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D-RATS RF Access Point

 

I've been retired for a number of years now, but I don't think it's an issue starting d-rats, if you wanted it for everybody, you would probably start it in the inittabs file, or if for only one or a select number of people, I think you would put it in the .cshrc file.? I may have forgotten a few things but I think I'm close.? So has d-rats been compiled for the linux x86 family?
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Jim k6nra
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------ Original Message ------
From: "n3tsz@... [d-rats_group]" <d-rats_group@...>
Sent: 6/16/2015 4:29:49 PM
Subject: Re: [d-rats_group] D-RATS RF Access Point
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Right now I'm using Teamviewer for remote access, as it's a Windows XP box now. I'm thinking I want to change it to a lightweight version of Linux. I'm looking at LUBUNTU. The .iso still fits on a CD. I also have to look at how to put D-RATS in the startup queue. I'm beginning to think the fldigi module is not going to work as well as I had thought, so I might drop it from the project.


I do not know what port Wires-X uses.
Fldigi uses port 7322 to communicate with its ARQ module. That is how I got it talking to D-RATS.
 

Here is the latest daily build for Linux:


Unpack the tarball
Log in as root
Open a terminal window
Move to where the files are
Type: sudo python setup.py install

(the sounds don't work in the Linux version)

Enjoy D-RATS

Patrick (N3TSZ)
 

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The rc.local file is the best way to auto start d-rats and/or d-rats_repeater on Ubuntu and derivatives. I've got an example here somewhere of an rc.local file I modified to start d-rats_repeater on a Raspberry Pi and Odroid C1.

If you want to run Fedora I can provide a systemd script that starts d-rats_repeater as a system service. There is also an rpm repository on with d-rats-daily packages, and I host one as well.

73,
Mike, N0SO

On Jun 16, 2015, at 9:34 PM, n3tsz@... [d-rats_group] <d-rats_group@...> wrote:

?

Here is the latest daily build for Linux:



Unpack the tarball
Log in as root
Open a terminal window
Move to where the files are
Type: sudo python setup.py install

(the sounds don't work in the Linux version)

Enjoy D-RATS

Patrick (N3TSZ)
 

I'm satisfied with how my UHF and VHF radios are working on my RF access point. I have bridged the over to RAT2 (ref.d-rats.com port 9001). If you are in or near FN20kb, feel free to give them a try. I am also rethinking using FLDIGI for D-RATS on HF. After some input from group members and some testing by AB4MW, 300 baud AFSK (it's not packet) is worth looking at. Soundmodem on the Windows platform is easy to set up and interface to D-RATS via the AGWPE connection. It appears to a lighter load on the CPU also. The latest version also has BPSK available and I am interested to see how that will work under real conditions. I'm also still casting about for an HF frequency to use. The end goal is to make this available for EMCOMM use. Nearly all of the NBEMS crowd are on 40M during the day and 80M at night. I had originally thought of using one of those two bands and an NVIS antenna for regional coverage. But I like 30 meters too. A magnetic loop antenna would be smaller and it would give stations further out access to the local activity. It sounds like I'm talking myself into connecting two or three HF radios now. I'm on the horns of a dilemma. Any input on any of the topics is welcome.
Thanks for reading
Patrick (N3TSZ)
Mitch Winkle
 

I would suggest Direwolf and TCP/IP KISS connection if you are using the old AFSK Bell modem.? Direwolf is a superior decoder.? You could also use Direwolf's "-p" switch to I/O through a PTY in Linux and make your D-RATS connection (type TNC) using mkiss.? See the Direwolf User's Guide for instructions, but it looks something like :

# Start Direwolf quietly and send to /dev/null
direwolf -t 0 -q h -q d -c /root/direwolf1.conf -p > /dev/null 2>&1 &
sleep 2
# make the "connector" to the one Direwolf creates (/tmp/kisstnc)
# (the "9600" here is your serial port speed, not critical but a good default)
/usr/sbin/mkiss -s 9600 -x 1 /tmp/kisstnc > /tmp/unix98???
# This creates a PTS interface like "/dev/pts/1", so go find it's name
PTS0=`more /tmp/unix98 | grep -w /dev | cut -b -11`
# in this call to kissattach, "hf" is my /etc/ax25/axports port name
/usr/sbin/kissattach $PTS0 hf

Patrick, Happy to install soundmodem and test for you to do some RX decoding using PSK300.? Say the word.?

