[Elecraft] KPA500 WS power resolution

[ANDY DURBIN]

It seems that at least one person was confused by my data.   Let me try again, this time including data for each step rather than just the data that bracketed the WS power transitions:


LP-100A   WS

24.9         00

25.8         10

26.4         25

28.7         25

29.8         30

33.4         30

33.9         30

34.6         30

35.8         30

36.5         30

37.7         30

38.4         30

39.6         30

40.3         40

The question remains the same.  Is the low resolution of WS indicated power intended?

73,
Andy k3wyc
________________________________
From: ANDY DURBIN <a.durbin at msn.com>
Sent: Friday, May 18, 2018 10:47 AM
To: elecraft at mailman.qth.net
Subject: Re: KPA500 WS power resolution


Sorry, there was a typo in the table.  It should read:


WS pwr  LP100 pwr

00            24.9

10            25.8

25            26.4   <

25            28.7

30            29.8

30            39.6

40            40.3


73,

Andy k3wyc



________________________________
From: ANDY DURBIN <a.durbin at msn.com>
Sent: Friday, May 18, 2018 10:40 AM
To: elecraft at mailman.qth.net
Subject: KPA500 WS power resolution


The KPA500 provides the ^WS; serial interface interrogation which returns output power and SWR.  The power and SWR are reported for STBY and OPER modes.   In OPER mode the power seems to have a resolution of 1 Watt.  In STBY, if I increment my drive power in 1 Watt steps the power reported by ^WS;  jumps from 30 to 40 with no intermediate steps.


WS pwr  LP100 pwr

00            24.9

10            25.8

25            29.4

25            28.7

30            29.8

30            39.6

40            40.3


Is this very low resolution of WS power in STBY mode intentional? (firmware 1.54).


Thanks,

Andy k3wyc