[Elecraft] K3/KX3 Operating Tip: APF (audio peaking filter) for weak-signal CW work

[Pierfrancesco Caci]

>>>>> "Ian" == Ian White GM3SEK <gm3sek at ifwtech.co.uk> writes:


    Ian> Wayne Burdick wrote:
    >> on the K3, it's labeled "DUAL PB" (hold). The K3 actually provides two 
    >> different special filter functions; use the DUAL PB menu entry to set 
    >> up the switch for APF.

    Ian> On the K3, it would be really helpful to have an option to reconfigure 
    Ian> that button on the K3 as "tap = APF" so that we don't have to lose "hold 
    Ian> = DUAL PB".

    Ian> "Tap = APF" would also bring the K3 into line with the KX3.

    Ian> Obviously APF and DUAL PB cannot both be selected at the same time, but 
    Ian> it would still be helpful to have either one available QUICKLY on the 
    Ian> same button.

    Ian> No XFIL users would be inconvenienced by making this a configuration 
    Ian> option.


I'd hate to lose the possiblity to quickly tighten the filters with one
tap (think digimodes, where you switch from looking at a 3 kHz waterfall
down to a single psk signal with just 3 presses of that button).
What about long hold (more than 3 seconds)? I think long hold is already
used somewhere else in the firmware, so the function to recognize it is
already there. 

Pf

-- 
Pierfrancesco Caci, ik5pvx