[App_rpt-users] Remote Control of PL Decode Frequency in USBRadio

Tue Mar 12 11:25:24 UTC 2019

Thank you for your reply.

The problem I am having is that the TS-2000 station radio does not have PL decode available on the accessory output. Accordingly, it can not be readily used as a repeater control station. It is great as an HF remote station. I am trying to come up with a way to use the DSP feature of the USBRadio module to accomplish selectable PL decode.

As far as I can tell, there are three solutions:

1: Use SimpleUSB and do a hardware hack on the TS-2000 to bring out PL decode to the accessory connector. But then how do I make SimpleUSB ignore the CTCSS input line on the URIx as needed?

2: Use USBRadio (instead of SimpleUSB) to perform the decode using its DSP. This is the least intrusive, but this is the question: is there a way to disable or change the frequency of the DSP PL tone frequency on the fly???

3: Use Hamlib (which I am using to control the radio anyway) and poll for valid PL decode. Use this to put the Allstar system into receive (instead of the CTCSS line on the URIx). This sounds like the best way to me, but I am not sure how to tell Asterisk to go into receive.

So the question can be distilled thusly:

How can I push a command from the shell into Asterisk to emulate what the URIx does when it receives a valid PL decode???

Thanks again for any replies.

John

On Mon, Mar 11, 2019 at 08:00, <app_rpt-users-request at lists.allstarlink.org> wrote:

