To: | Bob Alexander <realex@flash.net> |
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Subject: | Re: [Amps] 10 DB increase |
From: | David Kirkby <david.kirkby@onetel.net> |
Date: | Sat, 05 Feb 2005 14:34:01 +0000 |
List-post: | <mailto:amps@contesting.com> |
Bob Alexander wrote:With a modern receiver, it would be relatively easy for the manfacturer to correct for this. An A/D to measure the AGC voltage and a D/A to drive the meter, with a trivual bit of processing in between. In fact, it would not even need a processor, as an EPROM or other non-volatile bit of memory could do it using a lookup table.I went back to the archive to find the original question. S-meters do not measure received signal level accurately because they do not measure the signal but rather the level of the AGC voltage required to maintain a constant audio level output. Whether you would consider it worth while is another matter, but given all the bells and whistles on modern equipment, perhaps a calibrated S-meter would be less useless than some of the other things. G8WRB Please check out http://www.g8wrb.org/ of if you live in Essex http://www.southminster-branch-line.org.uk/ _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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