On 8 December 2014 at 07:24, Chris Wilson ch...@chriswilson.tv wrote:
This is audible here in the UK and elicited many comments on 160
meters last night. Seen as oblique striations on SDR receiver displays
and audible as a clicking sound. What the devil is it?
Best Regards,
Is the signal still there?
I looked here on the West Coast - don't really see anything.
Thanks,
John
AJ6BC
On Mon, Dec 8, 2014 at 12:42 AM, Dr. David Kirkby (Kirkby Microwave Ltd)
drkir...@kirkbymicrowave.co.uk wrote:
On 8 December 2014 at 07:24, Chris Wilson ch...@chriswilson.tv wrote:
Wouldn't you know it - about the time I sent that last e-mail - I am
getting something in the 1.915 MHz range right now - and you could say this
is around 4 Hz or so - I am trying to see if
I can get a match on any modulation type - but nothing so far. Definitely
wider though.
Regards,
John
this signal is being heard all across the eastern part of North America
and there are reports from at least as far west as Montana. I can hear
it during the day but at a very low level. Night time levels are much
stronger.
cheers, Graham ve3gtc FN25ig near Ottawa Canada
On 2014-12-07 19:09,
Radiolocation may be a bit misleading.
Some first thought that this was CODAR but it is not, at least not what
I am familiar with but it may be another variation of an ocean surface
wave RADAR type of system but it is certainly not like one I have heard
before.
cheers, Graham ve3gtc
On
Hello,
Can someone please post a *.wav file of what it sounds like provided you
have an SDR set-up?
If you need someplace to post - please send the file to me offlist and I'll
put it on either an ftp site or http.
I am not so convinced what I saw wasn't noise or some stations from China
On 2014-12-07 16:28, Tim Shoppa wrote:
Would any time-nuts know of radiolocation-type testing going on, on east
coast of US, maybe around Maine? There is a very strong wideband signal on
1900-1920kHz, with a 120Hz substructure and a 4Hz rep-rate, likely megawatt
power range.
Sound sample
On 2014-12-07 16:28, Tim Shoppa wrote:
Would any time-nuts know of radiolocation-type testing going on, on east
coast of US, maybe around Maine? There is a very strong wideband signal
on
1900-1920kHz, with a 120Hz substructure and a 4Hz rep-rate, likely
megawatt
80*24 = 1920. 80th harmonic seems quite a stretch unless there is some
malfunction (as you point out maybe an interaction with 60Hz heating...
hmm... maybe they thought they could use PWM on the heating circuit.). For
sure they have enough power and enough wire in the air to do the damage
being
Also hearing in central NH sounds like a new 'Woodpecker' Joy...
Content by Scott
Typos by Siri
On Dec 8, 2014, at 2:24 AM, Chris Wilson ch...@chriswilson.tv wrote:
Hello,
on 08/12/2014 07:21 you wrote:
I'm hearing the same signal in northern New Hampshire.
Very strong
73,
On 12/8/14, 6:15 AM, Brian Inglis wrote:
On 2014-12-07 16:28, Tim Shoppa wrote:
Would any time-nuts know of radiolocation-type testing going on, on east
coast of US, maybe around Maine? There is a very strong wideband
signal on
1900-1920kHz, with a 120Hz substructure and a 4Hz rep-rate, likely
Recorded last night. Audio bandwidth is a few kHz, but as mentioned before
the signal is about 20 kHz wide.
https://www.dropbox.com/s/bnp8zcpgw86l6ww/1910.wav?dl=0
This morning (14:21 UTC) nothing is heard
Frits W1FVB
Whitefield, NH
On 12/8/14, John C. Westmoreland, P.E.
Hello Frits,
Interesting. A little different than what I heard - but of course depends
on the bandwidth somewhat.
How many dB was this up from the noise floor? Or - what is the signal
level of the received signal?
What modulation did you try to decode or did you just set it wide-AM?
I saw
John,
On 12/8/14, John C. Westmoreland, P.E. j...@westmorelandengineering.com wrote:
Hello Frits,
Interesting. A little different than what I heard - but of course depends
on the bandwidth somewhat.
I think my bandwidth was set at about 8 Khz
How many dB was this up from the noise floor?
Hi
120 Hz sub structure suggests a (much lower power) switching power supply run
amok. I certainly would not design a system that would have virtually no
immunity to power line noise …..
Bob
On Dec 7, 2014, at 6:28 PM, Tim Shoppa tsho...@gmail.com wrote:
Would any time-nuts know of
Not aware of any testing plus it makes no sense these days. LORAN long ago
abandoned and was in that range and Loran C in the US dead. UrsaNav has
been quite for quite a while.
Regards
Paul
WB8TSL
On Sun, Dec 7, 2014 at 7:09 PM, Bob Camp kb...@n1k.org wrote:
Hi
120 Hz sub structure suggests a
Hi Tim,
Look for a switching power supply that is fairly new, and is
of the sort that doesn't need to be messed with to cover the full
120V to 240V range.
That sort of switcher is also known as a power factor correcting
switcher. It has a PWM switched pre-regulator that takes the
unfiltered
: [time-nuts] 1900kHz radiolcation testing on east coast US?
Hi Tim,
Look for a switching power supply that is fairly new, and is
of the sort that doesn't need to be messed with to cover the full
120V to 240V range.
That sort of switcher is also known as a power factor correcting
switcher. It has
Taking in account that is is heard quite strong in most US and even in
Toronto and that it sweeps in a fairly controlled way it is an
intentional radiator. It could be an ionospheric sounder or a sea waves
measuring device of a new kind. I think that an interference so powerful
must be
I'm hearing the same signal in northern New Hampshire.
Very strong
73, Frits W1FVB
On 12/8/14, Bob Camp kb...@n1k.org wrote:
Hi
120 Hz sub structure suggests a (much lower power) switching power supply
run amok. I certainly would not design a system that would have virtually no
immunity
Hello,
on 08/12/2014 07:21 you wrote:
I'm hearing the same signal in northern New Hampshire.
Very strong
73, Frits W1FVB
This is audible here in the UK and elicited many comments on 160
meters last night. Seen as oblique striations on SDR receiver displays
and audible as a clicking
21 matches
Mail list logo
