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

_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

Reply via email to