[Lowfer] It is...

[Mr. K. Rudolph, KD7JYK]

This is the actuall scanning frequency, the data is downloaded from a
computer over phone lines. There has been a big stink over it as it is
jamming BC, HAM, Aero and Military comms at times on other frequencies near
5, 8 and 12 MHz..  The FCC ordered them to operate in the ISDM region near
13,500 KCs.  I had a link with all sorts of pictures and data, but can't
find it.

Kurt

---
Ross Technologies Signals Intelligence Division
Rosetta Proving Grounds
----- Original Message -----
From: "Dexter McIntyre, W4DEX" <dmcintyre@att.net>
To: <lowfer@mailman.qth.net>
Sent: Thursday, February 28, 2002 18:24
Subject: Re: [Lowfer] It is...


> 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
> >
> >
>
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