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This unit is capable up to 1kW at 2m-band (144 MHz) and powered by +12V supply thru a separate cable (hi-power bias tee is not implemented). MMIC input is protected by a BPF. Therefore, due to the BPF insertion loss, the input NF is not extremely good, (only 1 dB NF approx.). All the Eagle and Gerber files are included.\n\n## Schematic\n![](./LNA_sch.png)\n\n## PCB (photos)\n* Unpopulated\n![](./PCB_unpopulated.png)\n* Populated. The input port is at near the lower right relay and the output port is at near the lower left relay.\n![](./PCB_populated.png)\n\n## BPF Response\nBPF simulation file (using RFSim99) is included also.\nPredicted performance:\n* **S21 -3dB from 135.67MHz - 150.07MHz**\n* **S21 -10dB from 131.1MHz - 154.5MHz**\n* **S21 -0.02dB and S11 -23.86dB at 139.1MHz** (WXSat band)\n* **S21 -0.31dB and S11 -11.59dB at 143.02MHz** (BPF Center Frequency)\n* **S21 -0.21dB and S11 -13.17dB at 144.3MHz** (EME Band)\n* **S21 -0.04dB and S11 -20.69dB at 145.8MHz** (2m AMSAT Band)\n* **FM Broadcast band rejection is better than -28dB (S21) at 108MHz**\n\n![](./Input_BPF.bmp)\n\n## Contributing\n1. Fork it [https://github.com/handiko/VHF-LNA/fork](https://github.com/handiko/VHF-LNA/fork)\n2. Create new branch (`git checkout -b add-blah-blah`)\n3. Do some editing / create new feature\n4. Commit your works (`git commit -m \"Adding some blah blah blah..\"`)\n5. Push to the branch (`git push -u origin add-blah-blah`)\n6. Create a new Pull Request\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fhandiko%2Fvhf-lna","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fhandiko%2Fvhf-lna","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fhandiko%2Fvhf-lna/lists"}