APRS RX

Automatic Packet Reporting System

• Display streams of informations using APRS protocol
• The information displayed is the received streams and a list of the "Source" "Location" "Hits" and "Time".
• The coloured bars display the received signal strength (Red), baseband signal strength (Blue).

Pre-configured "Regions" (geographic area)

• North America (NA)
• Europe/Uk (EUR)
• Australia (AUS)
• New Zealand (NZ)
• ISS (International Space Station)
• MAN (Manual) if the frequency is manually changed

Controls

Frequency input, if not using Pre-Configured setting.

• Use rotary encoder over frequency field to move it by steps of 100 Hz
• Press middle button over frequency field to manually enter a frequency using keypad

Radio settings

From left to right:

• AMP , "0" or "1"
• LNA
• VGA

Volume

• audio volume level is placed after the colored signal strength bars. When focus is over it, use rotary encoder

Important notes

• APRS RX and the hackrf are a bit deaf. They may need AMP on to have correct reception.

⚠️ Be careful not to toast your unit with too strong signals

• Some stations may have a bandwidth larger than the default 8,5khz. You can try to increase your reception bandwidth in the APRS RX setting file named rx_aprs.ini , in the SETTINGS folder. Browse to it using fileman, edit it by clicking on it, press down to select the pen icon, press OK. Once notepad is started, go to the line starting with 'nbfm_config_index', and change the value. It should be 0 for 8.5kHz, 1 for 11kHz and 2 for 16kHz. you can try to change the 0 to 1.