – Warbling tone (Weak)
261.6650 – USB packet type transmissions
261.6740 – USB and carrier transmitted every 15 seconds
261.6750 – Fleetsatcom Transponder-Encrypted comms
261.6750 – Encrypted comms
261.6767 – USB Phone Patch Telcom? one station YL
261.6990 – USB–Warbling tone
261.7000 – Fleetsatcom Transponder
261.7080 – Telcom Arabic relay, often full quieting at night. No longer active?
261.7250 – Fleetsatcom Transponder
261.7485 – USB set of two/three tones transmitted in a sequence, every few minutes (Strong)
261.7500 – Fleetsatcom Transponder
261.7600 – USB – Wideband Data
261.7750 – Fleetsatcom Transponder
261.7800 – Warbling tone
261.7804 – SFM–Telcom DTMF tones, ringing, conversations, etc (Weak) Possibly another Arabic phone. Very active.
261.8000 – Fleetsatcom Transponder
- FM Radio Harmonic “Radio Maria”
– Guatemala. “Una voz Catolica en su casa”
- AM–Aircraft.
261.8200 – USB
– Carrier
261.8250 – Fleetsatcom Transponder
261.8400 – Warbling tone
261.8500 – Fleetsatcom Transponder
- Portuguese two stations (Full quieting)
- AM–AWACS and fighters (Moderate signals)
261.8660 – Warbling tone intermittent
261.8750 – Fleetsatcom Transponder-Encrypted voice
261.9000 – Fleetsatcom Transponder
- Portuguese two stations (Moderate)
- Digitally encrypted voice
- Warbling tone
261.9240 – USB single tone transmiited every 11-12 seconds for 2 seconds. Can hear a second, weaker tone just before the
stronger one transmits. The weaker signal transmits for about 3 seconds. Signal is strong for both. Now a pulsed-tone.
261.9250 – Fleetsatcom Transponder-beacon? Tone every 10 seconds
261.9500 – Fleetsatcom Transponder
261.9600 – Warbling tone
262.0500 – Fleetsatcom Transponder
262.0600 – USB–Wideband Data
262.0750 – Fleetsatcom Transponder
262.1000 – Fleetsatcom Transponder
262.1150 – Wideband Data
262.1230 – Wideband Data
262.1250 – Fleetsatcom Transponder
262.1500 – Fleetsatcom Transponder
262.1610 – USB–Data transmission, same as 261.0685
262.1750 – Fleetsatcom Transponder
262.2000 – Fleetsatcom Transponder
262.2100 – USB–Wideband Data
262.2250 – Fleetsatcom Transponder
262.2500 – Fleetsatcom Transponder
262.2600 – USB–Wideband Data
262.2750 – Fleetsatcom Transponder
262.2750 – Encrypted comms Wideband
262.2750 – encrypted Wideband comms
262.3000 – Fleetsatcom Transponder
- Occasional ITC English, usually a test transmission
- Strong encrypted comms
262.3250 – Fleetsatcom Transponder
- Occasional ITC English test transmissions
- Wideband Data
262.3250 – Wideband Data
262.3500 – Fleetsatcom Transponder
262.3700 – Portuguese one station calling “Santa Cruz,” also testing
262.3700 – Portuguese three stations (Moderate)
262.3723 – USB–Telcom, Same as 267.0332 (Weak)
262.3730 – USB–Warbling tone
262.3750 – Fleetsatcom Transponder-Encrypted comms
262.3800 – Portuguese two stations (Strong)
262.3805 – Portuguese two stations (Strong)
262.4000 – Fleetsatcom Transponder
262.4244 – USB–Telcom, same as 267.0332
262.4250 – Fleetsatcom Transponder
262.4500 – Fleetsatcom Transponder
262.4750 – Fleetsatcom Transponder
262.5000 – Fleetsatcom Transponder
262.5250 – Fleetsatcom Transponder
262.5500 – Fleetsatcom Transponder
262.6650 – USB–Wideband Data
263.0400 – Encrypted transmissions wideband.
263.2250 – Wideband Data
263.5700 – Telcom Portuguese (Full quieting)
- Portuguese two stations (One full quieting/One very weak) Phone patches? Dial tones, dialing.
