SDR receiver dongles that plug into a USB port on a computer are under $10 these days. There's free open source software that let's them receive FM broadcast and much more. 

As for making interference problems negligible I'm not sure how they would do that for FM broadcasts. If you go to other spread spectrum of frequency hopping techniques, then you can do a lot to avoid interference, but that won't work with a conventional radio like in your car. 

Transmitting hardware is more expensive. HackRF has a kick starter going and hope to build one they sell for $300. BladeRF is around $420. USRP is around $1000. 

Steve

On Monday, November 4, 2013, Eddan Katz wrote:
I've read about software-defined radio making interference problems negligible (can't find anything in particular at the moment - but most coming from the IEEE publications).

I'd be interested whether others (a) understood if this is true; (b) knew of affordable SDR equipment; and/or (c) thought this would solve the problem.


Sidenote: While streaming-only radio stations do not have to deal with spectrum licensing issues, their Internet presence make broadcasting anyone else's copyrighted content a complicated and either expensive or risky endeavor.


sent from eddan.com


On 2013-11-04 12:52, Hol Gaskill wrote:
it does seem philosophically better to provide content on an opt-in
basis via existing RF links than to simply radiate it in every
direction and block that portion of the spectrum from other uses

on Nov 04, 2013, ANTHONY DI FRANCO <di.franco@gmail.com> wrote:

This sounds a lot like the mesh networking projects, which move away
from broadcasting as fundamental and rebase broadcasting in a
peer-to-peer context, and are already oriented the right ways
technically and with respect to regulations for those goals.
On Nov 4, 2013 11:31 AM, "David Keenan" <dkeenan44@gmail.com [23]>
wrote:

I find myself most sympathetic to Naomi's position - although I do
still think FM as a medium has some romance and cool left in it, I
don't know that it's actually worth it, given the cost and effort.


Completely naiive riffing follows, but -- since decentralizing
information and the means of production are (for me) integral to
freeing information / culture.. if one wanted to recolonize the
airwaves, I wonder if it might be possible to simply distribute
LPFM?

Ie, give people a small appliance that transceives internet radio
into LPFM or way lower-power radio, ie just for their block /
neighborhood / whathaveyou.. A device that doesn't take a whole
lot of power, that is innately not geographically bounded, and can
become a diaspora of signal. And not necessarily legal but
decentralized and dispersed.. if enough folks did this in
aggregate in a given neighborhood or community, could that
collectively function coverage-wise as a single relatively strong
broadcast / antenna?

Has anyone tried anything similar, or does this even make sense..?


dreamin'

On Mon, Nov 4, 2013 at 10:08 AM, Hol Gaskill <hol@gaskill.com
[20]> wrote:

agree on not having transmitter co-located with hq. dropping
repeaters nearby can also prevent pinpointing by birds overhead.

on Nov 03, 2013, NAOMI MOST <pnaomi@gmail.com [17]> wrote:

Dudes I was THERE managing tech for Pirate Cat went that all
went
down. See also:






http://nthmost.com/2011/04/radio-valencia-the-little-radio-station-that-could/
[1]

The major difference here to what was suggested above is that
Pirate
Cat hosted its antenna in many many different places over the
years.
We moved it every 3 months or so. And 95% of the membership
didn't
know where it was.

My point was to ask the question WHY put up the antenna at
all.

The return on investment for putting up an antenna --
particularly,
one physically located at the locus of control as opposed to
offsite
somewhere like in a van or something -- is pretty abysmal.
Listenership to the airwaves continues to drop.

If you decided to jam some corporate radio station, you'd be
implicating Sudo Room and the feds would come down on it
sooner or
later.

If you just wanted to squat some frequency in the lower band,
you'd
have an abysmal listenership at the cost of the power of
operating the
antenna.

It's just not that compelling an exercise for the amount of
risk.
Not for me, anyway. I guess a lot of people still feel that
the
airwaves are somehow inherently exciting.

--Naomi

On Sun, Nov 3, 2013 at 5:54 PM, Gregg Horton
<greggahorton@gmail.com [2]> wrote:
> We agree on absolutely nothing so I abstain

On Nov 3, 2013 5:17 PM, "GtwoG PublicOhOne"
<g2g-public01@att.net [3]> wrote:

>>
If someone or a group wants to propose or operate a radio
station in an
act of peaceful civil disobedience, they should research
the regs, laws,
and potential penalties, and talk with an attorney who has
represented
>> clients who have engaged in similar acts in the past. That
would be a
project for a group that is not formally identical with SR.

The most successful peaceful civil disobedience actions in
the past
>> fifty years have been conducted by people who were not
only
well-grounded in principles, but also had trained
themselves in how to
interact in a peaceful and effective manner with all of the
people they
>> would come into contact with, including law enforcement
and government
officials. The civil rights movement and the Clamshell
Alliance
anti-nuclear group are excellent examples to study, and
much of their
>> material can be found online.

