VHF and HF APRS

• FT8900 : 2m I-Gate GM4SLV-2 - Raspberry Pi, TNC-Pi and APRX I-Gate software
  • UPDATE 6/4/24 : 2m APRS suspended. Coverage not adequate from low 2m antenna. Radio repurposed for svxlink Svxlink & Echolink
• TM-D710 in van : GM4SLV-9 - will digipeat “WIDEn-N”
• TH-D72 : GM4SLV-8
• Anytone 878
  • analogue : GM4SLV-7,
  • DMR
    • Brandmeister → PC 234999 (Self-Care set to GM4SLV-7)
    • DMR+/Phoenix → PC 5057 → GM4SLV-7

• Occasional use of 30m AFSK 10,147.6kHz USB as GM4SLV-10
  • IC-706 and Signalink-USB soundcard

• Direwolf
  • HF (300 baud FSK) or VHF soundcard modem/TNC
  • AGW Packet Engine TCP/IP interface to other software
  • standalone iGate and Digipeater
• Xastir
  • Can use the Direwolf TCP/IP AGW TNC across network
• WinRPR winrpr_075_2.zip
  • Can act as TCP/IP KISS mode TNC providing 300 or 600 baud Robust Packet TX/RX and also simultaneous 300 baud FSK RX
• APRSISCE32 aprsis32.zip
  • Can use WinRPR's KISS mode TNC
• UIView32 32full203.exe
  • Needs to be registered first at https://www.apritch.co.uk/uiv32.htm
    • ••••••••••
  • Can use Direwolf's AGW TNC across network

• 300 Baud FSK RF centre 10149.3kHz
  • 1700 Hz audio (1600/1800Hz tones)
  • Dial = 10147.6kHz USB
    • alternative dial = 10151.0kHz LSB (signal can be inverted without issues)
• 300 baud RPR RF centre 10148.8kHz
  • 1500 Hz audio
  • Dial = 10147.3kHz USB
    • Normal 300 baud AFSK resolves at 2000Hz - and is decoded by WinRPR at this offset

— John Pumford-Green 21/03/24 16:14