[arm-allstar] wireline tone control of repeater

Wed Jan 29 10:10:15 EST 2020

Chris,

Take a look at this post. It has examples of using COP 48:

http://lists.hamvoip.org/pipermail/arm-allstar/2019-September/013160.html

73, David KB4FXC

On Wed, 29 Jan 2020, c b wrote:

> Thanks for replying, the tone  PTT is not necessary, as that can be done
> with hardware e&m stile.
> 
> i will look at the COP 48 thank you
> 
> Chris
> 
> On Wed, Jan 29, 2020 at 5:27 AM David McGough <kb4fxc at inttek.net> wrote:
> 
> >
> > Chris,
> >
> > HamVoIP/AllStar can generate arbitrary tones, for example using the COP 48
> > command. Does your systems need function tones every time PTT is asserted?
> > If not, I think COP 48 tone generation would work. If you do need function
> > tones with every key-up, a AllStar macro -might- work?
> >
> > Generating a continuous guard tone will be a problem, I think, with the
> > current software....I'll think about that some more.  Do you need the
> > guard tone to remain present during transmissions?
> >
> >
> > 73, David KB4FXC
> >
> >
> >
> >
> > On Tue, 28 Jan 2020, "c b via ARM-allstar" wrote:
> >
> > > Brian
> > >
> > > you exactly nailed it, the ptt is not much of a concern as it can be done
> > > e&m style but the ability to change channels would be great.
> > >
> > > i was hoping someone already thought of this.
> > >
> > > thank you for your time
> > >
> > > On Tue, Jan 28, 2020 at 4:19 PM "Brian Swann via ARM-allstar" <
> > > arm-allstar at hamvoip.org> wrote:
> > >
> > > > Doug,
> > > >
> > > > The way I read his request, he's looking for Tone Remote Control (TRC)
> > > > which is an older analog standard for commercial radios. Typically a
> > normal
> > > > channel 1 keyup is 120ms of "High Level Guard Tone", which is 2175hz,
> > > > immediately followed by 40ms of the F1 "Function Tone" which is 1950hz.
> > > > Then the voice is gated through, and a continuous "Low Level Guard
> > Tone" at
> > > > a level of -30db (compared to full voice modulation) is sent along
> > with the
> > > > voice. The LLGT keeps the transmitter keyed. The transmitter drops out
> > when
> > > > the LLGT disappears.
> > > >
> > > > By using different function tones, you can change channels, or
> > transmit PL
> > > > stripped, or do other functions. Most base stations were fairly simple
> > and
> > > > didn't implement too many different functions.
> > > >
> > > > I don't think this is implemented in Hamvoip, although it might be. I
> > don't
> > > > think it would be very difficult to add in. The advantage would be
> > that a
> > > > lot of commercial surplus base stations speak this "language" by
> > default.
> > > >
> > > > More info in the Wikipedia article
> > > > https://en.wikipedia.org/wiki/Tone_remote
> > > >
> > > > Tone remotes send commands to a base station using *function tones*, a
> > > > series of two tones in sequence. The first tone is 2,175 Hz and is
> > 100-300
> > > > milliseconds in length.[6]
> > > > <https://en.wikipedia.org/wiki/Tone_remote#cite_note-6> The most
> > common
> > > > second tone is 1,950 Hz. The most commonly used tone sequence in tone
> > > > remote controls is the channel 1 transmit command. The default for this
> > > > command consists of a high-level 2,175 Hz followed by a lower-level
> > > > 1,950 Hz. A continuous, low-level 2,175 Hz tone follows. Voice is
> > > > multiplexed over the tone. So long as the 2,175 Hz tone is present, the
> > > > transmitter remains on. An audio notch filter
> > > > <https://en.wikipedia.org/wiki/Notch_filter> removes the 2,175 Hz
> > > > low-level
> > > > tone from the actual transmit audio. General Electric Mobile Radio
> > called
> > > > the high-level tone, '"Secur-it tone", and called the low-level tone
> > "hold
> > > > tone." In the industry, the low-level continuous tone is often called,
> > > > *low-level
> > > > guard tone*. The low-level tone is present at the same time as
> > transmitted
> > > > voice.
> > > >
> > > > Brian
> > > > n1bs
> > > >
> > > > On Tue, Jan 28, 2020 at 5:53 PM "Doug Crompton via ARM-allstar" <
> > > > arm-allstar at hamvoip.org> wrote:
> > > >
> > > > > Chris,
> > > > >
> > > > >  I am not completely clear on what you want to do but the answer is
> > yes
> > > > you
> > > > > can control a capable rig either through hardware or CAT control to
> > > > change
> > > > > frequency and other things using DTMF. See the howto on this at the
> > > > > hamvoip.org web page which explains how to use GPIO bits to control
> > BCD
> > > > > channel changes on capable radios. Hamvoip also has hamlib installed
> > and
> > > > > using rigctl commands you can control many radios. It is up to the
> > user
> > > > to
> > > > > implement this. Do  rigclt -l    at the Linux prompt to see all the
> > > > > currently controllable rigs.
> > > > >
> > > > >
> > > > > *73 Doug*
> > > > >
> > > > > *WA3DSP*
> > > > >
> > > > > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio
> > >*
> > > > >
> > > > > On Tue, Jan 28, 2020 at 11:09 AM "c b via ARM-allstar" <
> > > > > arm-allstar at hamvoip.org> wrote:
> > > > >
> > > > > > does allaratlink support tone control of a station?
> > > > > >
> > > > > > for instance using 2175 (switching to low level)  to PTT and using
> > > > > > different tones to change channel?
> > > > > >
> > > > > > or at least the ability to send the correct tone to change
> > channels via
> > > > > > sending DTMF to the to allstar and then allstar sending the tome
> > out
> > > > the
> > > > > > URI to the station?
> > > > > >
> > > > > > the application would be a continuous duty remoter using a mastr
> > iii
> > > > and
> > > > > > making it multi channel by sending the correct tone to switch
> > channels.
> > > > > >
> > > > > > thanks
> > > > > >
> > > > > > Chris
> > > > > > _______________________________________________
> > > > > >
> > > > > > ARM-allstar mailing list
> > > > > > ARM-allstar at hamvoip.org
> > > > > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> > > > > >
> > > > > > Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
> > > > > >
> > > > > _______________________________________________
> > > > >
> > > > > ARM-allstar mailing list
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> > > > >
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> > > > >
> > > > _______________________________________________
> > > >
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> > > >
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> > > >
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> > >
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> > > ARM-allstar at hamvoip.org
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> > >
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> > >
> >
> >
> 