[Elecraft] 30-80 module for the kx1

[Leigh L. Klotz, Jr.]

Some guy here.  Yes, Lloyd K3ESE and I both experience this problem.  
Before the 3080 board, mine put out 3.5W-4W on 13.8v.
Afterwards, it's down to 2W.  It didn't keep me from making a nice 80M 
contact which I reported here along with the problem.

It's possible I've made a building mistake and the fix will just be 
clearer instructions for me to follow better.
I'm confident that Wayne's fix will help when it comes out, but I 
suspect I'll be re-winding my LPF again.

Leigh / WA5ZNU

Ron D'Eau Claire wrote:
> Alex NS6Y wrote:
>
> to change the toroids in the 3080 module, the present one lowers the 
> KX1's power to 2W across the bands. Is this true? My kx1 comes 
> tomorrow, with the 3080 backordered, and I don't mind, I'm sure 
> Elecraft will come up with some new version that increases output 
> across the bands hihi!
>
> ---------------------------------
>
> Stand by. I think Wayne's away this weekend, but there is a solution in the
> works. 
>
> All along a *few* KX1s have exhibited lower output, apparently due to normal
> manufacturing variations in the transistors. Gary at Elecraft support has
> helped owners make a few mods that corrected the problem on an individual
> basis. 
>
> The KXB3080 seems to exacerbate this effect on some KX1s while others
> happily pump out full power. This problem didn't really become obvious until
> after the Field Test was completed. Several days ago Wayne went into
> Warp-Drive to evaluate the issue and validate a solution for those who
> experience it. As of Friday I understand the fix was tested and ready to
> implement for those who need it so all KX1s will put out somewhere between 3
> and 4 watts with a 14 VDC supply and 1 to 1.5 watts on the internal battery,
> including those equipped with the KXB3080.
>
> Look for more announcements to show up in the next couple of days. The
> bottom line is that your KX1 will meet the full specifications with or
> without the KXB30 or KXB3080 modules installed. 
>
> Ron AC7AC 
>
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> 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
>