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RE: LF: RF ammeter question

To: "[email protected]" <[email protected]>
Subject: RE: LF: RF ammeter question
From: Rik Strobbe <[email protected]>
Date: Tue, 11 Jan 2011 14:14:34 +0100
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Thread-topic: LF: RF ammeter question
73, Rik  ON7YD

Van: [email protected] [[email protected]] namens Markus Vester [[email protected]]
Verzonden: dinsdag 11 januari 2011 14:04
Aan: [email protected]
Onderwerp: Re: LF: RF ammeter question

John, the 1N4007 can actually be useful as a varicap replacement to pull an oscillator. 
73, Markus (DF6NM)

-----Ursprüngliche Mitteilung-----
Von: John RABSON <[email protected]>
An: [email protected]
Verschickt: Di., 11. Jan. 2011, 12:16
Thema: LF: RF ammeter question


I have built the fullwave rectified version of the design shown on page 10.33 of 
the RSGB Handbook 10th edition.  It reads correctly at 25kHz but only show 1/3 
of the correct value at 136. 

Not having any 1N4148 diodes I used 1N4007s.  Might this be the cause of the 

John F5VLF

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