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[TenTec] STANDARDISATION OF S-METER READINGS

To: <tentec@contesting.com>
Subject: [TenTec] STANDARDISATION OF S-METER READINGS
From: "Merle Bone" <merlebone@charter.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Thu, 10 Jan 2008 14:19:49 -0600
List-post: <mailto:tentec@contesting.com>
Try without formating :-)


The Orion's S-meter calibration certainly isn't anything to "write home 
about," but it is "representative" of the distant stations signal strength.
Running V1.373b5 I get the following readings using calibrated signal 
generator and attenuator on 14.058 MHz:

Sig Level      Preamp On             Preamp Off            "Standard 
Reading"

50 microvolts          S9+11                S8.1 
S9
-6dB                        S9                    S7 
S8
-12dB                      S8.1                 S5.5 
S7
-18dB                      S7                    S4.5 
S6
-24dB                      S5.8                 S3 
S5
-30dB                      S4.5                 S2 
S4
-36dB                      S3.1                 S2 
S3
-42dB                       S2.1                S1.8 
S2
-48dB                       S1.8                S1.8 
S1

S1.8 is about as low as the S-meter goes on this release of the firmware 
with the RF gain at 100 and the AGC threshold set for .36 microvolts and the 
decay set for 200dB/s.  I use the "calibrated measurements" when I am trying 
to understand antenna performance - particularly "front to back/side" 
measurements.
73, Merle - W0EWM 


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