View Full Version : Interference on 3902Khz
N2EVD
12-08-2007, 01:51 AM
Please advise on interference heard regularly on 75 Meters, 3902Khz. I heard something about some type of experimental Radar, anyone know.
Thanks,
John
N2EVD
ai4ep
12-08-2007, 02:48 AM
http://www.qrz.com/iB_html/non-cgi/emoticons/biggrin.gif #
n9dsj
12-08-2007, 03:32 AM
Quote[/b] (N2EVD @ Dec. 07 2007,18:51)]Please advise on interference heard regularly on 75 Meters, 3902Khz. I heard something about some type of experimental Radar, anyone know.
Thanks,
John
N2EVD
Nothing heard here aside from usual net traffic...
73,
Bill N9DSJ
va7aax
12-08-2007, 03:48 AM
Quote[/b] (N2EVD @ Dec. 07 2007,18:51)]Please advise on interference heard regularly on 75 Meters, 3902Khz. I heard something about some type of experimental Radar, anyone know.
Thanks,
John
N2EVD
describe what you hear.
I had an interference problem on 80m , it turned out to be a street light.(mercury-vapor?)
w3dub
12-08-2007, 04:31 AM
only thing I hear here is the QSOs.. or 3905cc in the evenings...
I thought you meant 3992. That is some commercial station transmitting a wide form of DRM ( Digital Radio Mondial)
Don't hear anything on 3902 except a real weak net.
K8MHZ
12-09-2007, 02:35 AM
Quote[/b] (N2EVD @ Dec. 07 2007,13:51)]Please advise on interference heard regularly on 75 Meters, 3902Khz. I heard something about some type of experimental Radar, anyone know.
Thanks,
John
N2EVD
Check your own devices first. Shut down you main breaker and turn off all UPS devices and operate a receiver on battery power. Let us know the results and we may be able to help you further.
ai4ep
12-11-2007, 01:30 AM
http://www.qrz.com/iB_html/non-cgi/emoticons/tounge.gif # It must be suppertime on the radio in the dx world...3.872 and 3.930 all quite ecxept for static...same hear ( static too )...no one arguing of russing on this frequency either....fact is... the whole band is quite. #Oh look, some one put the ANTENNA SWITCH in the wrong position, no wunder I aint a hareing nuthin own my raddio.
Oh well, live & learn.
Now I wonder about my other two posts, if I done went and said something wrong or un - nice....cause I always strive to be nice here on the zed.
OH WELL. # # # :rock:
WA3KYY
12-11-2007, 05:24 PM
What is being heard is some sort of digital pulse that seems to start up sometime after 0200Z. It is not localized as numerous net particpants from different parts of the US have heard and commented on it. At first we thought it was deliberate QRM but rumor has it that it is some new form of OTHR originating at a military installation in Virginia.
It's the old Soviet Radar "Puttypecker". It was "Woodpecker" when it was young but it is really old now.
KD4IFB
12-13-2007, 02:30 PM
Quote[/b] (AG4YO @ Dec. 11 2007,11:00)]It's the old Soviet Radar "Puttypecker". #It was "Woodpecker" when it was young but it is really old now.
Heres a rare pic. of one..
k4avl
12-14-2007, 12:38 AM
Last night on 3.902 on the century club some idiot came on for a while & whined & moaned & disrupted the net without identifying. The net control was smart, saying things like "did you record that, guys?" , "you are easily recognizable", and "we'll forward that audio to the proper persons", and he didn't stick around too long. But what a lid to make an idiot of himself like that, even if no one did figure out who he was.