K3 Wattmeter Calibration

[Roy Morris-6]

I found the WMTR LP and WMTR HP menus and made the appropriate adjustments.  My power output is now 96.7 to 99.4 watts on all bands except 10 meters.  The output on 10 meters is 91.0 on 28 and 91.6 on 29.7.  Is this power output on 10 meters normal?    Thanks.  Roy Morris  W4WFB  K3 #323
_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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

[dj7mgq]

Hi Roy,

> except 10 meters.  The output on 10 meters is 91.0 on 28 and 91.6 on  
>  29.7.  Is this power output on 10 meters normal?    Thanks.  Roy

It is a bit lower than what my K3 does on 10m, but then again 91W:100W  
is only a 0.4dB difference. Our power meters are likely to disagree by  
more than 0.4dB, so personally I do not think this is reason for worry.

vy 73 de toby

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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

[Bill W4ZV]

Roy Morris-6 wrote

I found the WMTR LP and WMTR HP menus and made the appropriate adjustments.  My power output is now 96.7 to 99.4 watts on all bands except 10 meters.  The output on 10 meters is 91.0 on 28 and 91.6 on 29.7.  Is this power output on 10 meters normal?    

Mine was also a little lower on 10m than the other bands.  The following was measured with requested power set to the 120W maximum.

http://www.nabble.com/K3---internal-TX-PWR-meter-accuracy--td15274707.html

Using N8LP's LP-100 (factory calibration) after calibrating at 50W per the manual:

Band        Max Power (set to 120W)

160          110.0
80            111.7
60            112.8
40            105.0
30            111.9
20            111,7
17            110.5
15            109.7
12            111.1
10            106.9
6              109.7

"Power accuracy is better than 5% at any frequency from ~1W to maximum, 3% typical with NIST traceable factory calibration"

http://telepostinc.com/lp100.html

73,  Bill  W4ZV