[chirp_users] Chirp and the volume control

[Ken]

I put mine on a scope and watched the data stream.  The volume control 
had no effect on the data.  If it works for you and you believe it.  I 
can see why Jim put it in Chirp.

73  Ken


On 08/23/2016 07:59 PM, Donnie Tate wrote:
> 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 
> <mailto:rock.unroe at gmail.com>> wrote:
>
>     On Mon, Aug 22, 2016 at 11:30 PM, Frederick R. McDougall
>     <frmcdo at gmail.com <mailto: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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