I am also very happy with 30m for regional and long reach, usually out to 900 miles or so.? I have been using FSQCall on 30m (10144) for the past 24 hours and have made contacts as close as South Carolina ( I am in VA) and as far as Maine to the North, and actually Switzerland yesterday evening to the East.? Also Missouri to the West, and decoded South Florida quite well also.

I am ALWAYS up for experimenting on digital, folks, so don't hesitate to shout out!

73,

Mitch
--
Mitch Winkle

...How long will you go limping between two different opinions? If the LORD is God, follow him...
1 Kings 18 ESV
Mitch Winkle
 

When the FLDIGI team stabilizes their KISS code with a TCP interface instead of UDP, I think it will definitely be a viable option, particularly for the fast modems over FM VHF/UHF.? The 8PSK modems are designed specifically for this, but the UDP KISS interface is rather fussy at the moment.? Getting away from the old Bell modems would be a really awesome thing to do.? There are much better options in FLDIGI, but for the lack of the stable KISS connectivity.

I have my ear pressed to the ground on that front and they ARE working in that direction.? Stay tuned.
--
Mitch Winkle

...How long will you go limping between two different opinions? If the LORD is God, follow him...
1 Kings 18 ESV
mitchwinkle@gmail.com
 

I got a copy of test FLDIGI code for the KISS TCP/IP connetivity.? Will be testing at my next opportunity and will report back.
mitchwinkle@gmail.com
 

All by myself testing the TCP code so far, but it's working and I am making AX.25 connect calls now using BPSK250.
 

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Mitch. ..will be able to try this weekend. ? ? ? ? ? ? ? 73 Lee WB4QOJ
West Metro Atlanta


From my Android phone on T-Mobile. The first nationwide 4G network.


-------- Original message --------
From: "mitchwinkle@... [d-rats_group]"
Date:07/07/2015 2:54 PM (GMT-05:00)
To: d-rats_group@...
Subject: [d-rats_group] Re: D-RATS RF Access Point

?

All by myself testing the TCP code so far, but it's working and I am making AX.25 connect calls now using BPSK250.
Mitch Winkle
 

Awesome.? I'll be around in the morning, later in the afternoon tomorrow and Sunday afternoon after church.

We can probably use 7103 or 10141.6 given our proximity.

--
Mitch Winkle

...How long will you go limping between two different opinions? If the LORD is God, follow him...
1 Kings 18 ESV

On Fri, Jul 10, 2015 at 1:33 PM, gadigital gadigital@... [d-rats_group] <d-rats_group@...> wrote:
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Mitch. ..will be able to try this weekend. ? ? ? ? ? ? ? 73 Lee WB4QOJ
West Metro Atlanta


From my Android phone on T-Mobile. The first nationwide 4G network.


-------- Original message --------
From: "mitchwinkle@... [d-rats_group]"
Date:07/07/2015 2:54 PM (GMT-05:00)
To: d-rats_group@...
Subject: [d-rats_group] Re: D-RATS RF Access Point

?

All by myself testing the TCP code so far, but it's working and I am making AX.25 connect calls now using BPSK250.
mitchwinkle@gmail.com
 

I am available for a while if anyone has the ability to do BPSK250 via AX.25 on HF....connected to D-RATS.? Let me know and I will switch over on any band that works.
mitchwinkle@gmail.com
 

Also learned yesterday, that the AX.25 port (axports) and the AX.25 interface are NOT NEEDED at all.

Simply start Direwolf, link to D-RATS using a socat command and that works as long as the AX.25 checkbox is checked in the TNC config dialog.

Unfortunately, if you UNCHECK the AX.25 checkbox, this breaks the configuration and the "Radio" will not work.? Still looking for answers on that one.

I am using 0.3.3
mitchwinkle@gmail.com
 

Figured it out.? Just had to manually edit the d-rats config file to fix the radio port definition

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