263.5710 – Portuguese, two stations (Full quieting)
263.5750 – UHF Follow On Transponder
- Portuguese two stations (Full quieting)
263.5750 – Wideband Data or voice
263.5775 - Wideband Data or voice
263.5790 – Portuguese two stations (Full quieting)
263.5810 - Portuguese two stations (Moderate)
- Telephone comms, dialing, conversation. PP. Weaker than the other comms
263.6200 – Wideband Data
263.6250 – UHF Follow On Transponder - Encrypted voice
263.6685 – Portuguese two stations (Full quieting)
263.6700 – Wideband Data
263.6705 – Portuguese two stations (Full quieting)
263.6750 – UHF Follow On Transponder - Portuguese two stations (Moderate)
263.6750 – AM - Portuguese two stations testing (Very strong)
263.6800 – Portuguese two stations (Moderate)
263.6800 – Portuguese three stations YL (Full quieting), one station with mike problem
263.7200 – FM Radio Harmonic
263.7240 - Encrypted voice
263.7250 – UHF Follow On Transponder - Portuguese two stations (Weak)
263.7750 – UHF Follow On Transponder
263.8200 – Spanish or Portuguese two stations (Moderate signal)
263.8250 – UHF Follow On Transponder - Wideband Data
263.8300 – Portuguese two stations (Moderate signal)
263.8750 – UHF Follow On Transponder
263.9200 – Portuguese two stations (Full quieting)
263.9200 – Portuguese three stations (Full quieting)
263.9250 – UHF Follow On Transponder
263.9300 – Spanish or Portuguese, very active frequency. Usually ITC traffic, but have heard and decoded speech inverted
comms. Usually two stations. Often strong signals. Also some Encrypted comms
265.2400 – Carrier
265.2500 – Fleetsatcom Transponder (25 kHz)-Encrypted comms
265.2500 – Encrypted comms
265.3350 – Telcom could hear dialing (Weak)
265.3425 – Portuguese two stations (Moderate) some interference
265.3500 – Fleetsatcom Transponder (25 kHz)
- Wideband Data
- FM Radio Harmonic
265.4350 – Wideband Data
265.4400 – Portuguese two stations (Full quieting)
265.4425 – AM–Portuguese two stations (Strong signal)
265.4450 – UHF Follow On Transponder-Portuguese two stations (Full quieting) Using speech inversion (5550 Hz)
265.4500 – Fleetsatcom Transponder
- USB–RTTY 170 Hz shift encrypted.
- Portuguese two stations (Full quieting) using speech inversion. (5200Hz)
265.4600 – Portuguese one stations (Full quieting)
265.4600 – Portuguese one stations (Moderate)
265.4640 – LSB–Portuguese one stations YL. Telcom? (Moderate strength)
265.5400 – Portuguese two stations (Moderate)
265.5500 – Fleetsatcom Transponder
- USB/RTTY 170Hz or 850Hz shifts (Strong signals) Encrypted
- Wideband Data
– Portuguese two stations (Full quieting)
265.5500 – Portuguese two stations (full quieting)
265.5580 – USB–single tone repeating every 12 seconds (Moderate)
265.9985 – USB–beacon? Tones similar to fax transmission (Weak)
266.5000 – English test transmissions.
266.5215 – Carrier
266.5840 – Carrier
266.7000 – Carrier
266.7050 – Carrier
266.7375 – Telcom Portuguese one station (Weak modulation)
266.7476 – USB–Telcom Portuguese/English not AM (Moderate). Sounds like the signals on 267.0332. The strange dialing sounds
and ringing tone, etc. Can also hear the little squiggly tone that can be heard on 269.750 in the background. This is
stronger than the 267 MHz signals.
266.7484 – USB–Telcom Portuguese\English (Moderate)
266.7500 – UHF Follow On Transponder-Carrier with Warbling tone
266.7500 – Carrier with Warbling tone. Full quieting. Data Bursts same as 269.7500.
- Telcom. Portuguese dialing (Weak conversations)
266.7580 – USB–single tone transmitted every eight seconds and two second duration. Tone drops in audio frequency slightly
during transmission.
