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Author Topic: 4MHz HF Maritime Duplex Channels  (Read 703 times)

Offline Teotwaki

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4MHz HF Maritime Duplex Channels
« on: December 19, 2020, 0249 UTC »
Has anyone caught much traffic in the ITU channelized HF spectrum between 4.063 and 4.438? I trolled through the Utility posts and did not immediately spot any loggings. Thanks!

https://www.navcen.uscg.gov/?pageName=rtchan4

ITU Channel No.    - Coast Transmit kHz    - Ship Transmit kHz
401   4357     4065
402   4360     4068
403   4363     4071
404   4366  4074
405   4369     4077
406   4372     4080
407   4375     4083
408   4378     4086
409   4381     4089
410   4384   4092
411   4387   4095
412   4390     4098
413   4393     4101
414   4396     4104
415   4399     4107
416   4402     4110
417   4405     4113
418   4408     4116
419   4411     4119
420   4414     4122
421   4417     4125
422   4420     4128
423   4423     4131
424   4426     4134
425   4429     4137
426   4432     4140
427   4435     4143
428   4351     (varies)
429   4354     (varies)
Logged
Jim
NRD-525, Elecraft KX3 and Elecraft PX3 Spectrum Display
76' end fed long wire & 66' off-center fed dipole for 10/20/40 meters
Orange County, SoCal, The better half
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