The transponder chart below shows the spectrum plots of Atlantic ocean transponders currently in use. (frequency list last updated on 13/03/2010)

The charts below were made with an SDR-IQ or SDR-14 from RF-Space coupled to an AOR-5000 receiver.

Frequency Satellite Position Transponder plot
243.7850 30.0 East
243.8225 39.1 West
243.9950
244.0050
244.0150
244.0250
244.0350
244.0450
244.0550
244.0650
28.3 East
244.0750
244.0800
244.0850
244.0900
244.0950
244.1000
244.1050
244.1100
244.1150
244.1250
244.1350
244.1450
23.3 West
23.3 West
15.5 West
15.5 West
15.5 West
15.5 West
23.3 West
15.5 West
23.3 West
23.3 West
23.3 West
23.3 West
245.2000 6.0 East
245.8500 1.0 West
248.9750
248.9850
248.9950
249.0050
249.0150
249.0250
249.0350
249.0450
249.0550
28.3 East
249.0150
249.0250
249.0350
249.0450
249.0550
249.0650
249.0750
249.0850
249.0950
28.3 East
249.1050
249.1150
249.1250
249.1350
249.1450
249.1550
249.1650
249.1750
249.1850
23.3 West
249.1450
249.1550
249.1650
249.1750
249.1850
249.1950
249.2050
249.2150
249.2250
23.3 West
249.4495 6.0 East
249.4795 1.0 West
249.4995 6.0 East
249.5295 1.0 West
249.8495 1.0 West
249.9000 1.0 West
249.9500 6.0 East
250.1295 1.0 West
250.1795 6.0 East
250.1995 1.0 West
250.5500 15.5 West
251.3250 10.0 West
251.7000 HEO

251.9500
28.3 East
252.0500 23.3 West
252.1500 15.5 West
253.6500 28.3 East
253.7500 23.3 West
253.8055 34.0 West
253.8500 23.3 West
253.9300 1.0 West
253.9800 6.0 East
254.1250 34.0 West
255.3500 28.3 East
255.4500 23.3 West
255.5500 15.5 West
256.9500 28.3 East
257.0500 23.3 West
257.1500 15.5 West
257.4250 34.0 West
257.4480 35.4 East
257.5050 34.0 West
257.6550 53.1 East
257.7000 1.0 West
257.9000 6.0 East
258.2250 16.3 East
258.4500 28.3 East
258.5500 23.3 West
258.6500 23.3 West
258.7750 10.0 West
260.5250 23.3 West
260.5750 28.3 East
260.6750 28.3 East
261.1000 6.0 East
261.2800 1.0 West
261.6500 15.5 West
262.0750 28.3 East
262.1750 28.3 East
262.2750 28.3 East
262.3750 28.3 East
262.6750 10.0 West
263.6250 23.3 West
263.7250 23.3 West
263.7750 28.3 East
263.8750 28.3 East
265.3500 28.3 East
265.4500 23.3 West
265.5500 23.3 West
266.8500 28.3 East
266.9500 23.3 West
267.0500 23.3 West
268.2500 28.3 East
268.3500 23.3 West
268.4500 23.3 West
268.6750 10.0 West
269.7500 28.3 East
269.8500 23.3 West

269.9500
23.3 West

Any additions or corrections, please email info at uhf-satcom dot com