[Lowfer] It is...

[Dexter McIntyre, W4DEX]

So what I am hearing the the sonar data modulating a HF transmitter? 
The HF signal is the communications link from the sonar to a data
collection point?

Dex

"Mr. K. Rudolph, KD7JYK" wrote:
> 
> It is a narrow beam swept back and forth over the surface, reflections are
> converted to tones, very much like a fax or SSTV signal.  First units were
> built by Janesco, designated S3A, a co-worker was contracted to work on it.
> 
> Kurt
> 
> ---
> Ross Technologies Signals Intelligence Division
> Rosetta Proving Grounds
> 
>