README
Copyright 2012 Michael Ossmann

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.


Jawbreaker is the first complete HackRF platform, a wideband software radio
transceiver with a USB interface.

hardware notes:

Schematic and layout files were designed in KiCad, an open source electronic
design automation package.

order of copper layers:
    Copper 1: Front
    Copper 2: Inner3
    Copper 3: Inner2
    Copper 4: Back

PCB description: 4 layer PCB 0.062 in
    Copper        1   0.5 oz foil plated to approximately 0.0017 in
    Dielectric  1-2   0.0119 in
    Copper        2   1 oz foil (0.0014 in)
    Dielectric  2-3   0.0280 in
    Copper        3   1 oz foil (0.0014 in)
    Dielectric  3-4   0.0119 in
    Copper        4   0.5 oz foil plated to approximately 0.0017 in
FR4 or similar substrate with Er=4.5 (+/- 0.1)
double side solder mask black
double side silkscreen white
6 mil min trace width and
6 mil min isolation