[arm-allstar] DTMF tones not decoded properly

Tue Apr 2 23:41:08 EDT 2019

Brian,

  Yes that is why I sent out the message about the DMK-URI recent
purchases. The input resistive divider has way too much attenuation for the
B chip they are now using. Feeding into pin 9 with a blocking cap bypasses
that. It has generally been my feeling that the on-board divider is
unnecessary and actually limits the versatility of the board but at least
the URI has a direct option brought out to the DB25 so you have the choice.

*73 Doug*

*WA3DSP*

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

On Tue, Apr 2, 2019 at 10:56 PM B Harvey <bharveytwo at gmail.com> wrote:

> Doug,
>
>  After moving my RX audio over to PIN 9 and adjusting the audio levels, I
> finally got the DTMF tones to decode and the got my audio levels high
> enough that I could control the node. I logged in to one of the hubs in
> monitor mode and the incoming audio sounds great. Rather than risk some
> audio problem on a popular hub, I tried connecting to one of the other
> users here. I could connect to his node but he was unavailable for a QSO.
> I'll try again later. So far so good. I was a bit surprised that wiring
> with the components you suggested and with the audio boost off, I needed to
> set my RX audio to 780 for reliable DTMF decode with my CS750. It could
> that that the DTMF level is a bit low on that radio. At that level, it
> wasn't too hard to get past the 5Khz deviation mark. in the Simpletune
> menu. Hopefully it won't be a problem with normal speech.
>
>
>
>
> Brian /  KK6DOQ
>
> On Mon, Apr 1, 2019 at 6:47 AM B Harvey <bharveytwo at gmail.com> wrote:
>
>> Doug,
>>   Huh, I hadn't heard of a power problem and it seems kind of surprising.
>> I figured heat dissipation would be the least of the problems with that
>> model give that it's 75% heat sink. I don't want to be the one to ignore
>> sound advice so I'll scratch that one of the list. I'm about 3/4 of the way
>> done with a radioless node so I should be able to give my URi/RPi a test as
>> soon as I get time to finish. If everything goes well, I can move on to a
>> node radio. I did see the 70cm Alinco in stock at a few of the HRO stores
>> but I rather enjoy a walk in to the toy store. I'll let you know how things
>> pan out with the radioless node.
>>
>> Brian/KK6DOQ
>>
>> On Sun, Mar 31, 2019 at 3:14 PM "Doug Crompton via ARM-allstar" <
>> arm-allstar at hamvoip.org> wrote:
>>
>>> Brian,
>>>
>>>  The problem with the TYT's is TX failures it appears even on low power.
>>> I
>>> am not sure if that was corrected but I found intermittent surface mount
>>> problems even though internally it looks very well made.
>>>
>>> The HRO in stock I quoted was for my store but you can order it from any
>>> store. It will be shipped from the store that has it.
>>>
>>>
>>> *73 Doug*
>>>
>>> *WA3DSP*
>>>
>>> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>>>
>>>
>>> On Sun, Mar 31, 2019 at 4:55 PM B Harvey <bharveytwo at gmail.com> wrote:
>>>
>>> > Doug,
>>> >
>>> >  Okay, thanks for the advice. I thought about heading over to the local
>>> > HRO yesterday but the website said they didn't have any 70cm models in
>>> > stock. Since I'm pretty sure I have all of the parts on hand, I may
>>> try to
>>> > cobble together a radioless node first in order to test the URI and
>>> RPi I
>>> > have so far. As an aside, what problems have popped up with the TYTs?
>>> Is
>>> > that the gobbled display thing? I've heard of it but didn't know it was
>>> > that common or specifically associated with Allstar. As I mentioned, I
>>> have
>>> > one for 220Mhz but don't use it regularly. I would expect my node to
>>> be on
>>> > 24/7/365.
>>> >
>>> >
>>> > Brian / KK6DOQ
>>> >
>>> >
>>> > On Sat, Mar 30, 2019 at 3:31 PM "Doug Crompton via ARM-allstar" <
>>> > arm-allstar at hamvoip.org> wrote:
>>> >
>>> >> Brian,
>>> >>
>>> >>  I f you want a solid easy to interface radio I would go with the
>>> Alinco
>>> >> DR-x35  series. It has a 9 pin D connector on the back. The TYT's have
>>> >> been
