Make QSOs via CQ APRS group (CQSRVR)
Using this feature, you can make contacts with other APRS users, which are part of CQ group. This feature uses a special APRS server, named CQSRVR (this service was developed by AE5PL). In order to use this service, you should do the followings:
Other groups could be: AMSAT, JOTA, ECHOLINK (Send CQ and the give local node), ISS etc.
When you send a CQ message to a group, you will be automatically registered in that group. In order to indicate your continous presence on specific group, you must send a CQ message to this group at every 30 minutes. If you are innactive for more than 12 hours, you will be unregistered automatically. Same rule is applied also for the group.
To unregister from a group, send an APRS message to CQSRVR with the following format: U [group_name].
The CQSRVR service provides also another useful commands:
Another special APRS server is ANSRVR. It is similar with CQSRVR but allows to join quietly to a group and also to send announcements to other users.
An announcement can be send via an APRS message to ANSRVR, with the following body text: CQ <Group> "Announcement Text".
Other commands supported by the ANSRVR server are the following:
Any APRS platform capable to handle message, can be used to predict the next passes of some amateur satellites. For this purpose, you have to send an APRS message to a satellite name available between brackets at the following link:
This file contains the TLE coordinates used by a lot of prediction applications for ama.
If you decide who is the recipient (which means what satellite pass you want to predict), then, in the message body you have to enter your call-SSID. Prior to this, we assume that recently, your position for this call-SSID was sent via APRS.
As a result, you will receive a message about the next or current satellite pass, as follows:
You can test this APRS feature starting with the International Space Station, during evening and nights with clear sky, because you can really see the object. First, beacon your position, then send an APRS message to ISS with text body yourcall-SSID. Be sure that yourcall-SSID is the same used when you prior beacon the position.