Objectives
- To encourage the use of digital modes for message passing.
- To practice relaying messages that may have been received on other modes ( e.g. SSB/CW )
- To reinforce that the message format should not change between transmission modes.
Times
0800 – 1100UTC July 30th
1400 — 1700UTC July 30th
Frequencies
- Any digital gateway frequency appropriate for the mode being used.
- 18.160 MHz P2P Pactor 1−2−3 G0DUB
Procedure
From 0800 – 1100UTC stations should send messages in plain text IARU format to one of the following destinations;
Winlink: G0DUB
APRS: G0DUB
e‑mail: exercise@raynet-hf.net
The Subject line of the message must be in the format “//WL2K R/ G0DUB Chester GBR” allowing the message to be sent through ‘hybrid mode’ Winlink, whitelisting the destination email address, setting the message priority and showing the callsign and city of the destination.
The body of the message is as described below.
APRS messages should follow the format specified in http://aprs.org/doc/APRS101.PDF page 75 “NTS Radiograms”.
Between 1100 UTC and 1400 UTC, G0DUB will review all messages received and prepare responses/comments which will be sent from 1400UTC.
Participating stations should check in again with their digital systems between 1400 – 1700UTC to pick up those responses.
Messages
Messages should be sent in plain text format, the content is not critical in this exercise. The key feature is that the message format is followed.
Example;
1 R OM8ST 13 KOSICE SVK 0800 JUL 30
GREG G0DUB
CHESTER GBR
BT
MESSAGES SENT OVER CW AND
VOICE MODES ARE ALSO ALL
CAPITALS X 73
BT
STAN OM8ST KOSICE SVK
Reporting
Stations will have received feedback that their original message was received correctly. If no feedback is received then email exercise@raynet-hf.net to report that two-way communication failed.
After the test, information will be compiled on how many messages were exchanged and how many were successful in meeting the exercise objectives.