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Author Topic: Buzz on 40M  (Read 2654 times)
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K3ZS
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« on: August 26, 2012, 01:31:05 PM »
Anyone have a clue to what the buzz is at the top end of 40M?   It sounded like local interference but it is being heard over the whole northeast of the US from other reports.
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Sam KS2AM
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« Reply #1 on: August 26, 2012, 01:38:50 PM »
Quote from: K3ZS on August 26, 2012, 01:31:05 PM
Anyone have a clue to what the buzz is at the top end of 40M?   It sounded like local interference but it is being heard over the whole northeast of the US from other reports.


The Boston Buzzie ?   Wink
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n1bnc
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« Reply #2 on: August 28, 2012, 04:20:14 PM »
Was it a pulsating sorta static kinda noise? I heard something odd this morning on 40 and the noise blankers would not do much with it.
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W3RSW
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Rick & "Roosevelt"
« Reply #3 on: August 28, 2012, 04:46:39 PM »
Here it is.  Really shows up as extremely broadbanded yet annoying.
One set of measurements at about 3kHz bandwidth shows it at about -92dbm on my lashup vs. about -100 dbm background at 7200kHz. 

Listening to the qso's on top of it seems to make the receipients think the other guy has hum on his signal.  Signals in the mud seem to be modulated by it.  Signals much stronger have a faint background buz anyway.

* 40 mtr buzz 8 28 12.PNG (413.11 KB, 1167x698 - viewed 367 times.)
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RICK  *W3RSW*
K3ZS
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« Reply #4 on: August 29, 2012, 01:51:23 PM »
When it was on, one guy had been looking all over his house and neighborhood thinking it was local.   It sounded like 60 Hz, from about 7260 to 7325 then it quickly dropped off out of that range.   I thought it might have been someone who seriously hated AM on 40.
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WA3VJB
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« Reply #5 on: August 29, 2012, 08:12:18 PM »
Caught it Wednesday evening while I was on 7293Kc with Rich N2RY.

He was 20+ and the buzzie was S-3 so not a problem.

Interestingly, it came on at 2254 and went off at 2308 (GMT).  I mean, completely on and completely off, not just a fade or band conditions changing.
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