>>> >> problematic for extended use Allstar. Some have the 9 Pin like the
>>> alincos
>>> >> and other do not but you can easily install one as there is internal
>>> >> provision for it.
>>> >>
>>> >> Ham Radio outlet has the Alinco's and they are in stock.
>>> >>
>>> >>
>>> >> *73 Doug*
>>> >>
>>> >> *WA3DSP*
>>> >>
>>> >> *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
>>> >>
>>> >>
>>> >> On Sat, Mar 30, 2019 at 2:52 PM "B Harvey via ARM-allstar" <
>>> >> arm-allstar at hamvoip.org> wrote:
>>> >>
>>> >> > Doug,
>>> >> >
>>> >> >    I didn't really expect something to be wrong with the DMK URI.
>>> As for
>>> >> > disconnecting the speaker, I did it mainly to make assembly and
>>> >> disassembly
>>> >> > easier, I can still use the lapel mic. I think my next step may be
>>> to
>>> >> > recheck the solder joints. If that doesn't work, I'm not sure where
>>> to
>>> >> go
>>> >> > with the UV 82.
>>> >> >
>>> >> >    As far as radios go, what radios are you aware of that are
>>> popular
>>> >> and
>>> >> > work well as a node radio? I'm not married to the idea of using an
>>> HT
>>> >> as a
>>> >> > node radio. I just happened to have the UV 82 laying around and
>>> rarely
>>> >> > used. I don't intend to go mobile with this node rather, it'd stay
>>> at
>>> >> home
>>> >> > are remain permanently wired in place. I have a TYT 9000 in 220mhz
>>> and
>>> >> it
>>> >> > seems like an okay radio. I was thinking of the same model in 70cm
>>> as I
>>> >> > understand they have a header that allows aux connections. It just
>>> >> needs to
>>> >> > be brought to the outside of the radio. The Alinco DR435T is also a
>>> >> > reputable choice from what I hear but no one seems to stock them.
>>>  I
>>> >> like
>>> >> > Kenwood mobiles as well. Are you aware of any of those that would
>>> work
>>> >> > without major surgery such as realignment.? (I don't have the tools
>>> for
>>> >> > that)
>>> >> >
>>> >> >
>>> >> > Brian / KK6DOQ
>>> >> >
>>> >> > On Fri, Mar 29, 2019 at 10:34 PM "Doug Crompton via ARM-allstar" <
>>> >> > arm-allstar at hamvoip.org> wrote:
>>> >> >
>>> >> > > Brian,
>>> >> > >
>>> >> > >  Not sure what to say. If you have taken the 4.7 K resistor to
>>> pin 21
>>> >> out
>>> >> > > and it still needs to be a max level with boost on there is
>>> something
>>> >> > > different in that radio or possibly the DMK is not functioning
>>> >> properly
>>> >> > > which would be unusual. Minus test equipment like a scope it
>>> would be
>>> >> > hard
>>> >> > > to diagnose. BTW there is no reason to disconnect the speaker. It
>>> is
>>> >> good
>>> >> > > to leave it connected for testing. All you need to do is turn it
>>> down.
>>> >> > The
>>> >> > > volume control should have no effect on the rx level if you
>>> connected
>>> >> to
>>> >> > > the high side of the pot.
>>> >> > >
>>> >> > >
>>> >> > > *73 Doug*
>>> >> > >
>>> >> > > *WA3DSP*
>>> >> > >
>>> >> > > *http://www.crompton.com/hamradio <
>>> http://www.crompton.com/hamradio>*
>>> >> > >
>>> >> > > On Sat, Mar 30, 2019 at 12:28 AM "B Harvey via ARM-allstar" <
>>> >> > > arm-allstar at hamvoip.org> wrote:
>>> >> > >
>>> >> > > > Doug,
>>> >> > > >
>>> >> > > >
>>> >> > > >    This is the link to the Hamvoip.org  tutorial for using an
>>> >> Baofeng
>>> >> > UV
>>> >> > > 82
>>> >> > > > as a node radio. ( https://hamvoip.org/hamradio/UV82_mod/
>>> >> )According
>>> >> > to
>>> >> > > > it,
>>> >> > > > there is a 4.7Kohm resistor in series with the lead to Pin 21. I
>>> >> > > confirmed
>>> >> > > > this and measured the resistance to confirm before I removed it.
>>> >> (FYI,
>>> >> > > > there's also one in series with the transmit line. I thought
>>> >> something
>>> >> > > > seemed off as well. I would have expected plenty of gain
>>> especially
>>> >> > with
>>> >> > > > the setting at 999 and no resistor. Although I've disconnected
>>> the
>>> >> > > speaker,
>>> >> > > > I have checked the volume with a lapel/mic and all seems normal.
>>> >> This
>>> >> > > was a
>>> >> > > > working radio and I hadn't detected any problems prior to
>>> setting
>>> >> it up
>>> >> > > as