All of that said, online/internet radio is still the
fastest way to
reach an audience with no geographic limits or regulatory
risks, and
spreading the word is easy. Linkage with other online
broadcasters can
>> build up a seamless network with 24/7/365 coverage.

To challenge the existing AM/FM broadcast status-quo, will
inevitably
require challenging station licenses in order to re-capture
spectrum.
>> And the best place to start is by challenging the crowding
of spectrum
by multiple redundant right-wing religious broadcasters.<




http://arstechnica.com/tech-policy/2011/10/fcc-fines-monkey-man-radio-pirate-10k-war-continues/
[4]
>> >
>
> The point is, if sudoroom decides as a group to broadcast
a signal
> from the roof or wherever (we can stream over the
internet you know)
> then sudoroom can decide for itself whether it wants to
keep going
>> > after getting a "ten day notice to cease broadcasting"
If that EVER
> happens.
>
>

http://transition.fcc.gov/eb/FieldNotices/2003/DOC-264276A1.html
[5]
>> >
> and if a broadcast is not coming from the building where
sudoroom is,
> then it is not even a matter for sudoroom to have to
decide on.
> Sudoroom can continue to have an internet streaming radio
station and
>> > leave it at that.
>
> _______________________________________________
> sudo-discuss mailing list
> sudo-discuss@lists.sudoroom.org [6]
>> > http://lists.sudoroom.org/listinfo/sudo-discuss [7]
>

_______________________________________________
>> sudo-discuss mailing list
sudo-discuss@lists.sudoroom.org [8]
http://lists.sudoroom.org/listinfo/sudo-discuss [9]
>

_______________________________________________
sudo-discuss mailing list
sudo-discuss@lists.sudoroom.org [10]
http://lists.sudoroom.org/listinfo/sudo-discuss [11]
>

--
Naomi Theora Most
naomi@nthmost.com [12]
+1-415-728-7490 [13]

skype: nthmost

http://twitter.com/nthmost [14]
_______________________________________________
sudo-discuss mailing list
sudo-discuss@lists.sudoroom.org [15]
http://lists.sudoroom.org/listinfo/sudo-discuss [16]

_______________________________________________
sudo-discuss mailing list
sudo-discuss@lists.sudoroom.org [18]
http://lists.sudoroom.org/listinfo/sudo-discuss [19]

_______________________________________________
sudo-discuss mailing list
sudo-discuss@lists.sudoroom.org [21]
http://lists.sudoroom.org/listinfo/sudo-discuss [22]

-------------------------

_______________________________________________
sudo-discuss mailing list
sudo-discuss@lists.sudoroom.org [24]
http://lists.sudoroom.org/listinfo/sudo-discuss [25]



Links:
------
[1]

http://nthmost.com/2011/04/radio-valencia-the-little-radio-station-that-could/
[2] mailto:greggahorton@gmail.com
[3] mailto:g2g-public01@att.net
[4]

http://arstechnica.com/tech-policy/2011/10/fcc-fines-monkey-man-radio-pirate-10k-war-continues/
[5] http://transition.fcc.gov/eb/FieldNotices/2003/DOC-264276A1.html
[6] mailto:sudo-discuss@lists.sudoroom.org
[7] http://lists.sudoroom.org/listinfo/sudo-discuss
[8] mailto:sudo-discuss@lists.sudoroom.org
[9] http://lists.sudoroom.org/listinfo/sudo-discuss
[10] mailto:sudo-discuss@lists.sudoroom.org
[11] http://lists.sudoroom.org/listinfo/sudo-discuss
[12] mailto:naomi@nthmost.com
[13] http://tel%2B1-415-728-7490
[14] http://twitter.com/nthmost
[15] mailto:sudo-discuss@lists.sudoroom.org
[16] http://lists.sudoroom.org/listinfo/sudo-discuss
[17] mailto:pnaomi@gmail.com
[18] mailto:sudo-discuss@lists.sudoroom.org
[19] http://lists.sudoroom.org/listinfo/sudo-discuss
[20] mailto:hol@gaskill.com
[21] mailto:sudo-discuss@lists.sudoroom.org
[22] http://lists.sudoroom.org/listinfo/sudo-discuss
[23] mailto:dkeenan44@gmail.com
[24] mailto:sudo-discuss@lists.sudoroom.org
[25] http://lists.sudoroom.org/listinfo/sudo-discuss

_______________________________________________
sudo-discuss mailing list
sudo-discuss@lists.sudoroom.org
http://lists.sudoroom.org/listinfo/sudo-discuss


--
-steve