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> Today's Topics:
>
> 1. Re: GE Mastr III and DMK USB-URI (Bret Taylor)
> 2. Remote Control of PL Decode Frequency in USBRadio (John)
> 3. Re: Remote Control of PL Decode Frequency in USBRadio (ARS W5OMR)
> 4. Re: GE Mastr III and DMK USB-URI (C B)
> 5. Re: GE Mastr III and DMK USB-URI (C B)
> 6. Re: GE Mastr III and DMK USB-URI (Marshall Oldham)
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 10 Mar 2019 05:52:41 -0700
> From: Bret Taylor <bmtaylor at osd.wednet.edu>
> To: Users of Asterisk app_rpt <app_rpt-users at lists.allstarlink.org>
> Subject: Re: [App_rpt-users] GE Mastr III and DMK USB-URI
> Message-ID:
> <CAFjtgVSvCRVeXRSwMruXPK1ZtbfHMNeuavDiRCvoe49=85vsPw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Wow.
>
> Jon, thank you for the information. I will keep you all posted, and will
> post a working config for future reference (if I get it working). Pin 21 on
> the DMK USB-URI is listed as MIC_IN_AC (AC Coupled). The Mastr III operates
> on DC power, so I can only assume the signal from P5-10 on the Mastr III
> (Receiver Volume/Squelch High (raw discriminator audio, NOT de-emphasized)
> would be a DC signal? Will the AC coupling be an issue?
>
> Thank you for all the help. It is greatly appreciated.
>
> --Bret Taylor
> Olympia School District
>
> On Sat, Mar 9, 2019 at 5:32 PM REDBUTTON_CTRL <jrorke at cogeco.ca> wrote:
>
>> Bret, one thing to know about the URI is that the COR input line (pin 8)
>> requires a signal transition to pull to ground. This is different that a
>> signal that sources voltage and goes low. the URI has internal pullup
>> resistors so it doesn't look for voltage change.
>>
>> So what this means is if the CAS/COR out line on the Master III does not
>> pull to ground when it goes low, the URI will not see a signal change. The
>> URI has a dc blocking diode on its input. So it needs to see a signal that
>> either goes low when the receiver is active or when it is inactive.
>>
>> If the Master III CAS/COR is active hi then I suggest you connect the
>> CAS/COR through a 47K resistor then to the base of an NPN transistor. Then
>> connect the collector to pin 8 on the URI and connect the emitter to
>> gorund. This will invert the CAS/COR signal and give an open collector that
>> goes to ground on receiver activity.
>>
>> Then in the Allstar node set the CORFROM=usbinvert.
>>
>> This means the URI will be looking for a signal to ground pin 8. then
>> audio will be sent through the system.
>>
>> Hope this helps.
>>
>> Regards,
>>
>> Jon VA3RQ
>>
>> On 3/9/2019 8:26 AM, Bret Taylor wrote:
>>
>> "What channel driver are you running? This will determine what sort of
>> audio
>> you need from the system and where squelch is performed."
>>
>> I'm using a Bridgecom MV-i1 to drive the URI -
>> https://www.bridgecomsystems.com/collections/tl-net/products/mv-1
>>
>> I don't know exactly what is under the hood. Their "OS" is called TL-Net.
>> But under that is Raspbian. I have a network of TRBO repeaters that the
>> MV-i1 taps into through IP Site Connect.
>>
>> I'm trying to bridge the TRBO repeaters to this Mastr III base station.
>> I've already created a cable using the info from
>> http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html
>>
>> I created a bridge group in TL-Net to bridge the analog interface to IPSC
>> masters. I can PTT on a DMR programmed to the correct Call Group, and hear
>> it on a Analog radio tuned to the Mastr III frequency. But I can not hear
>> the Analog radios return, it doesn't seem to trigger the URI.
>>
>> If I use pin 8 on the URI (active low) and connect it to P5-17, or P5-20
>> (COR & CTCSS both Active High) on the Mastr III backplane, the URI goes
>> into a broadcast storm. Using any of the optional pins for COR (2 & 3 both
>> listed as active high) nothing happens. I suspect since these are GPIO, the
>> configuration (for the URI?) is incorrect.
>>
>> I know the URI works, as I was able to use it to drive an XPR5550e
>> programmed to the analog frequency of the Mastr III. It's just not the best
>> situation to run it like that. You clearly hear dispatch, but since I'm not
>> tapped onto the return path of the antenna connected to the Mastr III, the
>> mobiles response clarity is dependent on the proximity to the antenna of
>> the XPR5550e.
>>
>> "Double check your programing too, as the Mastr III IO is based on
>> programing.
>> You'll need to ensure you have your de-empahsis and pre-emphasis setup
>> properly too."
>>
>> I do not have the Mastr III programming software (and can't seem to find
>> it anywhere). Another user in this list says he has it, but it searching
>> for it. So, I have no idea how it's programmed. It's possible the backplane
