* Add DECT frequency range. The most common allocated range fits within 1880MHz-1930MHz (different countries use different ranges). To provide extra detail at the edges I'm extending 1MHz the range on each direction. So the final range covers from 1879MHz to 1931MHz
* Add VHF Marine band. Even when Wikipedia says that the Marine Band covers from 156MHz to 174MHz, I couldn't find any channels defined above 163MHz. So, the final range I'm using goes from 155MHz to 163MHz to ensure some detail at the edges.
* Add a narrow range around 433MHz frequency. This is a widely used frequency for all sorts of remote controls, keyfobs, etc. I think it's useful to have a narrower range just focusing on this frequency
* Add FRS/GMRS frequency range
* Alphabetize the list of ranges, keeping the really big ranges of whole ITU bands and the full supported range at the end of the list
Added FM RADIO, AVIATION, AMATEUR RADIO (HAM), and ITU-defined FREQ BANDS. (we do realize that 902-928MHz is also used for ISM, and that FM list is having two nearly identical bands.)
Added a PRESETS.TXT file (inside /LOOKINGGLASS folder).
Also optimized the way the spectrum signal is integrated into the cascade.
Added provision for ranges lower than 240MHz but I am afraid that at this time it will not be advisable to lower ranges any more than 240MHz, since some artifacts and frequency running - moving out of place- occurs.
I can only hope that someone with a better understanding of hackrf's inner code can fix this issue and perhaps enhance the scanning speed.
I found some "original commenting" inside the code:
// TODO: Move more low-level radio control stuff to M4. It'll enable tighter
// synchronization for things like wideband (sweeping) spectrum analysis, and
// protocols that need quick RX/TX turn-around.
Which makes me think that there are things "missing" from the portapack side of the code, for allowing serious speed sweeping. So I am concluding that with current "portapack framework" this might be "the best possible thing".
It is to be noted that the "new" internal sweep mode code is signed by:
* Copyright 2016 Mike Walters, Dominic Spill
*
* This file is part of HackRF.
Maybe Mike or Dominic can be contacted and hopefully lend a hand on enhancing this code.
