Mike:
Thanks for your e-mail. Something new learned that was
old. I built my K1 in 2003, my only HF rig at present,
I never knew this.
This is what makes this reflector so useful.
73, Ty, W1TF, K1 #1423
--- Mike Morrow <[EMAIL PROTECTED]> wrote:
> This topic will be old stuff for most K1 users, but
> it was
> new to me. I've had a K1 with KAT1 for 7 years.
> After all
> that time, it was only last week that I found that
> the firmware
> controlling the KAT1 (version 1.3) is more versatile
> than I
> realized.
>
> The KAT1 manual describes the use of the Auto-Tune
> function
> (KAT1 ATU mode set to "tun") as follows:
>
> Quote
> ⢠Enter TUNE mode. Power will be reduced to about
> 1.5 watts and
> displayed briefly, then SWR will be displayed
> while the ATU
> matches the transmitter to the load (usually 1-5
> seconds)...
> ⢠When you no longer hear any relays switching,
> tune-up has
> completed, and the final SWR is displayed. At this
> point you
> can optionally tap WPM+ or WPM- to change the
> selected power
> level...
> Unquote
>
> But what actually happens if WPM+ or WPM- is tapped
> after ATU
> relay operation stops (and SWR is still displayed)
> is better:
>
> 1. Output power changes from the low level used for
> auto tune-up
> to the power level that the K1 has been set to
> put out.
> 2. The LCD displays the actual power output, and
> NOT the power
> selected, as implied by the manual. (Actual
> power output may
> be lower than the power that was selected if,
> for example, the
> K1 supply voltage is low, or filter board
> alignment is
> slightly off.)
> 3. As WPM+ or WPM- is pressed, the display of
> actual power output
> changes as the selected power level changes.
>
> The way that this works (as opposed to the way it is
> described) is
> very useful and well-designed. I should have
> discovered this years
> ago.
>
> Mike / KK5F
> (K1 SN 175 ... Still my favorite QRP rig)
> _______________________________________________
>
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