[R-390] R390A Audio Meter FS

[David Wise]

I would be delighted if they were the same.
There's no compelling technical need for them to be
different, but VU meters for a 600-ohm line are a
standard item.

Dave Wise

>-----Original Message-----
>From: r-390-bounces at mailman.qth.net 
>[mailto:r-390-bounces at mailman.qth.net] On Behalf Of rbethman
>Sent: Wednesday, September 22, 2010 6:22 AM
>To: r-390 at mailman.qth.net
>Subject: Re: [R-390] R390A Audio Meter FS
>
>  Well, I "screwed the Pooch" in regard to the meters.
>
>Being human is a B&%*#@ !
>
>Bob - N0DGN
>
>On 9/21/2010 7:16 PM, Stephen M. Murphy wrote:
>> In my Motorola, the meters are definitely not the same: Line 
>is set up
>> for measuring AC and Carrier for DC. The Carrier meter 
>cannot be used in
>> the line position; it'll just bounce about the left peg.  No 
>question...
>> done it before.
>>
>> I suspect that the line meter would show at least some deflection if
>> wired into the carrier circuit with the correct polarity.  This is an
>> educated guess, haven't tried it myself.
>>
>> If I recall, the specs are different for the two meters; 
>about 3500 Ohms
>> for the Line and 17.5 for the Carrier.
>>
>> Dunno if they varied over the years, but that's how mine is...
>>
>> 73
>>
>> Steve N8NM
>