[R-390] Meters

[Roy Morgan]

On Sep 5, 2009, at 10:34 PM, Barry wrote:

> http://www.skirrow.org/Boatanchors/TechTalk2.pdf

Thanks to Barry for posting that link.  That page mentions that the RF  
level meter is a one ma movement (I was mistaken), but points out that  
the internal resistance is not the same as other meters  you are  
likely to find.  Here are a couple of posts from much earlier that  
give more details:

> Date: Wed, 6 Jan 1999 20:20:56 EST
> From: DCrespy at aol.com
> Subject: [R-390] Meter Specs
> The Carrier meter is a 1 mA movement, but the key to getting it to  
> work is the
> internal resistance.. From HSN, I've heard that the movement should  
> be 17
> ohms. I have measured new and used ORIGINAL meters around 17 to 20  
> ohms.
> I have have good luck making 35 to 40 ohm meters work. I could not  
> get the
> most common 100 ohm one to work well. The Line Level meter is a  
> regular AC
> Vu meter. Harry KG5LO Saline MI
> ------------------------------
> Date: Wed, 06 Jan 1999 22:13:34 -0500
> From: Will Schendel <n8azw at megsinet.net>
> Subject: Re: [R-390] Meter Specs
> I just measured four ORIGINAL used Simpson carrier meters that seem  
> to work
> well, they read 17.3 to 18.0 ohms resistance. Hope this helps to  
> confirm the meter
> resistance question...
> ------------------------------

Roy

Roy Morgan
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