266.7920 – Carrier
266.7975 – Carrier
266.8025 – Carrier
266.8225 – Carrier
266.8375 – Telcom Russian strengths vary and multiple signals
266.8500 – Fleetsatcom Transponder
- Telcom Russian strengths vary and multiple signals
266.8500 – Portuguese two stations (Strong)
266.8500 – Encrypted comms (Very strong)
266.8625 – Telcom Russian strengths vary and multiple signals
266.8625 – Telcom Portuguese could hear DTMF tones (Moderate signal)
266.9375 – Telcom Russian strengths vary and multiple signals
266.9350 – Data
266.9450 – Carrier
266.9500 – Fleetsatcom Transponder
- Telcom Russian strengths vary and multiple signals
- Data or encrypted voice (Very strong)
266.9500 – Encrypted voice.
266.9625 – Telcom Russian strengths vary and multiple signals
266.9800 – Carrier
266.9915 – Carrier
266.9940 – Carrier
267.0008 – Carrier
267.0050 – Fleetsatcom Transponder
267.0065 – Carrier
267.0090 – Carrier
267.0250 – Carrier (Weak)
267.0334 – USB Telcom Very active. Can hear transmissions every few minutes. Weak but readable. Sounds different from the
Russian or other Portuguese telephone comms. Relay of some sort? Can hear what sounds like dialing but not DTMF tones. Also
possibly an operator taking calls? Only one side of duplex? Telephone calls may be from western hemisphere, not active at
night. One theory is that this is a main trunk system routed through a satellite that is nearby one of the milsats and that
an I.F. signal is leaking out and being picked up by the milsat.
267.0350 – Carrier
267.0355 – USB Telcom SS conversations, same as 267.0334 (Stronger signals)
267.0370 – Telcom Russian (Strong signals) The distinctive dialing of the Russian System.
267.0375 – USB Telcom, same as 267.0334 and very active
267.0388 – USB Telcom Portuguese/Spanish (Moderate) very active
267.0396 – USB Telcom (Weak) very active
267.0404 – USB Telcom, same as 267.0334
267.0455 – USB Telcom, same as 267.0334, little stronger
267.0470 – Carrier (Weak)
267.0489 – USB Telcom
267.0500 – Wideband Data
267.0500 – Wideband Data
267.0525 – USB Telcom (Weak)
267.0593 – USB Telcom (Weak)
267.0600 – FM Radio Harmonic, not always heard
- Carrier and Warbling tone.
267.0900 – Carrier
267.1025 – Carrier
267.1650 – Warbling Carrier (slower warble than heard elsewhere)
268.1500 – UHF Follow On Transponder-Wideband Data
268.1700 – Carrier on\off
268.2390 – Portuguese two stations (Full quieting)
268.2500 – Fleetsatcom Transponder-Data
268.2500 – Data
268.2485 – Telcom Portuguese (Moderate signal)
268.3500 – Fleetsatcom Transponder-FM Radio Harmonic
268.3500 – UHF Follow On Transponder
268.4500 – Fleetsatcom Transponder-Telcom Spanish or Portuguese (Weak signal)
268.4600 – FM Radio Harmonic
268.6750 – Wideband Data
268.8175 – Carrier
269.0050 – Carrier
269.6500 – UHF Follow On Transponder-Wideband Data
269.6500 – Wideband Data
269.7390 – Carrier with Warbling tone
269.7430 – Carrier with Warbling tone
269.7475 – Carrier with Warbling tone
269.7500 – Fleetsatcom Transponder
- Carrier with Warbling tone
- high-speed Data Bursts approximately every 5 minutes. Duration approximately 3 seconds (Strong signal)
269.7500 – Transponder
269.7590 – Carrier with Warbling tone
269.8400 – Wideband Data
269.8475 – Weak voice comms
269.8500 – Fleetsatcom Transponder-Data
269.8500 – Data
269.8515 – Weak voice comms
269.9500 – Fleetsatcom Transponder
- Occasional ITC English. Have also heard CW ID transmitted
- Wideband Data
269.9500 – Wideband Data
