We designed a universal amplifier block for the 70cm band, that can be used with virtually any mode out there (including M17, of course). Thanks to GRF5604’s good linearity, high PAPR modulations, including SSB, QAM, and OFDM, shouldn’t cause much trouble.
The board should be supplied with 5V. Maximum useful power output (CW) is about 6W. See the chip’s datasheet for more details.
Note: an adequate heat sink is required. The boards do not come with SMA connectors. PCB’s thickness is 1mm. Output lowpass filter is included.
Our “Shared Project”: https://www.pcbway.com/project/shareproject/LinHT_RF_amplifier_ff94e9ca.html
Enjoy!
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