.env.example

# Receiver Location Configuration
# Set these to your actual receiver location

# Latitude in decimal degrees
RECEIVER_LAT=-34.9192

# Longitude in decimal degrees (note: LON not LONG)
RECEIVER_LON=138.6027

# Altitude in meters
RECEIVER_ALT=110

# adsb.lol Integration
# Enable fallback to adsb.lol when local feed is unavailable
# The system will prefer local data and only use adsb.lol if local feed fails
ADSBLOL_ENABLED=true

# Radius in nautical miles for adsb.lol queries
# Aircraft within this radius of your receiver location will be fetched
ADSBLOL_RADIUS=40

# User-Agent sent to adsb.lol. They reject missing or generic agents with
# 403 "User-Agent too generic; include valid contact info." Set this to
# something that identifies you and carries a real contact address.
ADSBLOL_USER_AGENT=retina-node/1.0 (+https://github.com/offworldlabs/tar1090-node)

# How long an adsb.lol response may be reused before refetching (ms).
# Also throttles retries while adsb.lol is failing. Consumers project
# positions forward from the payload's own `now`, and blah2-api refuses to
# extrapolate more than 5 s, so keep this comfortably inside that budget.
ADSBLOL_CACHE_TTL_MS=3000

# Upstream request timeout (ms). Must stay below the consumer's HTTP timeout
# (blah2-api uses 5000) so a slow upstream degrades into stale-but-served.
ADSBLOL_TIMEOUT_MS=3000

# How long the last good response keeps being served while adsb.lol is
# failing (ms). Past this the proxy reports source 'none' rather than
# passing off arbitrarily old data as current.
ADSBLOL_MAX_STALE_MS=60000