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# Adding additional frequencies (TX/RX)
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## Note: You must be on the latest release!
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Some changes I made to the available frequency settings (including unlocking them all). The file is found here:
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![Sub-Ghz_Changes ](https://user-images.githubusercontent.com/57457139/174948988-f6955976-2318-4e3e-b658-93f0465bb22e.png )
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Officially supported frequencies: 300-348 MHz, 387-464 MHz, and 779-928 MHz (from [CC1101 chip docs ](https://www.ti.com/product/CC1101 ))< br >
Unofficially supported frequencies: 281-361 MHz, 378-481 MHz, and 749-962 MHz (from [YARD Stick One ](https://greatscottgadgets.com/yardstickone/ ) CC1111 docs)
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Official & Unleashed currently do not allow anything outside of the officially supported CC1101 specs.< br >
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RogueMaster allows unofficially supported frequencies with the `extend_range` file.
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**NOTE: Going outside the supported frequencies may DAMAGE YOUR FLIPPER AMP.< br >
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Please understand what you're doing if trying to break out of official frequencies.**
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You'll need to edit some code and recompile if you want to break outside of the officially supported frequencies. [Proceed with caution. ](https://github.com/UberGuidoZ/Flipper/blob/main/Sub-GHz/Restaurant_Pagers/SubGHz_changes.md )
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# CAUTION within 402-408 range!<br>Medical devices can operate here.
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This range is purposefully not included in my file above.