[Elecraft] [K3S] mW TX for WSPR

[donovanf at starpower.net]

Hi Bret, 


When using the DXplorer.net simultaneous receive measurement 
system, its best if you have the capability to start your testing 
by simultaneously transmitting through a Magic-T combiner 
into a single antenna. 


In less than 30 minutes you'll have enough data from DXplorer.net 
to calibrate out any power output difference between the two 
transmitters. After you've completed the calibration you're ready 
to connect each WSPR transmitter to the antennas under test. 


73 
Frank 
W3LPL 

----- Original Message -----

From: "MaverickNH" <cbjesseeNH at comcast.net> 
To: elecraft at mailman.qth.net 
Sent: Tuesday, May 16, 2017 6:37:31 PM 
Subject: [Elecraft] [K3S] mW TX for WSPR 

I'm trying to fiddle the TX power on my K3S using WSJT-X WSPR 1.7 on a 43ft 
Vertical to match the 200 mW output of a WSPRlite over a random wire dipole 
antenna, using the DXplorer.net simultaneous RX measurement system 
https://tinyurl.com/mthms72 . Is TX wattage continuous with rotation of the 
PWR knob? It has 0.1W decrements and I seem to find equal performance 
between 0.6 and 0.7W on the K3S and was curious if halfway between 0.6 and 
0.7W as I rotate the knob is 0.65W? I can imagine precision of TX power 
isn't accurate to more than +/1 0.1W but thought I'd inquire. 

Bret/N4SRN 



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