K2 working

[lstavenhagen]

In case anyone's interested, I just completed my erstwhile dead K2 and it appears to be in good health on all bands after the final alignment.

Whew... I dodged a bullet on this one lol....

The transmitter came out particularly good, ranging from about 11 to 12 watts max on 10M up to around 14W max on 80 (on a 12v 9AH battery). I was extremely careful with winding the transformers in this rig, T2 in particular and positioning it above the board a bit as specified, moreso than in my first K2. So it actually outperforms my first K2 by almost a watt on 10 and 12M lol. Either that or the first one just needs realigned which it probably does.

The RX seems to be fine on all bands too according to my XG3.

All that's left is the final assembly and then I'll decide what options to put in it. But first I need to take it out /p and use it for a bit to make sure it's all good. I can use my X1 external antenna tuner for that....

Anyway, thank goodness. It lives!

Tnx es 73,
LS
W5QD

[Kevin Stover]

Congratulations!
You were ready to make an anchor out of a week ago.

On 4/17/2016 5:28 PM, lstavenhagen wrote:

> In case anyone's interested, I just completed my erstwhile dead K2 and it
> appears to be in good health on all bands after the final alignment.
>
> Whew... I dodged a bullet on this one lol....
>
> The transmitter came out particularly good, ranging from about 11 to 12
> watts max on 10M up to around 14W max on 80 (on a 12v 9AH battery). I was
> extremely careful with winding the transformers in this rig, T2 in
> particular and positioning it above the board a bit as specified, moreso
> than in my first K2. So it actually outperforms my first K2 by almost a watt
> on 10 and 12M lol. Either that or the first one just needs realigned which
> it probably does.
>
> The RX seems to be fine on all bands too according to my XG3.
>
> All that's left is the final assembly and then I'll decide what options to
> put in it. But first I need to take it out /p and use it for a bit to make
> sure it's all good. I can use my X1 external antenna tuner for that....
>
> Anyway, thank goodness. It lives!
>
> Tnx es 73,
> LS
> W5QD
>
>
>
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--
R. Kevin Stover
AC0H
ARRL
FISTS #11993
SKCC #215
NAQCC #3441


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[lstavenhagen]

Yes, like I said, I dodged a bullet on this build for sure, hi hi. Here are two pics of the completed board, the bandpass filter relays is where I did all the damage but fortunately now it's not even visible and it all seems to be working. And the toroids came out better in this build than my first K2 also. Some of em look like the builder might have known what he was doing! sort of.. hi hi.

Final assembly will proceed tomorrow, though I'm not putting any options in it until I've used it on the air a bit to check it out and burn it in...

73,
LS
W5QD