[Elecraft] Power measurement with a 'scope

[George, W5YR]

It would be a good idea to measure the resistive component of the dummy
load impedance with a reliable impedance analyzer at the frequency of
interest. Its DC resistance will probably be around 45-46 ohms - my
Cantenna has been for 31 years now - but what you need to use for
converting the voltage measurement from the scope to power is the value of
resistive component at the frequency you are using.

72/73/oo, George W5YR - the Yellow Rose of Texas         
Fairview, TX 30 mi NE of Dallas in Collin county EM13qe   
Amateur Radio W5YR, in the 56th year and it just keeps getting better!
QRP-L 1373 NETXQRP 6 SOC 262 COG 8 FPQRP 404 TEN-X 11771
Icom IC-756PRO #02121  Kachina #91900556  IC-765 #02437

All outgoing email virus-checked by Norton Anti-Virus 2002


John Buck wrote:
> 
> Do not forget to consider that the old Heath cantenna is probably about
> 40 ohms instead of the original 50.
> 
> Aloha,
> John KH7T