All these numbers are fun but do not mean much. What you do if you
run QRP is learn about propagation. If you have the prop, you work about
as well as a 100 watt station. If you don't, go do something else.
Yes if you run 1500 watts to a good antenna you will get the DX
first. At 5 watts it takes a day or so.
I do the Fox Hunts where we are all 5 watts and run 20 WPM CW. We do
try hard to work each other and it does work well. I got both Fox last
night, one in CO and the other in TX. I live in NM and we were on 80
Meters. Fun.
72 Karl
[EMAIL PROTECTED] wrote:
In a message dated 12/26/06 6:27:25 PM Eastern Standard Time,
[EMAIL PROTECTED] writes:
Transmit power 500 watts S-9 +10 db
50 watts S-9 (+ 10 db over 9)
12.5watts S-8
3.1 watts S-7
You lose 1 S-Unit each time you're reducing power by 1/4.
Yup - *if* the receiver is really 6 dB per S unit.
Now look at these numbers:
Transmit power 1280 watts S-6
320 watts S-5
80 watts S-4
20 watts S-3
5 watts S-2
If the receiving station can't dig out your S-2 signal, no QSO.
One S-unit consists of 6db increase or decrease in received signal
strength. Transmit power must be increased FOUR TIMES to achieve a
signal strength increase of one S-Unit!
A QRP signal is mighty respectable at S-7 on anyone's receiver.
*if* the path is such that you are S-7.
73 de Jim, N2EY
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