[arm-allstar] Tx A Level Setting

[Doug Crompton]

Chris,

 Do you mean a drop out or cut off of the beginning of the audio? This
could be caused by a slow opening PL on your handheld or RX radio. Try
turning off RX PL  if you are using it or opening the squelch and see if it
does it then.


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*


On Mon, Dec 11, 2017 at 11:24 AM, Chris Souleles <csouleles at prodigy.net>
wrote:

> Thanks Doug.  I've been using *81 as I adjjust it.  I've also listened to
> the WIN System through my local repeater and compared with my node and they
> are very close to the same level, so I guess I have it about right.
>
> The only thing I have noticed is that when I do *81 sometimes I get a
> short drop out of the audio.  Not sure if this is due to RF interference or
> something else.  I don't notice any drop out when I'm talking with other
> stations.
>
> Chris - W6CS - 73
>
>
> ------------------------------
> *From:* Doug Crompton via arm-allstar <arm-allstar at hamvoip.org>
> *To:* ARM Allstar <arm-allstar at hamvoip.org>
> *Cc:* Doug Crompton <wa3dsp at gmail.com>
> *Sent:* Monday, December 11, 2017 8:15 AM
> *Subject:* Re: [arm-allstar] Tx A Level Setting
>
> Chris,
>
> This is not terribly critical on a local node. If you were driving a
> repeater or wide area node you would want it to be a little more precise.
> The wider the deviation the louder the audio signal up to a point where it
> goes out of the RX bandwidth and becomes distorted. I generally tell people
> who do not have the equipment to adjust it to listen to a local repeater on
> their radio and keeping the volume level constant tune to their node
> output. The audio level should be about the same. Adjust if necessary. Also
> keep in mind that the audio level of the signal you are listening to may
> not be adjusted correctly at their end so you need to average this. You can
> also use the ID or time outputs to do this adjustment - *80 or *81.
>
>
> *73 Doug*
>
> *WA3DSP*
>
> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>
>
>
> On Mon, Dec 11, 2017 at 10:32 AM, "Chris Souleles via arm-allstar" <
> arm-allstar at hamvoip.org> wrote:
>
> > What is the best way to determine correct setting for Tx A Level?  Now
> > that I have added a voltage divider on the audio line between the FT7900
> > and the DMK URi it has put it within the SW adjustment range, but I don't
> > know how to determine the best setting.
> > The Rx side is working well with Rx Level at 500, pre-emphasis on, Rx
> > boost on and voice peaks just at 5Khz.
> > The node is FT7900, DMK URi, RPI3.
> > Thanks,  Chris - W6CS - 73
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