>>> >> > > > a node radio. I did a resistance check of all of the DB25 pins
>>> to
>>> >> radio
>>> >> > > > solder points. I'm within  a few percent of 4.7Kohms on the RX
>>> and
>>> >> TX
>>> >> > > lines
>>> >> > > > and about 2 ohms on the ground. Since the PTT and COS are
>>> working, I
>>> >> > > didn't
>>> >> > > > measure those. I suppose the tutorial could be wrong and I'm on
>>> the
>>> >> > > ground
>>> >> > > > side of the volume pot but I'd expect no signal at all from
>>> there.
>>> >> > > >
>>> >> > > >
>>> >> > > > Brian / KK6DOQ
>>> >> > > >
>>> >> > > > On Fri, Mar 29, 2019 at 6:14 PM "Doug Crompton via ARM-allstar"
>>> <
>>> >> > > > arm-allstar at hamvoip.org> wrote:
>>> >> > > >
>>> >> > > > > Brian,
>>> >> > > > >
>>> >> > > > >  Since this is a homebrew project please tell me what
>>> resistors
>>> >> you
>>> >> > > have
>>> >> > > > in
>>> >> > > > > the RX path. Generally audio is taken from the high side of
>>> the
>>> >> > volume
>>> >> > > > pot
>>> >> > > > > then fed to pin 21 of the DMK URI. I forget if that is what
>>> you
>>> >> are
>>> >> > > using
>>> >> > > > > for a FOB? The 'B' boost item in simpleusb-tune-menu needs to
>>> be
>>> >> > > enabled.
>>> >> > > > > Something is not right if you need to be at 999 and you are
>>> >> directly
>>> >> > > > > connected from that point in the radio to the FOB. You should
>>> be
>>> >> able
>>> >> > > to
>>> >> > > > > achieve a 5khz level on the item 2 bar graph with a setting of
>>> >> around
>>> >> > > > > 500-700.
>>> >> > > > >
>>> >> > > > >
>>> >> > > > > *73 Doug*
>>> >> > > > >
>>> >> > > > > *WA3DSP*
>>> >> > > > >
>>> >> > > > > *http://www.crompton.com/hamradio <
>>> >> http://www.crompton.com/hamradio
>>> >> > >*
>>> >> > > > >
>>> >> > > > > On Fri, Mar 29, 2019 at 8:56 PM "B Harvey via ARM-allstar" <
>>> >> > > > > arm-allstar at hamvoip.org> wrote:
>>> >> > > > >
>>> >> > > > > > Don,
>>> >> > > > > >
>>> >> > > > > >     I checked the codeplugs for the radios I've been using.
>>> All
>>> >> are
>>> >> > > set
>>> >> > > > > to
>>> >> > > > > > wideband so I don't think I have a problem there. In the
>>> simple
>>> >> USB
>>> >> > > > tune
>>> >> > > > > > menu I checked the levels and with the default settings, for
>>> >> RX, I
>>> >> > > was
>>> >> > > > > > barely moving the "VU" meter. Even when I increased the
>>> setting
>>> >> to
>>> >> > > > 999, I
>>> >> > > > > > didn't get much more that 1/3 of the way to the 3khz mark.
>>> >> However,
>>> >> > > > after
>>> >> > > > > > raising it to 999, I could get proper decodes of all of the
>>> >> numeric
>>> >> > > > > digits
>>> >> > > > > > in the CLI menu. My next step was to remove the 4.7Kohm
>>> >> resistor in
>>> >> > > the
>>> >> > > > > RX
>>> >> > > > > > line as shown in the UV 82 node radio tutorial on Hamvoip.
>>> That
>>> >> > > seemed
>>> >> > > > to
>>> >> > > > > > make no difference at all. Even though I get proper decodes
>>> in
>>> >> CLI,
>>> >> > > > they
>>> >> > > > > > still don't resolve to working commands over the Allstar
>>> >> network.
>>> >> > Any
>>> >> > > > > other
>>> >> > > > > > suggestions? As I mentioned earlier, pre-emphasis and
>>> >> de-emphasis
>>> >> > are
>>> >> > > > > > currently disabled.
>>> >> > > > > >
>>> >> > > > > > Brian / KK6DOQ
>>> >> > > > > >
>>> >> > > > > > On Fri, Mar 29, 2019 at 1:18 PM "Don Backstrom - AA7AU via
>>> >> > > > ARM-allstar" <
>>> >> > > > > > arm-allstar at hamvoip.org> wrote:
>>> >> > > > > >
>>> >> > > > > > > On Fri 29-Mar-19 11:37, "B Harvey via ARM-allstar" wrote:
>>> >> > > > > > > > I can't test actual
>>> >> > > > > > > > levels or wide / narrow mode so I'll have to wait until
>>> I
>>> >> get
>>> >> > > home
>>> >> > > > to
>>> >> > > > > > try
>>> >> > > > > > > > those out.
>>> >> > > > > > >
>>> >> > > > > > >         From our tech write-up: "If you are having issues
>>> ...
>>> >> and
>>> >> > > are
>>> >> > > > > > > experiencing audio levels or DTMF decoding/encoding
>>> >> difficulties,
>>> >> > > > use a
>>> >> > > > > > > service monitor to check to see if the module is actually
