[chirp_users] Chirp and the volume control

[Donnie Tate]

Mine would not program without the volume control turned up.

On Tue, Aug 23, 2016 at 6:14 AM, Jim Unroe <rock.unroe at gmail.com> wrote:

> On Mon, Aug 22, 2016 at 11:30 PM, Frederick R. McDougall
> <frmcdo at gmail.com> wrote:
> > On my uv5rc unit the volume control does control the volume of the
> > speaker/mic.
>
> As it should. The volume control controls the level of audio to the
> internal speaker and to a external speaker properly connect to the
> audio out lines.
>
> >  Thus it would also control the amplitude of the radio to
> > computer signal while reading the radio.
>
> Incorrect. As I mentioned earlier, the radio communicates with the
> computer via a TTL level serial communication (+3.3 volts/0 volts).
> There is no speaker out or mic in audio involved. There aren't even
> any wires connected to the audio out or mic in because they are not
> needed or used for serial communications.
>
> It is not AFSK (audio frequency shift keying) like over-the-air
> digital communications. That would be an added complexity that isn't
> required.
>
> Jim KC9HI
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-- 
Donnie L. Tate
185 Memory Lane Drive
Gate City  VA  24251
276-386-7677
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