On 1/6/2014 11:04 PM, Jeff Liebermann wrote:
On Tue, 7 Jan 2014 03:19:54 +0000 (UTC), gregz
wrote:

Jerry Stuckle wrote:
On 1/6/2014 1:28 AM, gregz wrote:
wrote:
"only 3 db", but that's twice the signal. I have mine stacked 12 feet,
but I believe Winegard says either 8 or 10 feet. Mine work swell. +:^] I
got mine just after they were discontinued in 2005/6. Had to email a
number of suppliers until I found the second one. I bet there are some
still in storage somewhere, email different places that sell Winegard,
you may still find one.
John K9RZZ

Twice the signal means twice the voltage, for me.
Greg

Twice the voltage is a 6 db gain. Twice the power is a 3db gain.

Exactly. If I got 1 microvolt, 2 microvolts will be twice the signal.
Greg

Sorta. If you got 1 microvolt, 2 microvolts will be twice the signal
voltage but only 1.414 times the signal power. That's why we have
units of measure to avoid such ambiguities. Just to be difficult,
working with antennas, the "signal" is the field strength measured in
dBuV/M. If you define what you're measuring and specify your units of
measure, you wouldn't be having such problems.


You've got it backwards, Jeff. Twice the voltage is 4 times the power.

1.414 times the voltage would be twice the power.

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