As noted recently, and heard tonight in the USA on the lower portion of
40 Meters, there is wideband pulse noise which is strongly suggestive of
the old OTH radar Woodpecker from the 70's or so. Around 0200 GMT in
Central Texas, on my 40 meter array, it appears to be coming from the
South, but was not near as loud as the older transmissions from the past.


Can anyone else confirm the general arrival direction for it, as well as
comment on signal strengths, for example, from South American sites?
The older transmissions were general source area traceable from afar, at
least in the 40 meter band, by carefully plotting the signal strength,
especially the vanishing point in the received signals, and the sunrise
line for the cutoff times for propagation from the source sites.
Cooperative work at this can reasonable focus a generalized source site
for the transmissions. Or at least in the case of the older Woody, that
was possible.


The transmissions heard here this evening were generally in the roughly
7000 Khz to 7060 Khz bandwidth, at least at the signals strength here.
Any other observations to begin focusing on the origins of this signal
source this time?


W5WQN

--


-- Sleep well; OS2's still awake!

Mike Luther

"Mike Luther" wrote in message
...
As noted recently, and heard tonight in the USA on the lower portion of 40
Meters, there is wideband pulse noise which is strongly suggestive of the
old OTH radar Woodpecker from the 70's or so. Around 0200 GMT in Central
Texas, on my 40 meter array, it appears to be coming from the South, but
was not near as loud as the older transmissions from the past.

Can anyone else confirm the general arrival direction for it, as well as
comment on signal strengths, for example, from South American sites? The
older transmissions were general source area traceable from afar, at least
in the 40 meter band, by carefully plotting the signal strength,
especially the vanishing point in the received signals, and the sunrise
line for the cutoff times for propagation from the source sites.
Cooperative work at this can reasonable focus a generalized source site
for the transmissions. Or at least in the case of the older Woody, that
was possible.


The transmissions heard here this evening were generally in the roughly
7000 Khz to 7060 Khz bandwidth, at least at the signals strength here.
Any other observations to begin focusing on the origins of this signal
source this time?


W5WQN

--


-- Sleep well; OS2's still awake!

Mike Luther


This thing has been blasting the knobs off my rig for a few months now. It
is VERY strong in VK at night. Beam headings indicate it may possibly be
coming from the Parcel Islands.

Brad.

I've been putting up with it from 40M to 12M for several months.
Fortunately, the NB on my 756 ProII takes care of it. Sure wish I knew when
it was going away!

When it's there, you can see it clearly on the panadapter. I looks like a
series of ignition spikes, but with a definite pattern, not like a car
engine. I'll try to get a direction on it, but my mini-beam is not very
directive.

Dave - W5GT


"Brad" bradvk2qq AT w6ir.com wrote in message
...

"Mike Luther" wrote in message
...
As noted recently, and heard tonight in the USA on the lower portion of
40
Meters, there is wideband pulse noise which is strongly suggestive of
the
old OTH radar Woodpecker from the 70's or so. Around 0200 GMT in
Central
Texas, on my 40 meter array, it appears to be coming from the South, but
was not near as loud as the older transmissions from the past.

Can anyone else confirm the general arrival direction for it, as well as
comment on signal strengths, for example, from South American sites?
The
older transmissions were general source area traceable from afar, at
least
in the 40 meter band, by carefully plotting the signal strength,
especially the vanishing point in the received signals, and the sunrise
line for the cutoff times for propagation from the source sites.
Cooperative work at this can reasonable focus a generalized source site
for the transmissions. Or at least in the case of the older Woody, that
was possible.


The transmissions heard here this evening were generally in the roughly
7000 Khz to 7060 Khz bandwidth, at least at the signals strength here.
Any other observations to begin focusing on the origins of this signal
source this time?


W5WQN

--


-- Sleep well; OS2's still awake!

Mike Luther


This thing has been blasting the knobs off my rig for a few months now. It
is VERY strong in VK at night. Beam headings indicate it may possibly be
coming from the Parcel Islands.

Brad.