Module aprs 

APRS (Automatic Packet Reporting System) configuration types.

APRS is a tactical real-time digital communications protocol used by ham radio operators for position reporting, messaging, and telemetry. The TH-D75 supports APRS on VHF with features including position beaconing, two-way messaging, SmartBeaconing, digipeater path configuration, packet filtering, and QSY information exchange.

QSY function (per Operating Tips §2.3.3-§2.3.5)

APRS beacons can embed a voice frequency (QSY information) so that other stations can tune directly to a voice channel. In FM mode, the beacon includes the current Band A or B voice frequency. In D-STAR DR mode, the beacon also includes the repeater callsign; in DV mode, only the frequency is included. Per Operating Tips §2.3.4.

QSY display distance can be restricted via Menu No. 523 (per Operating Tips §2.3.5), limiting which QSY beacons are shown based on the transmitting station’s distance from the receiver.

Fixed-position beacon during GPS track logging (per Operating Tips §2.3.6)

When GPS track logging is active, APRS beacons can be transmitted from a fixed position (set via Menu No. 401) instead of the live GPS position. This is useful when operating from a known location while still logging a GPS track.

Digipeated beacon registration (per Operating Tips §2.3.7)

Beacons received via digipeaters are registered in the station list. The station list shows the digipeater path used.

VoiceAlert (per Operating Tips §5.3)

VoiceAlert is a CTCSS-based mechanism: APRS beacons are transmitted with a CTCSS tone so that stations monitoring the APRS frequency with matching tone squelch hear an audible alert, enabling quick voice contact. Menu No. 910 controls the balance between VoiceAlert audio and normal APRS audio.

These types model every APRS setting accessible through the TH-D75’s menu system (Chapter 14 of the user manual) and MCP programming memory (pages 0x0151+ in the memory map).

Structs

AprsCallsign

APRS callsign with optional SSID (up to 9 characters, e.g. “N0CALL-9”).

AprsConfig

Complete APRS configuration for the TH-D75.

AprsMessage

An APRS message (for RX history or TX queue).

AprsStation

A received APRS station report from the station list.

AutoReplyConfig

APRS auto-reply message configuration.

BeaconControl

Beacon transmission control settings.

DigipeatAlias

Digipeater MY alias (up to 5 characters).

DigipeatConfig

APRS digipeater (digital repeater) configuration.

FilterPhrase

User-defined APRS filter phrase (up to 9 characters).

FloodAlias

UIflood alias (up to 5 characters, e.g. “WIDE1”).

GroupCode

Message or bulletin group code (up to 9 characters).

McpSmartBeaconingConfig

SmartBeaconing configuration.

NavitraConfig

NAVITRA (navigation/tracking) configuration.

NavitraMessage

NAVITRA message text (up to 20 characters).

NotificationConfig

APRS notification sound and display configuration.

PacketFilter

APRS packet filter configuration.

QsyConfig

QSY (frequency change) information configuration.

ReplyMessage

APRS reply message text (up to 45 characters).

StatusText

APRS status text message (up to 62 characters).

TraceAlias

UItrace alias (up to 5 characters, e.g. “WIDE2”).

TxDelay

APRS TX delay before packet transmission.

VoiceAlertConfig

Voice alert configuration.

WaypointConfig

Waypoint output configuration.

Enums

AprsBand

Band used for APRS data transmission and reception.

AprsDataSpeed

APRS data transmission speed.

AprsIcon

APRS map icon (symbol table + symbol code).

AprsNetwork

APRS network identifier.

AutoReplyDelay

Auto-reply delay time.

AutoReplyType

Auto-reply type.

BeaconMethod

Beacon transmission method.

DcdSense

DCD (Data Carrier Detect) sense mode.

DisplayArea

Display area setting for incoming APRS data.

InterruptTime

Interrupt time for APRS data display (how long the display shows incoming APRS data before returning to normal).

NavitraGroupMode

NAVITRA group filtering mode.

PacketFilterType

Packet filter type.

PacketPath

Digipeater packet path for APRS transmissions.

PositionAmbiguity

Position ambiguity level for APRS position reports.

PositionComment

Predefined APRS position comment phrases.

WaypointFormat

Waypoint output format.