>> connecters for audio out are disabled?
>>
>> Thanks for your help.
>>
>> --Bret Taylor
>> Olympia School District
>>
>>
>> On Fri, Mar 8, 2019 at 7:49 PM Bryan Fields <Bryan at bryanfields.net> wrote:
>>
>>> On 3/8/19 6:21 PM, Bret Taylor wrote:
>>> > Has anyone successfully interfaced the DMK USB-URI to a GE Mastr III
>>> > repeater/base station?
>>>
>>> I think a few have, I've not personally done this.
>>>
>>> > I've got transmit working correctly, but can seem to get the received
>>> audio
>>> > back into the device correctly.
>>>
>>> What channel driver are you running? This will determine what sort of
>>> audio
>>> you need from the system and where squelch is performed.
>>>
>>> There is some info on this page and I suspect it will be trivial to use
>>> this
>>> to build a cable to interface to the Mastr III.
>>> http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html
>>>
>>> Double check your programing too, as the Mastr III IO is based on
>>> programing.
>>> You'll need to ensure you have your de-empahsis and pre-emphasis setup
>>> properly too.
>>>
>>> If you get a working config, please consider adding it to the wiki or
>>> posting
>>> here.
>>>
>>> https://wiki.allstarlink.org/wiki/Radio_Connections
>>>
>>> 73's
>>> --
>>> Bryan Fields
>>>
>>> 727-409-1194 - Voice
>>> http://bryanfields.net
>>> _______________________________________________
>>> App_rpt-users mailing list
>>> App_rpt-users at lists.allstarlink.org
>>> http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users
>>>
>>> To unsubscribe from this list please visit
>>> http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users and
>>> scroll down to the bottom of the page. Enter your email address and press
>>> the "Unsubscribe or edit options button"
>>> You do not need a password to unsubscribe, you can do it via email
>>> confirmation. If you have trouble unsubscribing, please send a message to
>>> the list detailing the problem.
>>>
>>
>>
>> _______________________________________________
>> App_rpt-users mailing listApp_rpt-users at lists.allstarlink.orghttp://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users
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> ------------------------------
>
> Message: 2
> Date: Sun, 10 Mar 2019 12:57:54 +0000
> From: John <john.chartkoff at protonmail.com>
> To: "app_rpt-users at lists.allstarlink.org"
> <app_rpt-users at lists.allstarlink.org>
> Subject: [App_rpt-users] Remote Control of PL Decode Frequency in
> USBRadio
> Message-ID:
> <PX3icoZqQjoDsjCpm2NIop3Q846sTU0Q902jS1RX9E-h3q6VWAk7JZ1agn4Yh-hTXuRBsMuMOvWewX_laygQFhHOpAF2QeqbrUPi5out_LY=@protonmail.com>
>
> Content-Type: text/plain; charset="utf-8"
>
> Hello to the group,
>
> I am trying to find a way to remotely control PL decode in a Kenwood TS-2000 configured as a remote base.
>
> The problem is that the ACCESSORY 2 connector on the TS-2000 does not expose PL decode - just COR. and the COR goes active any time there is a carrier, even if CTCSS decode is enabled. All the CTCSS feature does is mute the speaker. It has no effect on the COR line.
>
> So I thought I could use the usbradio module to accomplish this, but it only makes sense if I can remotely change the PL decode frequency, and disable it. That way it could be used as a frequency agile repeater control station as well as an HF station.
>
> I was thinking I could modify the usbradio configuration file text and restart asterisk, but that does not seem very elegant.
>
> I have written a Java class that runs on the Hamvoip RPi box, and it works very well as an interface between DTMF from the extensions module and Hamlib's rigctl on the Bash shell. (I can't get rigctld to work, but that is a different issue I will ask for assistance on once I have this working.)
>
> I just need to figure out a clean way to change PL decode frequencies in usbradio - basically from the command line.
>
> Thanks in advance for your assistance.
>
> John R. Chartkoff, N1CTF
> Columbus, Ohio
> Cell: 850-902-1147
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> ------------------------------
>
> Message: 3
> Date: Sun, 10 Mar 2019 08:38:54 -0500
> From: ARS W5OMR <ars.w5omr at gmail.com>
> To: Users of Asterisk app_rpt <app_rpt-users at lists.allstarlink.org>
> Subject: Re: [App_rpt-users] Remote Control of PL Decode Frequency in
> USBRadio
> Message-ID:
> <CAOhDOk3Ew-J34a6VFEqSPKHVQaXhUsj8=PK1_cFZfWbs7EvPEg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> So... let me take a stab at this...
>
> You want to use a TS-2000 as a remote base.
> You want to be able to change the PL tone on the 2k, from the command line
> on the Allstar device.
> What frequency are you coming in on, and what band do you want to control
