WA3FIY wrote:
> There are disadvantages to using PTT as you describe. I
> posted an example yesterday, but repeat it here. On the
> other had, it is quite simple to accomplish the "PTT" controlled
> function by connecting the computer CW PTT output to the
> amplifier control input in parallel with T/R output of the radio.
> No changes to the radio necessary. This seems to be getting
> lost in the noise.
> REPOST
> Yes there are disadvantages. Here I use the PTT line for
> multiple functions. As a PTT line when on SSB, as a CW keying
> line when sending CW from my computer and as a PTT line when
> on RTTY/SSTV/PSK. The last two functions use a single
> interface line from my computer which is effectively in parallel
> with the mic PTT switch. The same line keys the rig on CW
> and puts it into transmit for the sound card modes. This would
> not be possible if the PTT line was configured as you suggest.
Various patches are possible, but it is somewhat discomforting
to know that a simple thing like this one has to be patched
on a otherwise fine radio.
But if TenTec says that CW PTT cannot be provided
by a firmware change, the world has to live with patches.
I find suggestions like this one much more productive
than "Let'em eat [QSK] cakes". And as K3BU explained,
this is not a "PTT vs QSK" race at all. Both are needed.
73 & Happy New Year,
Sinisa YT1NT, VA3TTN
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