[Boatanchors] Boatanchors Digest, Vol 74, Issue 15
Henry Mei'l's
meils at get2net.dk
Sat Mar 13 14:21:12 EST 2010
I use a metal enclosed (probably aluminum) TV deflection coil for
demagnitixing items - I just apply ac to the coil windings and insert the
item into the center of the coil.
Copenhagen greetings,
Henry, OZ1UF
----- Original Message -----
From: <boatanchors-request at mailman.qth.net>
To: <boatanchors at mailman.qth.net>
Sent: Saturday, March 13, 2010 6:00 PM
Subject: Boatanchors Digest, Vol 74, Issue 15
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> Today's Topics:
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> 1. DE-MAGNETIZING A METER (Mr. and Mrs. Magoo)
> 2. Re: DE-MAGNETIZING A METER (n2lxm at juno.com)
> 3. Re: DE-MAGNETIZING A METER (Gary Schafer)
> 4. FS: General Precision Lab Standard Capacitor (Michael, W1RC)
> 5. F.S. National RAS-2 and RAS-5 coils (Wa4uso at aol.com)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Fri, 12 Mar 2010 15:19:27 -0500
> From: "Mr. and Mrs. Magoo" <magoo at isp.ca>
> Subject: [Boatanchors] DE-MAGNETIZING A METER
> To: <boatanchors at mailman.qth.net>
> Message-ID: <36DE87EC71DF47968BAC1426ED7F7F56 at MCHUGHU64FGOY>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> reply-type=original
>
> Anyone know how to do this without causing harm to the meter? I have a
> nice
> 200 ua meter I want to use in a homebrew wattmeter but the movement is
> magnetized and reading about 1/2 scale. It's not dirt...the vane moves
> freely down from full to half scale and down from mid scale to zero but it
> always returns to mid scale.
>
> Bill, VE3NH
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Fri, 12 Mar 2010 15:26:47 -0500
> From: n2lxm at juno.com
> Subject: Re: [Boatanchors] DE-MAGNETIZING A METER
> To: boatanchors at mailman.qth.net
> Message-ID: <20100312.122758.962.46412 at mailpop05.vgs.untd.com>
> Content-Type: text/plain; charset=us-ascii
>
> Good Day Bill,
>
>
> With a high sensitively meter like that you just may have a large
> static build up. I would carefully remove the meter from it's case and
> see it the vane zero's. If it does then clean the glass and the inside
> of the case with a good furniture polish. I found that Pledge works great
> for cleaning plastics and keeping static from building up. Give it a try,
> nothing to loose, but some dirt.
>
>
> Jeff N2LXM
> AMATEUR RADIO OPERATOR
> AMERICAN
> PATRIOT
> Proud Father of two US MARINES
>
> ____________________________________________________________
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> ------------------------------
>
> Message: 3
> Date: Fri, 12 Mar 2010 17:00:13 -0500
> From: "Gary Schafer" <garyschafer at comcast.net>
> Subject: Re: [Boatanchors] DE-MAGNETIZING A METER
> To: "'Mr. and Mrs. Magoo'" <magoo at isp.ca>,
> <boatanchors at mailman.qth.net>
> Message-ID: <20100312220013.805C237382D6 at mailman.qth.net>
> Content-Type: text/plain; charset="us-ascii"
>
> I doubt that it is a magnetization problem. It may have gotten zapped one
> time and distorted the return springs. Or someone may have needed a zero
> center meter and adjusted the springs.
>
> There are two springs. One is usually adjusted with the zero adjust on the
> front. The other is the same but you have to take the meter out of the
> case
> to adjust it. It will be like the front one but located at the back end of
> the movement. Sometimes they are easy to adjust and sometimes a pain.
>
> 73
> Gary K4FMX
>
>> -----Original Message-----
>> From: boatanchors-bounces at mailman.qth.net [mailto:boatanchors-
>> bounces at mailman.qth.net] On Behalf Of Mr. and Mrs. Magoo
>> Sent: Friday, March 12, 2010 3:19 PM
>> To: boatanchors at mailman.qth.net
>> Subject: [Boatanchors] DE-MAGNETIZING A METER
>>
>> Anyone know how to do this without causing harm to the meter? I have a
>> nice
>> 200 ua meter I want to use in a homebrew wattmeter but the movement is
>> magnetized and reading about 1/2 scale. It's not dirt...the vane moves
>> freely down from full to half scale and down from mid scale to zero but
>> it
>> always returns to mid scale.
>>
>> Bill, VE3NH
>>
>>
>> ______________________________________________________________
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>> ** For Assistance: dfischer at usol.com **
>>
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sat, 13 Mar 2010 07:14:30 -0500
> From: "Michael, W1RC" <subs at w1rc.net>
> Subject: [Boatanchors] FS: General Precision Lab Standard Capacitor
> To: boatanchors at mailman.qth.net
> Message-ID: <0MI5e2-1NomsF0AvO-003rrl at mrelay.perfora.net>
> Content-Type: text/plain; charset="us-ascii"; format=flowed
>
> Yet another treasure......
>
> This is a new in the box GENERAL RADIO 0.002 uF capacitor with screw
> terminals. Catalog number is 505-G.
>
> I am asking $15.00 plus postage for it. Any takers?
>
> 73,
>
> Michael, W1RC
>
> subs*at*w1rc*dot*net
>
>
>
>
> ------------------------------
>
> Message: 5
> Date: Sat, 13 Mar 2010 08:55:38 EST
> From: Wa4uso at aol.com
> Subject: [Boatanchors] F.S. National RAS-2 and RAS-5 coils
> To: Boatanchors at mailman.qth.net, national at mailman.qth.net
> Message-ID: <9d30.717772a7.38ccf35a at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
> I have Coil set 4, RAS-2, 2-4 MHz, date code 1940 and Coil set 3, RAS-5,
> .9
> to 2 MHz, date code 1943. I wish to sell them for $55.00 each or best
> offer
> plus shipping. Interested, please email me off the list. Thank you.
>
> 73 de WA4USO Darrell Darby
>
>
> ------------------------------
>
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>
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> End of Boatanchors Digest, Vol 74, Issue 15
> *******************************************
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