> the PL on?
>
> I think what you're going to have to do, is enter all the frequencies you
> wish to access that require tones into memory on the TS-2000 and then just
> access the memory channel number.
>
> Good luck & 73
>
> On Sun, Mar 10, 2019 at 7:58 AM John <john.chartkoff at protonmail.com> wrote:
>
>> Hello to the group,
>>
>> I am trying to find a way to remotely control PL decode in a Kenwood
>> TS-2000 configured as a remote base.
>>
>> The problem is that the ACCESSORY 2 connector on the TS-2000 does not
>> expose PL decode - just COR. and the COR goes active any time there is a
>> carrier, even if CTCSS decode is enabled. All the CTCSS feature does is
>> mute the speaker. It has no effect on the COR line.
>>
>> So I thought I could use the usbradio module to accomplish this, but it
>> only makes sense if I can remotely change the PL decode frequency, and
>> disable it. That way it could be used as a frequency agile repeater control
>> station as well as an HF station.
>>
>> I was thinking I could modify the usbradio configuration file text and
>> restart asterisk, but that does not seem very elegant.
>>
>> I have written a Java class that runs on the Hamvoip RPi box, and it works
>> very well as an interface between DTMF from the extensions module and
>> Hamlib's rigctl on the Bash shell. (I can't get rigctld to work, but that
>> is a different issue I will ask for assistance on once I have this working.)
>>
>> I just need to figure out a clean way to change PL decode frequencies in
>> usbradio - basically from the command line.
>>
>> Thanks in advance for your assistance.
>>
>> *John R. Chartkoff, N1CTF*
>> *Columbus, Ohio*
>> *Cell: 850-902-1147*
>>
>>
>> _______________________________________________
>> App_rpt-users mailing list
>> App_rpt-users at lists.allstarlink.org
>> http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users
>>
>> To unsubscribe from this list please visit
>> http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users and
>> scroll down to the bottom of the page. Enter your email address and press
>> the "Unsubscribe or edit options button"
>> You do not need a password to unsubscribe, you can do it via email
>> confirmation. If you have trouble unsubscribing, please send a message to
>> the list detailing the problem.
>>
>
> --
> Operating your AM rig without a scope is like driving our car at night
> without headlights. (~K4KYV)
>
> 73 = Best Regards,
> -Geoff/W5OMR
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> ------------------------------
>
> Message: 4
> Date: Sun, 10 Mar 2019 14:44:55 +0000 (UTC)
> From: C B <harvard5362 at yahoo.com>
> To: Users of Asterisk app_rpt <app_rpt-users at lists.allstarlink.org>
> Subject: Re: [App_rpt-users] GE Mastr III and DMK USB-URI
> Message-ID: <883173762.2160287.1552229095166 at mail.yahoo.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi
> Mastr III can be interfaced to the URI by simply using P5 pin 20 (RUS) for both Carrier and Pl detect to pin 8 of the URI
> this has been working as intended for many years.
> Chris
>
> From: REDBUTTON_CTRL <jrorke at cogeco.ca>
> To: app_rpt-users at lists.allstarlink.org
> Sent: Saturday, March 9, 2019 5:32 PM
> Subject: Re: [App_rpt-users] GE Mastr III and DMK USB-URI
>
> Bret, one thing to know about the URI is that the COR input line (pin 8) requires a signal transition to pull to ground. This is different that a signal that sources voltage and goes low. the URI has internal pullup resistors so it doesn't look for voltage change.
>
> So what this means is if the CAS/COR out line on the Master III does not pull to ground when it goes low, the URI will not see a signal change. The URI has a dc blocking diode on its input. So it needs to see a signal that either goes low when the receiver is active or when it is inactive.
>
> If the Master III CAS/COR is active hi then I suggest you connect the CAS/COR through a 47K resistor then to the base of an NPN transistor. Then connect the collector to pin 8 on the URI and connect the emitter to gorund. This will invert the CAS/COR signal and give an open collector that goes to ground on receiver activity.
>
> Then in the Allstar node set the CORFROM=usbinvert.
>
> This means the URI will be looking for a signal to ground pin 8. then audio will be sent through the system.
>
> Hope this helps.
>
> Regards,
>
> Jon VA3RQ
>
> On 3/9/2019 8:26 AM, Bret Taylor wrote:
> "What channel driver are you running?? This will determine what sort of audio
> you need from the system and where squelch is performed."
> I'm using a Bridgecom MV-i1 to drive the URI -?https://www.bridgecomsystems.com/collections/tl-net/products/mv-1
