To: | [email protected] |
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Subject: | Re: LF: Mains QRM blanker by PA0LQ |
From: | "Hans-Albrecht Haffa" <[email protected]> |
Date: | Tue, 30 Apr 2002 15:44:35 +0200 |
Organization: | http://freemail.web.de/ |
Reply-to: | [email protected] |
Sender: | <[email protected]> |
-----Ursprüngliche Nachricht wurde als Attachment angehängt.-----
Harry, PA0LQ, active on LF until his landlord forbade his aerial, livesin a 12 story apartment block of which corridors are permanently lit byfluorescent tubes. These caused such interference that only very strongsignals could be copied. Harry then constructed a blanker that operateson the audio out of the receiver. The blanker can be synchronised to themains frequency and produces blanking pulses of 50 or 100 Hz. Both widthand position of the pulses can be adjusted for optimum blanking. Thisbrought a great improvement in reception. Harry combined the blanker with an active 30 Hz bandwidthnon-ringing audio filter. I described both items in our VERON magazine Electron of June2000. If there is interest I am willing to translate the text into English andsend text and circuit diagram by e-mail to anyone requesting it. Orperhaps it could be placed on a website. But before taking action I await responses. 73, Dic k, PA0SE -----Ursprüngliche Nachricht (HTML) wurde als Anlage beigefügt.----- Von: [email protected] Gesendet: 30.04.02 An: "Hans-Albrecht Haffa" <[email protected]> Betreff: Re: LF: Mains QRM blanker by PA0LQ Göppingen, 30. 04.2002 Dr OM PA0LQ, of course I am interested in ur article in the VERON Club-Magazine. Looking foreward to an publication I remain sincerely Yours Hans-Albrecht Haffa DK 8 ND cba ok book 2002 ok ______________________________________________________________________________ All inclusive! 100 MB Speicher, werbefrei, SMS günstiger, Wunschrufnummer, Events, Preisvorteile und mehr unter http://club.web.de/?mc=021104 |
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