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Software/portapack-mayhem/hackrf/hardware/LNA915/README

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+Copyright (c) 2014-2020 Great Scott Gadgets <info@greatscottgadgets.com>
+
+These files are part of HackRF.
+
+This is a free hardware design; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This design is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this design; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 51 Franklin Street,
+Boston, MA 02110-1301, USA.
+
+
+LNA915 is a SAW filter and LNA for the 902 to 928 MHz ISM band.  It is designed
+for in-line connection between an antenna and HackRF One and is powered by the
+HackRF One.
+
+hardware notes:
+
+Schematic and layout files were designed in KiCad, an open source electronic
+design automation package.
+
+The PCB is designed to fit the Crystek SMA-KIT-1.5MF housing.
+
+order of copper layers:
+    Copper 1:  F (front)
+    Copper 2:  In1
+    Copper 3:  In2
+    Copper 4:  B (back)
+
+PCB description: 4 layer PCB 0.8 mm
+    Copper       1:  0.035 mm (1 oz)
+    Dielectric 1-2:  0.2 mm prepreg
+    Copper       2:  0.0175 mm (0.5 oz)
+    Dielectric 2-3:  0.265 mm core
+    Copper       3:  0.0175 mm (0.5 oz)
+    Dielectric 3-4:  0.2 mm prepreg
+    Copper       4:  0.035 mm (1 oz)
+
+7628 prepreg with Er=4.6
+double side solder mask green
+double side silkscreen white
+7 mil minimum trace width
+5 mil minimum isolation
+
+PCBs of this specification are available from JLCPCB (JLC7628 4-layer 0.8 mm stackup).