> I don't know exactly what is under the hood. Their "OS" is called TL-Net. But under that is Raspbian. I have a network of TRBO repeaters that the MV-i1 taps into through IP Site Connect.
> I'm trying to bridge the TRBO repeaters to this Mastr III base station. I've already created a cable using the info from?http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html
> I created a bridge group in TL-Net to bridge the analog interface to IPSC masters. I can PTT on a DMR programmed to the correct Call Group, and hear it on a Analog radio tuned to the Mastr III frequency.??But I can not hear the Analog radios return, it doesn't seem to trigger the URI.
>
> If I use pin 8 on the URI (active low) and connect it to P5-17, or P5-20 (COR & CTCSS both Active High) on the Mastr III backplane, the URI goes into a broadcast storm. Using any of the optional pins for COR (2 & 3 both listed as active high) nothing happens. I suspect since these are GPIO, the configuration (for the URI?) is incorrect.?
> I know the URI works, as I was able to use it to drive an XPR5550e programmed to the analog frequency of the Mastr III. It's just not the best situation to run it like that. You clearly hear dispatch, but since I'm not tapped onto the return path of the antenna connected to the Mastr III, the mobiles response clarity is dependent on the proximity to the antenna of the XPR5550e.
> "Double check your programing too, as the Mastr III IO is based on programing. ?You'll need to ensure you have your de-empahsis and pre-emphasis setup
> properly too."
> I do not have the Mastr III programming software (and can't seem to find it anywhere). Another user in this list says he has it, but it searching for it. So, I have no idea how it's programmed. It's possible the backplane connecters for audio out are disabled??
> Thanks for your help.? ? --Bret Taylor Olympia School District
>
> On Fri, Mar 8, 2019 at 7:49 PM Bryan Fields <Bryan at bryanfields.net> wrote:
>
> On 3/8/19 6:21 PM, Bret Taylor wrote:
>> Has anyone successfully interfaced the DMK USB-URI to a GE Mastr III
>> repeater/base station?
>
> I think a few have, I've not personally done this.
>
>> I've got transmit working correctly, but can seem to get the received audio
>> back into the device correctly.
>
> What channel driver are you running?? This will determine what sort of audio
> you need from the system and where squelch is performed.
>
> There is some info on this page and I suspect it will be trivial to use this
> to build a cable to interface to the Mastr III.
> http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html
>
> Double check your programing too, as the Mastr III IO is based on programing.
> ?You'll need to ensure you have your de-empahsis and pre-emphasis setup
> properly too.
>
> If you get a working config, please consider adding it to the wiki or posting
> here.
>
> https://wiki.allstarlink.org/wiki/Radio_Connections
>
> 73's
> --
> Bryan Fields
>
> 727-409-1194 - Voice
> http://bryanfields.net
> _______________________________________________
> App_rpt-users mailing list
> App_rpt-users at lists.allstarlink.org
> http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users
>
> To unsubscribe from this list please visit http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"
> You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> _______________________________________________
> App_rpt-users mailing list
> App_rpt-users at lists.allstarlink.org
> http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users
>
> To unsubscribe from this list please visit http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"
> You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
>
> _______________________________________________
> App_rpt-users mailing list
> App_rpt-users at lists.allstarlink.org
> http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users
>
> To unsubscribe from this list please visit http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"
> You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem.
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> ------------------------------
>
> Message: 5
> Date: Sun, 10 Mar 2019 14:48:24 +0000 (UTC)
> From: C B <harvard5362 at yahoo.com>
> To: Users of Asterisk app_rpt <app_rpt-users at lists.allstarlink.org>
> Subject: Re: [App_rpt-users] GE Mastr III and DMK USB-URI
> Message-ID: <954458750.2164231.1552229304345 at mail.yahoo.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hi
> Is you want de-emphasized audio use pins? 3&4 of TB101, this is a transformer coupled balanced output.
>
> From: Bret Taylor <bmtaylor at osd.wednet.edu>
> To: Users of Asterisk app_rpt <app_rpt-users at lists.allstarlink.org>
> Sent: Sunday, March 10, 2019 5:53 AM
