[Lowfer] Big sig on 17.8 kHz

[Robert M. Bratcher Jr.]

I wonder how much RF power they put out? And what is MSK?

At 09:21 AM 7/28/2010, you wrote:
>In a message dated 7/28/2010 4:46:46 A.M. Eastern Daylight Time,
>dwilson314 at verizon.net writes:
>
>It is a US Navy TACAMO aircraft.  I see them use 17.8 once or twice a
>week.
>By the way, they run 50 Bd baudot then the high speed MSK.    The baudot is
>the latest EAM--sample messages saved earlier are below.   also, "Channel
>One" does not refer to the frequency but to the broadcast  channel which
>may
>be on different frequencies and does use other VLF  frequencies at times.
>(The same EAM can also be heard in usb voice on USAF  frequencies like
>11175
>kHz at about the same time.)
>
>Although, the 50  Bd is 50 Hz shift, Multipsk will copy if set for 85 Hz.
>
>...
>CHANNEL  ONE
>CHANNEL ONE
>CHANNEL  ONE
>RYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYRYKKKKKKZCZCZC
>ZXLLXLLXLL
>ZZ
>
>
>Thanks for all the interesting info on the TACAMO signal "Channel  One".
>Their airborne VLF transmitter and trailing-wire antenna put out a whale of
>  a signal
>on VLF!  Would be interesting to find out how long the trailing-wire
>antenna is?
>They may be able to reel out a full 1/4 wave wire on VLF.
>73 - Todd WD4NGG
>