>>> >> > programed
>>> >> > > > to
>>> >> > > > > > > Wideband mode"
>>> >> > > > > > >
>>> >> > > > > > > > Another thing that occurred to me is that perhaps I'm
>>> too
>>> >> close
>>> >> > > > > > > > to the node when I'm transmitting from my HT and I may
>>> have
>>> >> > some
>>> >> > > > > > de-sense
>>> >> > > > > > > > thing going on.
>>> >> > > > > > >
>>> >> > > > > > >         That obviously can also give you issues. Also
>>> remember
>>> >> > > *low*
>>> >> > > > > > power.
>>> >> > > > > > >
>>> >> > > > > > >         Doug and David are the experts here, especially
>>> on all
>>> >> > the
>>> >> > > > > other
>>> >> > > > > > > settings. I'm just an interested HamVoip user chiming in
>>> on
>>> >> DTMF,
>>> >> > > as
>>> >> > > > we
>>> >> > > > > > > did battle with those issues for quite some time before
>>> >> > discovering
>>> >> > > > the
>>> >> > > > > > > 818 probs and others like issues.
>>> >> > > > > > >
>>> >> > > > > > >         One other note on DTMF: on many HTs when you PTT
>>> and
>>> >> then
>>> >> > > key
>>> >> > > > > > your
>>> >> > > > > > > DTMF
>>> >> > > > > > > code in you get output from your HT speaker - which *can*
>>> >> lead to
>>> >> > > > real
>>> >> > > > > > > feedback probs as your mike is open and listening during
>>> PTT.
>>> >> > Find
>>> >> > > > the
>>> >> > > > > > > setting and disable tone output from DTMF entry. Also,
>>> watch
>>> >> your
>>> >> > > > > > > background noise/conversation/etc at anytime you are
>>> using PTT
>>> >> > even
>>> >> > > > if
>>> >> > > > > > > just to key in DTMF - you're OTA!
>>> >> > > > > > >
>>> >> > > > > > >         Good luck,
>>> >> > > > > > >
>>> >> > > > > > >         - Don - AA7AU
>>> >> > > > > > > _______________________________________________
>>> >> > > > > > >
>>> >> > > > > > > ARM-allstar mailing list
>>> >> > > > > > > ARM-allstar at hamvoip.org
>>> >> > > > > > >
>>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>> >> > > > > > >
>>> >> > > > > > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>> >> > > > > > >
>>> >> > > > > > _______________________________________________
>>> >> > > > > >
>>> >> > > > > > ARM-allstar mailing list
>>> >> > > > > > ARM-allstar at hamvoip.org
>>> >> > > > > >
>>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>> >> > > > > >
>>> >> > > > > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>> >> > > > > >
>>> >> > > > > _______________________________________________
>>> >> > > > >
>>> >> > > > > ARM-allstar mailing list
>>> >> > > > > ARM-allstar at hamvoip.org
>>> >> > > > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>> >> > > > >
>>> >> > > > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>> >> > > > >
>>> >> > > > _______________________________________________
>>> >> > > >
>>> >> > > > ARM-allstar mailing list
>>> >> > > > ARM-allstar at hamvoip.org
>>> >> > > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>> >> > > >
>>> >> > > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>> >> > > >
>>> >> > > _______________________________________________
>>> >> > >
>>> >> > > ARM-allstar mailing list
>>> >> > > ARM-allstar at hamvoip.org
>>> >> > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>> >> > >
>>> >> > > Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>> >> > >
>>> >> > _______________________________________________
>>> >> >
>>> >> > ARM-allstar mailing list
>>> >> > ARM-allstar at hamvoip.org
>>> >> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>> >> >
>>> >> > Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>> >> >
>>> >> _______________________________________________
>>> >>
>>> >> ARM-allstar mailing list
>>> >> ARM-allstar at hamvoip.org
>>> >> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>> >>
>>> >> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>> >>
>>> >
>>> _______________________________________________
>>>
>>> ARM-allstar mailing list
>>> ARM-allstar at hamvoip.org
>>> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
>>>
>>> Visit the BBB and RPi2/3 web page - http://hamvoip.org
>>>
>>