[Elecraft] Re: K3: S-meter calibration (redux)

[Toby Deinhardt]

Hallo Bill,

> user-programmable. We now have the opportunity, given this new feature, 
> to experiment and see what really works best, and make a LOGICAL case 
> for establishing that as a standard.

6dB makes a lot of sense to me: 1 S-unit = 6db = factor 2 in voltage.

This is the Region 1 recommendation:
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IARU Region 1 Technical Recommendation R.1

BRIGHTON 1981, TORREMOLINOS 1990

STANDARDISATION OF S-METER READINGS

1. One S-unit corresponds to a signal level difference of 6 dB,

2. On the bands below 30 MHz a meter deviation of S-9 corresponds to an 
available power of -73 dBm from a  continuous wave signal generator 
connected to the receiver input terminals,

3. On the bands above 30 MHz this available power shall be -93 dBm,

4. The metering system shall be based on quasi-peak detection with an 
attack time of 10 msec ∀ 2 msec and a decay time constant of at least 
500 msec.
------------------------------------------

But *MUCH, MUCH* better is Wayne's plan to display dBm.

I do wonder what timing Wayne will use.

vy 73 de toby
-- 
DD5FZ, 4N6FZ (ex dj7mgq, dg5mgq, dd5fz)
K2 #885, K2/100 #3248
K3/100 #??? (< #200)
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