Codec Frequencies

Since these would normally all be in the manual and I'm probably not the only guy who keeps goggling them.

Metal Gear Solid

140.15 - Meryl
140.48 - Deepthroat
140.85 - Colonel Campbell
140.96 - Mei Ling
141.12 - Otacon
141.52 - Nastasha Romanenko
141.80 - Master Miller

Integral secret frequences

140.66 calling this one will play different songs depending on what area you are in!
So far its only worked for me in the canyon, the entrance of the Comms Tower, and the snowfield.

140.07
Developer messages!

[𝔾ℝ𝔸𝕐 𝔽𝕆𝕏™]

⠀
⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀𝐆𝐫𝐞𝐚𝐭 𝐣𝐨𝐛, 𝐦𝐲 𝐟𝐫𝐢𝐞𝐧𝐝!
⠀
𝐀𝐧𝐲𝐨𝐧𝐞 𝐰𝐢𝐥𝐥𝐢𝐧𝐠 𝐭𝐨 𝐦𝐚𝐤𝐞 𝐠𝐮𝐢𝐝𝐞𝐬 𝐟𝐨𝐫 𝐭𝐡𝐞 𝐌𝐞𝐭𝐚𝐥 𝐆𝐞𝐚𝐫 𝐒𝐨𝐥𝐢𝐝 𝐠𝐚𝐦𝐞 𝐢𝐬 "𝐩𝐫𝐞𝐭𝐭𝐲 𝐠𝐨𝐨𝐝" 𝐢𝐧 𝐦𝐲 𝐞𝐲𝐞𝐬! 𝐂𝐚𝐧'𝐭 𝐰𝐚𝐢𝐭 𝐭𝐨 𝐬𝐞𝐞 𝐦𝐨𝐫𝐞 𝐨𝐟 𝐲𝐨𝐮𝐫 𝐰𝐨𝐫𝐤, 𝐟𝐫𝐢𝐞𝐧𝐝!
⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀𝔾ℝ𝔸𝕐 𝔽𝕆𝕏™⠀
⠀
⠀

[Ciaran Zagami]

Thanks for spotting that I'm blind

[Saint-Scorpius]

i think Meryl is 140.15, i cant wait to test the developer messages tho thanks