While thousands may use VOX, at least thousands use PTT. One reason is
that sound cards are rarely response flat, so the levels will change
according to the frequency of the tone. This means that the VOX may/not
be activated by the current tone or may not hold if on the edge of the
required level. If you never change the frequency of the tones (as in
point and click PSK or by using FT8 in DXpedition/split mode) it may not
be an issue for you. I've found it to be less reliable than PTT.
I rarely use VOX at all (except on CW for full break in), if only to
keep background noises (other radios for example) from making it
complicated.
Software PTT is not flaky. That is insulting to both the software
authors and those that designed the radio to accept the PTT command. In
point of fact, it's more reliable than VOX has been because it isn't
level driven, just simply on or off.
The issues you may have had with PTT could be the virtual ports often in
play, it's a wonder those work at all. I use real serial ports, no
sharing, using the KISS principle and have never had a software PTT
issue. I also find real serial ports less RF sensitive (FAR easier to
shield), therefore more reliable than USB which often locks up in the
presence of strong RF.
Rick nhc
On 10/1/2018 4:42 PM, Wes Stewart wrote:
The following is nothing personal.
I use AFSK on RTTY. That's "Audio" FSK. On SSB, an audio mode, I
like thousands of other folks, use VOX, not some flaky software PTT.
Why on Earth when using a different audio mode should I have to use a
different method of T/R switching, particularly when the audio signal
is a constant level? Makes absolutely no sense to me.
N7WS
On 10/1/2018 3:42 PM, Tom wrote:
No need for VOX, just use software PTT.
Tom
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