[d-star] Fw: Digital Data with ID-1

[Mark Thompson]

The attached is information how the Virginia hams set-up their ID-1s to support the Marine Corp marathon. 

I wonder how this compares to how the Minneapolis group used their ID-1s and if they've documented their set-up? 
 73, Mark, WB9QZB
Chicago, IL

----- Forwarded Message ----
From: "Tom Azlin, N4ZPT" n4zpt at cox.net
Sent: Sunday, May 11, 2008 9:36:43 AM
Subject: Re: Re: DD with ID1

Hi Manos,

I am not sure exactly what you are trying to set up. But this is what 
worked or did not for a group of us here in Northern Virginia.

We do not have our local gateway up and running yet. But in prep for the 
2006 Marine Corps Maration we were not able to have two distant ID-1s 
that are both connected to the ID-RP2C/2D access point ping each other 
directly or connect to each other directly, but then we were not using 
the official G1 or G2 gateway, just a laptop behind the controller. Only 
when we had a service running on the laptop, like IRCd or a web server, 
were the two outstation laptops able to communicate. In this case 
running a standard chat program and a browser.

However several other set ups worked very nicely...

In learning how to use the ID-1s prior to the marathon we set up 
multiple pairs of ID-1s in DD mode where each pair worked as an Ethernet 
Bridge between two laptops. My recollection is we used DD simplex. i.e. 
not "RPS," to make this work as RPS only worked with the ID-RP2C/2D 
access point.  We also had them all on the same frequency with minimal 
interference except when we did large file transfers. This was step one 
just for getting experience with the DD mode.

http://d-star.mit.edu/index.php?title=Basic_ID-1_Point-to-Point_Connect

In the next step of our testing before we got the access point, we had 
one end of each pair plugged into a small Ethernet switch/router that 
was set up to deliver DHCP.  So the far end laptops were also able to 
get a dynamic address from the router. (in tests with the access point 
DHCP works sometimes, mostly does not work.) We then connected a laptop 
behind the router/switch to test the marathon configuration. Worked 
fine. Same as when I connected the small router/switch to my main home 
router/switch and we were able to browse out on the Internet. So this 
was our fall back for the Marathon. We had enough ID-1s to meet our 
readiness exercise success criteria.  Just would have had to put in 4 
different 23cm antennas pointing at each of the enabled aid stations.

As an aside, we found we could insert a pair of ID-1s in the above 
D-1<->ID-1 bridge and extend the bridge or wrap it around an RF corner. 
Nice thing about this is the little switch between the relay pair can 
drop ip service at that location. So you can support a string of 
locations using this method.

http://d-star.mit.edu/index.php?title=%22Bent_Pipe%22_repeating_with_two_ID-1s

We used this in the 2006 Marine Corps Marathon as one of our aid 
stations that was not in line of sight of the finish line access point. 
We also discovered reflections off of a local hotel worked fine.

and for the marathon we got our access point working with help from Icom 
and the K5TIT team. (Thanks guys!) So we went with ID-1s at all of the 
aid stations. (one had an equipment failure and one could not see the 
access point on 23cm but the rest worked and we passed the test.)

See the Amateur Video News Digital Voice DVD for a story on what was 
done at the 2006 Marine Corps Marathon with ID-1s. Used it again in the 
2007 Marathon with 9600 bps packet as an alternate. This year D-Star DD 
will be primary with 9k6 as our backup.

Several of us are going to test the DD mode with ID-1s set with CQCQCQ 
in the your call sign field. In the above pairwise bridging test tests 
the pairs of ID-1s had each other in the your field.  It did not matter 
what was in the RPT1 or RPT2 fields for the pairwise bridging.

Does this answer your questions?

73, Tom n4zpt

> --- In  "Manos Darkadakis" <sv1iw at ...>
>  wrote:
>> does anyone has been succesful in connecting two ID-1s in DD D-Star
>>  mode? We have a DD 1.2 module here in Athens and we try to connect
>>


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