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Updated Microphone Transceiver (markdown)

Mark Thompson 2023-08-30 23:02:12 -05:00
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Microphone-Transceiver.md

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Checking Portapack-Havoc repository , we can see , that this excellent app was initially developped by Furrtek in 2017.
* "**Microphone FM transmit with CTCSS**", providing support to Narrow Band FM Transmitter + CTCSS & Receiver in Half Duplex operation, like a walkie-talkie (two-way directional voice communication but one at a time).
Later on , thanks to many other great sw developpers , gradually it has been added many more nice functionalities (VOX control, Roger Beep,...) ,and improving it day by day ...
Later on , thanks to many other great sw developers , gradually it has been added many more nice functionalities (VOX control, Roger Beep,...) ,and improving it day by day ...
And from Sept -2020, it was also added the support of multi analogue mic Modulation types in half duplex TX / RX, highly appreciated specially by all ham amateur radio community. Those mod types are widely used in LF, HF , VHF, 2m band , maritime communications ,airport airband communications, UHF PMR446,...
And since them we are currently supporting those following ones (valid from , [Nightly Release - 2022-10-17](https://github.com/eried/portapack-mayhem/releases/tag/nightly-tag-2022-10-17) onwards) :
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* **F:** This field set the TX Frequency for the transmitter .
* **F:** This field set the TX Frequency for the transmitter. Use encoder dial to adjust by Step value (uses a default step value, or step value saved in SETTINGS\tx_mic.ini file if "Load App Settings" is enabled). A long press of the Select button allows adjusting frequency digits individually.
* **F_RX:** This field set the RX Frequency for the receiver.
* **FM TXBW:** This field sets the FM Band Width of the transmission under normal conditions from 0-150 kHz. (In fact, it is the +/- FM deviation in Khz.)