> Subject: Re: [App_rpt-users] GE Mastr III and DMK USB-URI
>
> Wow.
> Jon, thank you for the information. I will keep you all posted, and will post a working config for future reference (if I get it working). Pin 21 on the DMK USB-URI is listed as MIC_IN_AC (AC Coupled). The Mastr III operates on DC power, so I can only assume the signal from P5-10 on the Mastr III (Receiver Volume/Squelch High (raw discriminator audio, NOT de-emphasized) would be a DC signal? Will the AC coupling be an issue?
> Thank you for all the help. It is?greatly appreciated.
> --Bret TaylorOlympia School District
>
> On Sat, Mar 9, 2019 at 5:32 PM REDBUTTON_CTRL <jrorke at cogeco.ca> wrote:
>
> Bret, one thing to know about the URI is that the COR input line (pin 8) requires a signal transition to pull to ground. This is different that a signal that sources voltage and goes low. the URI has internal pullup resistors so it doesn't look for voltage change.
>
> So what this means is if the CAS/COR out line on the Master III does not pull to ground when it goes low, the URI will not see a signal change. The URI has a dc blocking diode on its input. So it needs to see a signal that either goes low when the receiver is active or when it is inactive.
>
> If the Master III CAS/COR is active hi then I suggest you connect the CAS/COR through a 47K resistor then to the base of an NPN transistor. Then connect the collector to pin 8 on the URI and connect the emitter to gorund. This will invert the CAS/COR signal and give an open collector that goes to ground on receiver activity.
>
> Then in the Allstar node set the CORFROM=usbinvert.
>
> This means the URI will be looking for a signal to ground pin 8. then audio will be sent through the system.
>
> Hope this helps.
>
> Regards,
>
> Jon VA3RQ
>
> On 3/9/2019 8:26 AM, Bret Taylor wrote:
> "What channel driver are you running?? This will determine what sort of audio
> you need from the system and where squelch is performed."
> I'm using a Bridgecom MV-i1 to drive the URI -?https://www.bridgecomsystems.com/collections/tl-net/products/mv-1
> I don't know exactly what is under the hood. Their "OS" is called TL-Net. But under that is Raspbian. I have a network of TRBO repeaters that the MV-i1 taps into through IP Site Connect.
> I'm trying to bridge the TRBO repeaters to this Mastr III base station. I've already created a cable using the info from?http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html
> I created a bridge group in TL-Net to bridge the analog interface to IPSC masters. I can PTT on a DMR programmed to the correct Call Group, and hear it on a Analog radio tuned to the Mastr III frequency.??But I can not hear the Analog radios return, it doesn't seem to trigger the URI.
>
> If I use pin 8 on the URI (active low) and connect it to P5-17, or P5-20 (COR & CTCSS both Active High) on the Mastr III backplane, the URI goes into a broadcast storm. Using any of the optional pins for COR (2 & 3 both listed as active high) nothing happens. I suspect since these are GPIO, the configuration (for the URI?) is incorrect.?
> I know the URI works, as I was able to use it to drive an XPR5550e programmed to the analog frequency of the Mastr III. It's just not the best situation to run it like that. You clearly hear dispatch, but since I'm not tapped onto the return path of the antenna connected to the Mastr III, the mobiles response clarity is dependent on the proximity to the antenna of the XPR5550e.
> "Double check your programing too, as the Mastr III IO is based on programing. ?You'll need to ensure you have your de-empahsis and pre-emphasis setup
> properly too."
> I do not have the Mastr III programming software (and can't seem to find it anywhere). Another user in this list says he has it, but it searching for it. So, I have no idea how it's programmed. It's possible the backplane connecters for audio out are disabled??
> Thanks for your help.? ? --Bret Taylor Olympia School District
>
> On Fri, Mar 8, 2019 at 7:49 PM Bryan Fields <Bryan at bryanfields.net> wrote:
>
> On 3/8/19 6:21 PM, Bret Taylor wrote:
>> Has anyone successfully interfaced the DMK USB-URI to a GE Mastr III
>> repeater/base station?
>
> I think a few have, I've not personally done this.
>
>> I've got transmit working correctly, but can seem to get the received audio
>> back into the device correctly.
>
> What channel driver are you running?? This will determine what sort of audio
> you need from the system and where squelch is performed.
>
> There is some info on this page and I suspect it will be trivial to use this
> to build a cable to interface to the Mastr III.
> http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html
>
> Double check your programing too, as the Mastr III IO is based on programing.
