= FCI Antenna =

Most of the info on this page is proprietary and confidential to the manufacturer. Do not distribute!!!

== Hardware ==

==== IO Port ====
|| '''Pin''' || '''Name''' || '''Direction''' || '''Description''' ||
|| 2 || AHC_PWR_EN || IN || Connect to DGND to turn off the antenna head, leave floating (or pull to 12V) to turn on antenna head ||
|| 3 || PAT_CLK_232 || OUT || RS232 Levels, Antenna pattern change indicator ||
|| 5 || DGND || || ||
|| 9 || EXT_TX_232 || IN || RS232 Levels, Switch antenna between TX and RX, also requires commands via the CMD interface ||

To enable/disable the antenna from a Raspberry Pi or other microcontroller, the AHC_PWR_EN pin must be connected to ground through an NPN transistor as follows:

TODO Diagram of circuit

== Software API ==

==== Commands ====

|| '''Name''' || '''Format''' || '''Response''' ||
|| Configure Power Amp || <addr>'''x'''<padrive>''':'''<txgain> || drive: ...||