[Elecraft] K3 dbV in 2.38

[Kok Chen]

On Sep 16, 2008, at 5:07 PM, Augie Hansen wrote:
> Jim Brown wrote:
>> ...
>> Hold on a minute. We cannot sit over in our little corner and  
>> pretend that the rest of the world does not exist. That's how we  
>> got into trouble with the KIO3.
>> dBV is a voltage measure with a reference of 1V RMS. It's an  
>> international standard. If a K3 function does something else, it  
>> needs to be called something else.
>
> Agreed. If dBr is not already taken how about using it to mean "dB  
> relative"? My searches have turned up no conflicts for this  
> designation as it relates to voltage measurements.

I agree with both of you.

However, just a small nit...

dB (decibel) is already a relative measure, with no units.

When another letter is appended, it turns the value to an absolute  
measure (m for miiliwatts, V for 1 V RMS, u for 0.775 V RMS, etc).  If  
you use dBr, you'll need to define what unit "r" is in.  I.e., dBr is  
no longer just a ratio, but a value that is relative to 1 "r".

73
Chen, W7AY