[Spooks] Pulses on 14066 and 14296 kHz

[James Weinert]

 Greetings ~

 The same signal with similar strength was just rcvd here in SE Wisconsin at
2400 UTC

Curious, what is an, "Ionosonde"? Sounds Interesting.

73 Jim WB9NNK

----- Original Message -----
From: "Martin H. Potter" <mhpotter@iosphere.net>
Sent: Sunday, December 08, 2002 11:45 AM
Subject: [Spooks] Pulses on 14066 and 14296 kHz


>
> Hello All,
>
> This is a little off-topic, but I wonder if others are hearing the
> pulses (sounds like an ionosonde or OTHR) on 14066 kHz during local
> mornings in eastern North America (but never later than 1530 UT).  It
> isn't active every day and signal strength is a modest QSA2-3 here.
> No evidence of antenna rotation or beam switching.
>
> PRF is almost 25 pulses/sec and seems to vary slightly from day to
> day.  I have measured the pulse period at several values between 40.44
> and 40.53 millisec.
>
> Bandwidth is rather narrow and the signal covers 14062-14070 kHz and
> the pulse train in the lower half of the bandwidth has a different
> epoch than those in the upper half, as if two pulses were being
> emitted on slightly different freqs.  (Is this a technique to increase
> range resolution without increasing bandwidth?)
>
> DF from Ottawa, Canada, is SSE to S, or roughly along a line down the
> U.S. eastern seaboard, across the Caribbean, and into central South
> America.
>
> On some afternoons I have heard the same signal on 14296 kHz, same
> characteristics.
>
> 73,
> ... Martin    VE3OAT
>
> near Ottawa, Canada
> mhpotter@iosphere.net