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Author Topic: 7365 0800z buzzing jammer?  (Read 1311 times)

Offline Lex

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7365 0800z buzzing jammer?
« on: November 19, 2010, 0819 UTC »
11/19/10
7365 kHz
0755-0805z+: Pulsing buzzing, approx 240 bpm, possible jammer over what appears to be an empty freq as of this moment.  No carrier audible on 7365 for Marti, VOA or other.  Carriers and faint audio audible on adjacent 7360 (possibly POR RDP Internacional) and 7370 (presume Voice of Croatia), but buzzing fairly effectively nulled out by using narrow filter and sideband tuning.

3 min 30 sec mp3, 7365 USB, approx 0755z
« Last Edit: November 19, 2010, 0822 UTC by Lex »
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Offline SW-J

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Re: 7365 0800z buzzing jammer?
« Reply #1 on: November 20, 2010, 2159 UTC »
11/19/10
7365 kHz
0755-0805z+: Pulsing buzzing, approx 240 bpm, possible jammer over what appears to be an empty freq as of this moment.  No carrier audible on 7365 for Marti, VOA or other.  Carriers and faint audio audible on adjacent 7360 (possibly POR RDP Internacional) and 7370 (presume Voice of Croatia), but buzzing fairly effectively nulled out by using narrow filter and sideband tuning.

3 min 30 sec mp3, 7365 USB, approx 0755z

Posted for reference: that 'buzzing' may or not be coincident (It seems to be) with this 'wandering' spur (spurious) emission that can be found in/near Forty Meters (7 MHz) ... here's the link:

http://www.hfunderground.com/board/index.php/topic,3437.0.html

Also note there is a linked video with a dual-channel radio that attemptsd to let the listener judge whether or not the two 'buzzing' sounds (from the jammer and from the wandering buzz) possess similar characteristics.

 
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