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G4APL > ALL 01.09.14 14:04l 57 Lines 1910 Bytes #999 (0) @ GBR
BID : 18694G4APL
Read: GUEST
Subj: Re: Re 14100kHx WIDE BAND BUZZ
Path: IW8PGT<CX2SA<VK2DOT<VK4TUB<NA7KR<GB7JED<GB7CIP<GB7CIP<GB7CIP
Sent: 140829/1526Z @:GB7CIP.#32.GBR.EURO $:18694G4APL
T:From: Paul Lewis <g4apl@gb7cip.ampr.org>
T:Newsgroups: ampr.all
T:Message-Id: <ltq60d$4hh$1@gb7cip.ampr.org>
<From G4APL>
Hello John
Thanks for the detail feedback, I came across this when I came into the
Radio Shack at 13:00GMT and it continued until 15:00GMT
on 14100.00kHzHz +/- 59+40 on the HF 3ele Beam and also on the ground
mounted trapped vertical. Monitored on the GB7CIP TS-480sat pactor system
and TS2000e
Also found on 18805kHz on the untuned trapped vertical at S3. Monitored on
the TS2000e
Both signals disappeared at 15:00GMT.
Wonder if they will appear again tomorrow? Or other times.
de Paul g4apl
g8mny%gb7cip.#32.gbr.euro@gb7cip.ampr.org wrote:
> From: G8MNY@GB7CIP.#32.GBR.EURO
> To : ALL@GBR
>
> Paul sent.....
> From : G4APL
> Date/Time : 29-Aug-14 15:27
> Subject : 14100zHZ WIDE BAND BUZZ
>
> Hi all in GBR
>
> Are any of you experiencing the Wideband Buzz between 14079.00-14119.00kHz
> seems to be Mains bourne 59+40db's. Is then being produced the EDF electricty
> company. Location NE Surrey.
> Is the Se England wide
> 73 de Paul g4apl
> --------------------------------------
>
> Looking at it in South Croydon on a nest of dipoles it is very strong S9+40dB.
>
> With my Rx in FM in on a dusl beam scope it is clearly a FM wobulator type
> signal deviating +/-20KHz at 50Hz, but not mains locked!
> ______
> Y1 ____| |_ 50Hz mains Scope Cal signal
>
> Y2 .,.,..|\ .., Not locked moving
> \| slowly across screen
>
> Quicly tunning Rx the Trace moves left right a bit until the signal is not all
> in the FM Rx.
>
> In SSB U get a sweep of AF frequencies 300-2k7 in a 50Hz pulse. This is anoying
> as it contains all the comms speech frequencies, so just a whisker of the wide
> signal in the passband makes the contact unusable.
>
> Other buzzes here on LF/MF/HF bands are all mains locked!
>
> 73 De John G8MNY
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