> ?You'll need to ensure you have your de-empahsis and pre-emphasis setup
> properly too.
>
> If you get a working config, please consider adding it to the wiki or posting
> here.
>
> https://wiki.allstarlink.org/wiki/Radio_Connections
>
> 73's
> --
> Bryan Fields
>
> 727-409-1194 - Voice
> http://bryanfields.net
> _______________________________________________
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> ------------------------------
>
> Message: 6
> Date: Sun, 10 Mar 2019 22:54:02 -0700
> From: "Marshall Oldham" <ke6pcv at cal-net.org>
> To: "'Users of Asterisk app_rpt'"
> <app_rpt-users at lists.allstarlink.org>
> Subject: Re: [App_rpt-users] GE Mastr III and DMK USB-URI
> Message-ID: <014401d4d7ce$d4bf2b00$7e3d8100$@org>
> Content-Type: text/plain; charset="us-ascii"
>
> FYI,
>
> He is not using app_rpt software with the URI, he is using the Bridgecom MV-iL hardware with a
> URI to interface to his GE Mastr III
>
> So he can not set CORFROM=uisbinvert in software config.
>
> 73
>
> Marshall
>
> From: App_rpt-users [mailto:app_rpt-users-bounces at lists.allstarlink.org] On Behalf Of
> REDBUTTON_CTRL
> Sent: Saturday, March 09, 2019 5:24 PM
> To: app_rpt-users at lists.allstarlink.org
> Subject: Re: [App_rpt-users] GE Mastr III and DMK USB-URI
>
> Bret, one thing to know about the URI is that the COR input line (pin 8) requires a signal
> transition to pull to ground. This is different that a signal that sources voltage and goes
> low. the URI has internal pullup resistors so it doesn't look for voltage change.
>
> So what this means is if the CAS/COR out line on the Master III does not pull to ground when it
> goes low, the URI will not see a signal change. The URI has a dc blocking diode on its input.
> So it needs to see a signal that either goes low when the receiver is active or when it is
> inactive.
>
> If the Master III CAS/COR is active hi then I suggest you connect the CAS/COR through a 47K
> resistor then to the base of an NPN transistor. Then connect the collector to pin 8 on the URI
> and connect the emitter to gorund. This will invert the CAS/COR signal and give an open
> collector that goes to ground on receiver activity.
>
> Then in the Allstar node set the CORFROM=usbinvert.
>
> This means the URI will be looking for a signal to ground pin 8. then audio will be sent
> through the system.
>
> Hope this helps.
>
> Regards,
>
> Jon VA3RQ
>
> On 3/9/2019 8:26 AM, Bret Taylor wrote:
>
> "What channel driver are you running? This will determine what sort of audio
> you need from the system and where squelch is performed."
>
> I'm using a Bridgecom MV-i1 to drive the URI -
> https://www.bridgecomsystems.com/collections/tl-net/products/mv-1
>
> I don't know exactly what is under the hood. Their "OS" is called TL-Net. But under that is
> Raspbian. I have a network of TRBO repeaters that the MV-i1 taps into through IP Site Connect.
>
> I'm trying to bridge the TRBO repeaters to this Mastr III base station. I've already created a
> cable using the info from http://www.repeater-builder.com/ge/mastr3/m3-ctrl/m3-ctrl.html
>
> I created a bridge group in TL-Net to bridge the analog interface to IPSC masters. I can PTT on
> a DMR programmed to the correct Call Group, and hear it on a Analog radio tuned to the Mastr
> III frequency. But I can not hear the Analog radios return, it doesn't seem to trigger the
> URI.
>
> If I use pin 8 on the URI (active low) and connect it to P5-17, or P5-20 (COR & CTCSS both
> Active High) on the Mastr III backplane, the URI goes into a broadcast storm. Using any of the
> optional pins for COR (2 & 3 both listed as active high) nothing happens. I suspect since these
> are GPIO, the configuration (for the URI?) is incorrect.
>
> I know the URI works, as I was able to use it to drive an XPR5550e programmed to the analog
> frequency of the Mastr III. It's just not the best situation to run it like that. You clearly
> hear dispatch, but since I'm not tapped onto the return path of the antenna connected to the
> Mastr III, the mobiles response clarity is dependent on the proximity to the antenna of the
> XPR5550e.
>
> "Double check your programing too, as the Mastr III IO is based on programing.
>
> You'll need to ensure you have your de-empahsis and pre-emphasis setup
> properly too."
>
> I do not have the Mastr III programming software (and can't seem to find it anywhere). Another
> user in this list says he has it, but it searching for it. So, I have no idea how it's
> programmed. It's possible the backplane connecters for audio out are disabled?
>
> Thanks for your help.
>
> --Bret Taylor
>
> Olympia School District
>
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