[arm-allstar] Tx A Level Setting

[Doug Crompton]

Chris,

 It should work but some radios are slow to open and also radios like the
THF6A have a battery save feature that basically keep the radio off and
scans every period to see if there is activity. So if this is turned on it
is really slow on the first words when it wakes up.


*73 Doug*

*WA3DSP*

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


On Mon, Dec 11, 2017 at 2:34 PM, "Chris Souleles via arm-allstar" <
arm-allstar at hamvoip.org> wrote:

> Doug - once again you were right.  I turned off the RX tone on the radios
> I use to access the node and now it does not have the audio drop out.  I
> thought it would be good to use the RX tone, but it seems better without
> it.  I still have the TX tone on.
> Chris - W6CS - 73
>
>       From: Doug Crompton <wa3dsp at gmail.com>
>  To: Chris Souleles <csouleles at prodigy.net>
> Cc: ARM Allstar <arm-allstar at hamvoip.org>
>  Sent: Monday, December 11, 2017 8:28 AM
>  Subject: Re: [arm-allstar] Tx A Level Setting
>
> 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
>
>
> 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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