[R-390] R390A Carrier Level Meter Question

Roy Morgan roy.morgan at nist.gov
Mon Aug 23 13:16:20 EDT 2004


At 08:33 PM 8/22/2004 -0400, Les Locklear wrote:
>
>FS = 1 Ma. Full scale 1 Milliamp.


Yes, but there's more.

Not just any 1 ma full scale meter of the right size will work.  The 
original meters had an internal resistance of 17 ohms or some such.  Hard 
to find. Not impossible to have made but they's cost some $100 each if we 
ordered over a hundred.

There have been a number of articles and web pages that describe how to use 
other meters instead of the original one.

Roy


- Roy Morgan, K1LKY since 1959 - Keep 'em Glowing!
7130 Panorama Drive, Derwood MD 20855
Home: 301-330-8828 Work: Voice: 301-975-3254,  Fax: 301-948-6213
roy.morgan at nist.gov --



More information about the R-390 mailing list