[Elecraft] K3 PTT -- done!

[David Ferrington, M0XDF]

I too would like to be able to send low power RF to my SGC to tune it.

I'm NOT asking for a f/w change right now, my suggestion below requires it
be incorporated with the capability of controlling the KAT3 on individual
antennas.

A menu option that sets the power you wish to use. The function is invoked
via the 'ATU TUNE' button and sends a carrier out the current ANT socket for
as long as the button is pressed (is it possible to press a button in this
way?). 

This would save using one of the PF buttons and since with the KAT3 'off'
for that antenna, the button is 'free' it's a logical, labelled choice
(external 'ATU TUNE').

I think there was discussion of being able to key this via the ACC connector
and that would work well for me too - using a push button on a lead.


It's possible to put the Yaesu FT-897 into 20W carrier transmit by grounding
a 'little brown wire', indicating the rig is on battery power (limits power
to 20W) AND grounding the ring of the ACC connector, intended to 'key' the
rig.

I'd like to be able to use a lot less power than that, the SG-237 will tune
up on 3W.


On 25/9/07 06:32, "Dave G4AON" <elecraft at astromag.co.uk> sent:
> A useful feature that was mentioned a long time ago (and put on the back
> burner I think), was adding a programmable transmit feature to one the
> "PF" buttons to give a carrier for linear/ATU tuning. I have this
> feature on my Kenwood TS-480 and find it invaluable. Pressing thw 480's
> PF button toggles a carrier on and off (regardless of mode), the carrier
> level can be adjusted while it's transmitting via the normal power
> setting route and can be set anywhere from 5 to 100 Watts in one Watt
> steps (the power setting limits of the 480). The power level is stored
> and occurs regardless of the main power level setting, so for example if
> I'm set for 5 Watts of QRP CW, pressing the button gives me 10 Watts for
> the external MFJ auto ATU. If I'm using my valve linear and have the 480
> set at 25 Watts on SSB, pressing the PF button gives me 10 Watts to tune
> the linear with. This is similar, if not the same functionality, as
> those external 3rd party button boxes do for the Yaesu FT817/857/897 rigs
-- 
The high minded man must care more for the truth than for what people
think. -Aristotle, philosopher (384-322 BCE)