[Elecraft] K2/100 Flat topping on 30m?

[kc4kgu@EnterZone.Net]

On Wed, 30 Oct 2002, peter barville wrote:

> Hello John
> 
> >I haven't seen any flat topping on any band.  Just a nice
> >"christmas tree on its side" like you should see with a SSB signal.  
> 
> But have you used ssb on 30m?  I'd guess not, so wonder if you could do
> a quick test for me (into a dummy load)?
> -- 
> 72, peter g3xjs
> 


I think you're on to something!  At 100w, it definately does look like
it's flat topping.

I conducted the following tests at 10110.00Khz LSB at 50w and 100w.

50w looks just like it should.  100w looks flat-topped.

For comparrison, there is also a pic taken at 18.13200Khz USB 100w.

You can see the pics of the scope at http://www.kc4kgu.com/k2-30m/

The top trace is RF, the bottom trace is AF driving the K2.

What does everyone else think?

PS: Sorry for the picture quality.  I hadn't tried to shoot pics of my
scope before. <grin>

73 de John - KC4KGU
K2/100 #2490
Elecraft WAS #8