Bukkit

Backwards compatible for all 1.1 versions.
Added /OPs are able to hear all local chat.
Added /OPs are able to receive all chat regardless of range
Added /OPs are able to read all chat.
Added Ping usage is /am ping playername permission is amchat.radio.personal.ping
Change Chat router to use methods instead of direct var access, there are still some calls directly but there are significantly less now.
Added Radio Link ID varible in AMChat main
Removed world check for amTools.getDistance
Added public method AMChatRadioManager.genSerial, this generates a serial number for radios
Added Custom Config for player radio settings>in pl.settings.yml
Added method to load/save player settings, these save between server restarts.
Added Custom Config for fixed radio settings>rm.settings.yml
Added Radio Transmitters, These are radio radios that allow you to transmit farther.
Added Operator override permissions for all command that have limits, these let you override any setting, use with caution.
Added Operator override permissions for all radio functions, such as linking/setting commands.
Radios are Created while in "sneak mode" and placing a Record player.
Added Ability for players to have a favorites list of radio's, this does not require them to be able to join the radio in order to add it, how ever they do have to join it before using short cuts willwork.
Added shortcut for favorites /XM #, # being a valid radio listed under /xm fav, type /xm fav id, to toggle a radio id as part of your favorites list.
Added Sign Feature which lists basic information about the radio, simply place any sign on the radio and it will automatically update the sign with details about the radio. Sign prefrence is N E W S, it will only update one sign.
Radio radios can be modified as follows, add 1 iron fence to increase the range,default 10m, add 1 iron/gold/diamond to add X number of users, default 1/3/4.
Radio towers have a default capacity of 1
Any block other than Iron Fence/Iron/Gold/Diamond/Obsidian will break the antenna, this includes air.
Added operator list commands for in-game(with permissions), /XM list & /AM list, this is resource intensive so try not to use it too much.

Permissions list
amchat.local.hearall Hear all local chat regardless of range
amchat.radio.list.* Grants both list permissions
amchat.radio.list.personal List all active player radios with settings
amchat.radio.list.fixed List all fixed radios with important information.
amchat.radio.hearall Hear all radio chat regardless of range/frequency
amchat.radio.readall Read all radio chat regardless of code/frequency
amchat.radio.override.* Grants all overrides
amchat.radio.override.tune Tune to any # including zero or negatives
amchat.radio.override.code Set any encryption code with in respect to java
amchat.radio.override.cutoff Set any Positive value for cutoff
amchat.radio.override.set Override “isAdmin” check when attempting to use /xm set
amchat.radio.override.admin Override all “isAdmin” checks for fixed radio towers
amchat.radio.override.link Never require a password to link to a radio
amchat.radio.override.info Show all information when using /xm info command
amchat.radio.personal.* Grants all personal radio permissions
amchat.radio.personal.use permission to use /am command /am
amchat.radio.personal.radio permission to turn radio on/off /am radio
amchat.radio.personal.mic permission to adjust mic /am mic
amchat.radio.personal.filter permission to adjust filter /am filter
amchat.radio.personal.tune permission to adjust frequency /am tune #
amchat.radio.personal.code permission to adjust encrypt code /am code #
amchat.radio.personal.cutoff permission to adjust cutoff /am cutoff 0-#
amchat.radio.personal.home permission to use the /am home command
amchat.radio.personal.ping permission to use /am ping <player> command
amchat.radio.fixed.* Grants all fixed radio permission
amchat.radio.fixed.create permission to create new fixed radio’s
amchat.radio.fixed.use permission to use /xm command
amchat.radio.fixed.link permission to use /xm link <id> command
amchat.radio.fixed.set permission to use /xm set <pass|code|freq|admin> <value>
amchat.radio.fixed.chown permission to give away ownership /xm chown <id> <player>| /xm chown <id> <offline player> <offlineplayername 2ndtime>
amchat.radio.fixed.fav permission to use /xm fav and /xm # commands /xm fav|/xm fav <id>|/xm #
amchat.radio.fixed.info permission to use /xm info command /xm info <id>

Scanning while linked to towers doesn't work yet.

If you create a tower while linked to another tower you will not be removed from the users list: use

/xm unlink before creating a new radio transmitter -or- /xm link id to link to the old tower and remove yourself form the que of the current tower you just created