Radioddity Extended manual for Radioddity DB25-D, DB40-D & GD-88 v3.0
© Radioddity 2023 page 152 of 252
12.9.22 Pre-alarm Time
This option and its value are not applicable for the Radioddity DB25-D, DB40-D or
the GD-88. Please ignore it.
12.9.23 Response transmission interrupt
This option and its value are not applicable for the Radioddity DB25-D, DB40-D or
the GD-88. Please ignore it.
12.9.24 Scrambling frequency
This option and its value are not applicable for the Radioddity DB25-D, DB40-D or
the GD-88. Please ignore it.
12.9.25 Keylock Password On/Off
This option and its value are not applicable for the Radioddity DB25-D, DB40-D or
the GD-88. Please ignore it.
12.9.26 Keypad Password
This option and its value are not applicable for the Radioddity DB25-D, DB40-D or
the Radioddity GD-88. Please ignore it.
12.10 APRS
The APRS (Automatic Packet Reporting System) protocol has first been used back
in the early 80s and got lot of extensions since then. Within amateur radio and in
combination with a GPS receiver it is mainly used to publish the current
geographic position to a repeater or an iGate whereas those do forward the
information to other sites, such as https://aprs.fi. More details on APRS to be
found at http://www.aprs.org/.
The Radioddity DB25-D, DB40-D and Radioddity GD-88 are all capable of analog
and digital transmission of GPS position data (called ‘APRS beacon’) using the APRS
protocol. Those parameters in common are specified within the topmost block of
the APRS parameters.
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