[Elecraft] disabled controls during TX

[k6rb at baymoon.com]

Even the FT-1000D would not let you change RX filters during XMT.

Rob K6RB

> I agree, the K3 certainly does have more RX things locked while
> transmitting than my MP,  but the MP had some as well.
>
> I seem to recall that this is also true of other software defined
> radios like Flex, but others can comment on that.  All of the K3
> controls are effectively encoders, including the rf/af gain controls
> which divide off a standard voltage and are converted to digital
> before they are used for anything and must be processed to have
> effect.  In a completely analog radio, each pot is always connected to
> its own circuit.
>
> The shift/width/speed/cmp controls are encoders only and tell the CPU
> when they are being turned and which direction, They can only only
> have an effect when the CPU is paying attention to them.  There is no
> end of pot or physical range limits on them.  They do not retain their
> state like rf/af controls.  In order to be continuously responsive,
> the firmware program(s) would have to be constantly running a state
> function for each of them, even while creating the transmit envelope
> from digitized input.  This could be disproportionately more difficult
> code or disproportionately more use of processing resources. Using
> encoders allows multiple functions for each knob, which would not be
> possible with if they were pots.
>
> But someone from Elecraft would need to comment to the rationale of
> freezing a given RX setting during TX and whether any unfreezing is on
> the firmware-to-do list.
>
> I know they have gone through at least two phases of optimizing code
> for resource use.
>
> I have to be careful myself -- I tend to be irritated by anything that
> is different, and there is a LOT in a K3 different from an analog
> radio.  So far none of them are deal breakers, and me getting used to
> them has been the real issue.  I was still fussing a year later about
> my new FT1000MP.  But when it was all over, were it not for fixing the
> key clicks, the quite crushable front end, and all the IM crap it
> added to the ambient band noise, it would still be my favorite, just
> because matched INRAD 8 pole filters in both IF's for all modes and
> bandwidths really worked well for selectivity AND I was finally used
> to the menus and knobs and rarely had to look anything up in the
> manual.  My new rig angst isn't particular to the K3, it's just me.
> It's new anything angst.
>
> I hate changes, I hate surprises, yada, yada, but that's my problem.
> Were it not for four years non-contest operating with a K2, the K3
> analog-to-digital-disconnect change together with panel changes may
> have been a deal breaker with where-the-h*ll-are-the-band-buttons,
> etc. But I had already figured out I could hear way better on any band
> with my K2 than the MP, and my brain's anti-change barking dog was
> regularly whipped back into the corner for the privilege of hearing
> the EU 40m QRP-basement-noodle-antenna crowd on my K3, and realizing
> that the next layer was an apparently inexhaustible layer of Russians
> that points to some *RX* antenna work to get them.  So now I'm getting
> used to the K3, .....
>
> Going to N1MM logger from the DOS-based TR logger was quite more
> irritating than any switching receivers. I was thrown in the deep end
> of the pool, do or die, at a multi-op station with all those other ops
> around me that switched years ago and were very helpful, but couldn't
> quite keep the smirk off their face....
>
> 73, Guy.
>
> On Thu, Apr 1, 2010 at 6:07 AM, HA3AUI <ha3aui at ax.hu> wrote:
>> I wonder if anyone else has noticed, most of the front panel controls
>> are disabled during TX?
>> It's quite annoying during a contest for example, where you could use
>> that little time to make an adjustment eg. change bandwidth, turn on/off
>> preamp etc. before the rig returns to RX.
>> I've never ever seen this behavior on any other rig that I own.
>>
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