Hotline

The hotline action provides a quick way to toggle between two stations for voice transmissions. You can use it to:

• Control on your primary frequency while listening to a hotline frequency, and quickly swap TX between the two when you need to talk on the hotline (e.g. controlling SEA_CTR and a ZOA-ZSE hotline).
• Control on your primary frequency while listening to a satellite field, and quickly swap TX between the two when you need to talk to a pilot at the satellite. (e.g. controlling Portland Tower on PDX_O_TWR and listening to Pearson Advisory on PDX_V_TWR)

Basic configuration

Start by adding the appropriate stations to TrackAudio. Your primary station should be added with XCA enabled and the hotline station should be added with RX enabled. Then configure the hotline action with the primary and hotline station callsigns:

Setting	Description	Example
Title	The title to show on the action.	ADVISORY
Primary callsign	The callsign in TrackAudio for the primary station.	PDX_O_TWR
Hotline callsign	The callsign in TrackAudio for the hotline station.	PDX_V_TWR

States

Interactions

Interaction	Description
Short press	Swaps the active TX state between the primary and hotline stations.
Long press	Enables TX on the primary station and disables TX on the hotline station.

Settings reference

Setting	Description	Required?
Primary callsign	The callsign you are actively controlling, for example SEA_CTR.	Yes.
Hotline callsign	The callsign for the hotline, for example ZOA-ZSE.	Yes
Both active	The image to display when both the primary and hotline and frequencies are the active frequency. This should never happen, as it means your voice transmissions will get sent to both frequencies.	No
Hotline active	The image to display when transmitting on the hotline frequency.	No
Listening	The image to display when listening to the hotline frequency.	No
Neither active	The image to display when neither the primary nor the hotline frequencies have TX enabled.	No
Receiving	The image to display when receiving a transmission on the hotline frequency.	No
Unavailable	The image to display when the primary and hotline stations are not added in TrackAudio.	No
Show hotline callsign	Show the hotline callsign on the action. Default off.	Yes
Show primary callsign	Show the primary callsign on the action. Default off.	Yes
Show title	Show the title on the action. Default on.	Yes

SVG template variables

All state images support SVG templates. The following variables are provided:

Variable	Description
hotlineCallsign	The hotline callsign.
hotlineFrequency	The frequency for the hotline callsign.
primaryCallsign	The primary callsign.
primaryFrequency	The frequency for the primary callsign.
state	The name for the action’s current state.
title	The title specified by the user.

The state names are:

• bothActive
• hotlineActive
• listening
• neitherActive
• receiving
• unavailable