[Ham-80211] Call for : Extended Frequency Support

Steve kb9mwr at yahoo.com
Thu Oct 9 12:50:28 CDT 2014


Atheros Chipset Radios are capable of operation between 2312-2732,
4920-6100 MHz.  The purpose of this message is to hopefully draw a few
talented hams out of the wood work that can make a programming
contribution to an the existing Broadband Ham Network firmware
project.

You can look at how the ham radio frequency allocations overlap the
Part 15 bands here:

http://www.qsl.net/kb9mwr/projects/wireless/allocations.html

The Part 15 overlap where all consumer devices operate is heavily
crowded, and thusly the noise floor is high hampering long range links
that we as hams would like to establish.   There are a couple third
party solutions to enable the extended frequency support to be able to
shift operations into the ham only portions of the bands.  Neither of
them presently have native OLSR support in addition to the extended
frequency support.  It would be highly desirable to see our own ham
firmware support the extended frequency support.

HSMM-Mesh / Broadband Hamnet Firmware

In the Fall of 2008, a group of amateurs from the Texas area announced
development of their own custom firmware for the WRT-54G to enable
HSMM-Mesh networking. This is the first ham specific firmware build.
It is also one of the first firmware builds to support OLSR, an ad-hoc
wireless mesh routing daemon.  Initially this ham firmware build was
limited to the Linksys WRT54 series of wireless routers.  In February
2014 the development team announced support for Ubiquiti 2.4 GHz
devices.   In July 2014 support was extended to Ubiquiti 5 GHz
devices.

I should clarify that this firmware does not yet support non-part 15
channels, aka, extended channels / custom frequencies.  Nor does it
yet support half-rate (10 MHz wide), or quarter-rate (5 MHz wide)
bandwidth channels to accompany use on ham only spectrum.

If you are knowledgeable with the Linux Kernel programming please
consider reaching out to the development team.

http://www.broadband-hamnet.org/download/firmware/

A discussion on the Broadband Hamnet / HSMM-Mesh ham firmware about
using channels outside of the Part 15 space:

http://www.broadband-hamnet.org/hsmm-mesh-forums/view-postlist/forum-1113/topic-1113-default-channel-1-why-not-use-channel-0-or-channel-1.html

If we can develop the firmware that enables ham channels, Heikki
Hannikainen OH7LZB presented at the 2013 DCC a way to authenticate the
person who might like to download it is a ham.

http://www.youtube.com/watch?v=7anDmQQfyu8 Video presentation from the DCC
http://authtest.aprs.fi - authentication demo site
https://github.com/hessu/ham-cert-web-demo - Apache configuration and
PHP scripts


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