[Elecraft] K2 and strange power output observations

[RK]

Realligned my K2 today. I used the following setup:

K2 <----> Wattmeter <---> 50 Ohm Load

Wattmeter is a Yaesu YS-60 and gives correct readings on factory new =
radios. Everything was as expected. The power display on the K2 matches =
that on the forward SWR reading on the wattmeter. On 10m I'm geting 10 =
watts - OK my toroids may not be perfect, but that's not the critical =
issue here.

Then I set it up as follows:

K2 <--> Wattmeter <---> Antenna switch <---> HF Antenna

Now I know my antenna is well tuned, especially on 28 MHz, but now I get =
the wattmeter showing 10 watts and the K2 power display reaching a =
maximum of 6.0.

Hmmmm.... I then set it up as follows:

K2 <--> Wattmeter <---> HF Antenna

The K2 and wattmeter both display 10 watts out (as expected).

I then do the following:

K2 <--> HF Antenna

The K2 and displays 10 watts out (as expected).

So the investigation reveals something fishy in the antenna switch. But =
the question is ... why would the K2 show a reading different to that on =
the wattmeter when the switch is in-line - - if its effectively giving =
the 6 watts out, why is the wattmeter showing 10? I know the wattmeter =
works fine because it scales nice and linearly with the K2 when the =
antenna switch is not in-=E6line?

73
Robin
OZ6ABM

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