ARISS Packet System

Operating Instructions and Advice

Bob Bruninga WB4APR, and Roy Neal K6DUE

revised 2004-02-09  

ISS is now digipeating packets via the UNPROTO call of ARISS.
Uplink is 145.99 and downlink is 145.80.

Here is how to operate via ISS!

 1) Do not attempt a connection to any other station. It is a fruitless  exercise and only adds QRM to a very busy channel.

 2) ANY TNC:

Set UNPROTO to CQ VIA ARISS.
Then go to converse, and TYPE  greetings or messages to others that you see on the downlink...
If you  see your packet digipeated via ARISS, so did everyone else...

 3) Kwd D700 or D7(G):

Set one of your program memories for this  application.
Set data TX on band B to 145.990.
Set data RX on band A to  145.800.
Set packet to 1200 baud.
Set path to ARISS.
Go to MSG GROUPS  and add the wildcard "*" to the list so you can see messages to anyone.  Operate normally. (D7A users see below)..

 4) APRS:

Turn off ALTNET filters.
(In APRSdos set CONTROLS-FILTERS-OTHER) 
Set unproto path to ARISS.
Set radio to transmit on 145.99 and receive  on 145.80.
You can send messages to anyone you see. 
Once you see your message digipeated in the downlink, so did your intended recipient.  Do not expect an ACK. 
Go ahead and erase the message to stop it from adding redundant QRM to the channel

For a real eye-opener, visit http://www.ariss.net  to see the map !

 SHARING THE BAND.

If you see your OWN packet digipeated (MY PACKET) then  everyone else in the country also saw you, so no need to repeat that  packet for at least 2 or 3 minutes.

 To help explain just how APRS fits into the UI packet Experiment going on the ISS, Bob has prepared a little FAQ page which he hopes will help.

http://web.usna.navy.mil/~bruninga/iss-faq.html 

For the history on the success of UI DIGIPEATING in space see the MIR  pages in http://web.usna.navy.mil/~bruninga/astars.html