UDRC setup

[Robert Sears]

If you have not found it yet and want to jump in here is the place to get started.

https://nw-digital-radio.groups.io/g/udrc/wiki/UDRC%E2%84%A2-and-Direwolf-Packet-Modem

[Robert Sears]

Has anyone else made any progress setting up your UDRC?

I have mine up but am having troubles getting programs like Xastir and APRSIS32 to transmit. I know the UDRC is working because DIrewolf transmits it's beacon just fine. I can see the data Xastir or APRSIS32 is sending to DIrewolf, but it never keys up the radio.

Robert/KF7VOP

On 10/19/2016 8:06 PM, Robert Sears wrote:

If you have not found it yet and want to jump in here is the place to get started.

https://nw-digital-radio.groups.io/g/udrc/wiki/UDRC%E2%84%A2-and-Direwolf-Packet-Modem

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[Gayland Gump]

I plan on working on it tomorrow.

Gayland

KG7GCF

On Fri, Oct 21, 2016 at 6:11 PM, Robert Sears <rts...@comcast.net> wrote:

Has anyone else made any progress setting up your UDRC?

I have mine up but am having troubles getting programs like Xastir and APRSIS32 to transmit. I know the UDRC is working because DIrewolf transmits it's beacon just fine. I can see the data Xastir or APRSIS32 is sending to DIrewolf, but it never keys up the radio.

Robert/KF7VOP

On 10/19/2016 8:06 PM, Robert Sears wrote:

If you have not found it yet and want to jump in here is the place to get started.

https://nw-digital-radio.groups.io/g/udrc/wiki/UDRC%E2%84%A2-and-Direwolf-Packet-Modem

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[Budd Churchward]

I am in Portland and not near my computer. You need to click a box. I think it is in the device menu ... is that the right word? Then you highlight the radio device.  I  use KISS Robert uses the AW?? device.  Then you click 'Properties ' and you will find a check box for 'allow transmitting'

On Oct 21, 2016 6:11 PM, "Robert Sears" <rts...@comcast.net> wrote:

Has anyone else made any progress setting up your UDRC?

I have mine up but am having troubles getting programs like Xastir and APRSIS32 to transmit. I know the UDRC is working because DIrewolf transmits it's beacon just fine. I can see the data Xastir or APRSIS32 is sending to DIrewolf, but it never keys up the radio.

Robert/KF7VOP

On 10/19/2016 8:06 PM, Robert Sears wrote:

If you have not found it yet and want to jump in here is the place to get started.

https://nw-digital-radio.groups.io/g/udrc/wiki/UDRC%E2%84%A2-and-Direwolf-Packet-Modem

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[Robert Sears]

No there is more to it than that, as not even APRSIS32 transmits.

Any program that uses DIrewolf is not transmitting, but they are sending their data to Direwolf.

Seems like a problem with the Direwolf config  to me.

I used the one on the UDRC Wiki and made sure I used the one for the UDRC2.

Robert/KF7VOP

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[Robert Sears]

Okay I got it figured out.

This is important to know when you configure the "Interface" in Xastir for the UDRC2.

The 9600 baud port is Transmit Radio Port 1
The 2400 baud port is Transmit Radio Port 2

I believe the default is 1 in Xastir and we are currently using 2400 baud packet so set it to port 2.

Now to figure out where to set that Xmit port in APRSIS32.

Robert/KF7VOP

[Art]

So I hooked up my pi 2 and UDRC (because i can't wait a day) to see what happens... I also got my multimeter hooked in to check out the current... at 12v it draws a max of around .2 ma.... and thats while its hooked up to a screen and everything! I'm going to keep testing it and see what happens... but I think it won't go much above that... this also means that a 'decent' solar panel with battery would be able to keep the battery charged AND run the pi at the same time =)

[Art]

I remember there was some talk about wiring and stuff and how its labeled...

so my question is this, i've found the 4 pins i need (pins 1-4) however I need to know if pin 1 (afin) or pin 4 (afout according to the wiki but the data sheet shows pin 5....?????) should be connected to the radio MIC or the Speaker connection....

Art

On 10/21/2016 10:01 PM, Robert Sears wrote:

[Budd Churchward]

On the image you gave me I had to switch to KISS to get mine to work.

[Art]

i wonder if its the gpio pin and pin permissions....

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[Keith Williamson]

As discussed at the meeting, the naming of the pins on the UDRC reflects the naming of the signals on the radio. So, UDRC pin 1 (AF In) connects to the radio's AF In (MIC) and UDRC pin 5 (AF Out) connects to the radio's AF Out (Speaker) for 1200bps packet. Alternatively (or additionally), UDRC pin 4 (DISC Out) connects to the radio's Discriminator Out for 9600bps packet. 

I wired the UDRC mini DIN-6 to the DB9 on my Alinco DR135T as follows:

UDRC Pin 1  <------------> Alinco Packet Xmit Data In (1200)

UDRC Pin 2  <------------> Alinco GND

UDRC Pin 3  <------------> Alinco PTT

UDRC Pin 4  <------------> Alinco Packet Recv Data Out (9600)

UDRC Pin 5  <------------> Alinco Packet Recv Data Out (1200)

UDRC Pin 6  <------------> Alinco SQC Out

This all seems to be working nicely and I have noticed that Direwolf reports some packets coming in on pin 5 (AF Out) but most coming in on pin 4 (Discriminator Out). 

If you don't have access to the Discriminator output on your radio, you'll need to use UDRC pin 5 connected to your radio's speaker out. 

I've found that the advantage of using the discriminator output from the radio is that I can leave the radio's volume at what ever I want (including all the way down if I don't want to listen to the incessant packet tones). 

Cheers,

Keith

KF7DRV