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2009-09-24
, 20:23
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Posts: 1,605 |
Thanked: 1,601 times |
Joined on Mar 2007
@ Southern California
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#22
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Originally Posted by qgil
Is that a stylus in your pocket, or are you just...?
Hum, a telescopic stylus. Think of it.
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2009-09-24
, 20:24
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Posts: 14 |
Thanked: 12 times |
Joined on Sep 2009
@ MA-US
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#23
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Originally Posted by pycage
We have a software controlled FM receiver, a mostly persistent IP connection and Python on a phone. We can do some really creative things. Time shifting with speed and pitch correction, scanner, social sharing or even a crude ad-hoc Mesh network (since we have both a transmitter and receiver). Serious tool for serious fun. =)
This is the first time I read about time-shifting with FM radio, but the idea sounds interesting.
Man, I hope they ship sooner than later.
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2009-09-25
, 06:26
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Posts: 3 |
Thanked: 3 times |
Joined on Aug 2009
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#24
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Originally Posted by pycage
This makes me think that what I thought was a crazy idea, isn't actually that crazy. If they are separated, that would mean we can have them tuned to different frequencies, right?
The Bluetooth chip is a combo-chip with Bluetooth and FM radio according to the data sheet that can be found at Broadcom for the BCM2048. Fanoush already pointed out months ago that the chip was a combo. The data sheet confirms this.
Transmitter and receiver sit on different chips.
What I was thinking, was a transmitter control app that uses the receiver to monitor for noise (not putting it to the audio device, of course). If the noise gets to a certain point, it starts scanning other frequencies for somewhere it can get a clearer signal. When it finds a clear frequency, it tells the user to switch to that on the radio they're using.
Does this sound doable (or useful) to anyone else?
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2009-09-25
, 06:39
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Moderator |
Posts: 7,109 |
Thanked: 8,820 times |
Joined on Oct 2007
@ Vancouver, BC, Canada
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#25
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Not only is there an FM receiver, but it reportedly can receive RDS. Which means even more fun... Theoretically, we could send data over our FM Mesh network.
Last edited by qole; 2009-09-25 at 06:42. Reason: linked to lardman's post
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Last edited by qole; 2009-09-25 at 06:42. Reason: linked to lardman's post
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2009-09-25
, 06:59
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Posts: 3,404 |
Thanked: 4,474 times |
Joined on Oct 2005
@ Germany
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#26
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Not only does it have RDS, but can also switch between the US/EUR and Japan FM bands, and this time it's already implemented in the driver code.
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2009-09-25
, 11:02
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Posts: 600 |
Thanked: 742 times |
Joined on Sep 2008
@ England
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#27
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Guys, before you get too excited please note that the FM transmitter automatically turns off when you connect any cable except the charger. Therefore we know that the FM transmitter uses an internal antenna.
On the other hand, the N900 will almost certainly will need the headphones plugged in as an antenna for FM reception, so don't expect to be able to receive and transmit at the same time.
Regards,
Roger
On the other hand, the N900 will almost certainly will need the headphones plugged in as an antenna for FM reception, so don't expect to be able to receive and transmit at the same time.
Regards,
Roger
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2009-09-25
, 13:04
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Posts: 119 |
Thanked: 110 times |
Joined on Sep 2009
@ Prague
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#28
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afaik, the FM transmitter only covers limited range - I would guess that similar to bluetooth-signal-coverage (as both fm and bluetooth are processed by the same chip).. but one could at least annoy people with fm radios at a beach, yeah.. 
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2009-09-25
, 14:57
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Posts: 670 |
Thanked: 359 times |
Joined on May 2007
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#29
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It is quite probable that the FM transmitter would, if it were operating at the same time as the FM receiver, desensitise the FM receiver, causing its Automatic Gain Control (AGC) to wind down thus preventing good signal reception, even with the transmitter and receiver tuned to different frequencies.
__________________
Class .. : Lame hacker & beardy boffin
Humour . : [#######---] Alignment: Apathetic anarchist
Patience : [####------] Weapon(s): My cat, my code.
Agro ... : |#---------] Relic(s) : N900, MacBookPro, NSLU2, N800, SheevaPlug, Eee-901, Core2-Quad, PS3
"In theory, theory and practice are the same. In practice, they're not."
--
Beware of extras-devel.
Class .. : Lame hacker & beardy boffin
Humour . : [#######---] Alignment: Apathetic anarchist
Patience : [####------] Weapon(s): My cat, my code.
Agro ... : |#---------] Relic(s) : N900, MacBookPro, NSLU2, N800, SheevaPlug, Eee-901, Core2-Quad, PS3
"In theory, theory and practice are the same. In practice, they're not."
--
Beware of extras-devel.
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2009-09-25
, 16:52
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Moderator |
Posts: 7,109 |
Thanked: 8,820 times |
Joined on Oct 2007
@ Vancouver, BC, Canada
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#30
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Good catch! The transmitter actually generates an error if you plug the headphones in, and the receiver won't work without them! Catch-22.
Originally Posted by eiffel
Guys, before you get too excited please note that the FM transmitter automatically turns off when you connect any cable except the charger. Therefore we know that the FM transmitter uses an internal antenna.
On the other hand, the N900 will almost certainly will need the headphones plugged in as an antenna for FM reception, so don't expect to be able to receive and transmit at the same time.
Regards,
Roger
__________________
qole.org --- twitter --- Easy Debian wiki page
Please don't send me a private message, post to the appropriate thread.
Thank you all for your donations!
qole.org --- twitter --- Easy Debian wiki page
Please don't send me a private message, post to the appropriate thread.
Thank you all for your donations!
N800 / Diablo / 16gb int / 16gb ext / Globalsat BT-359 gps ..... Dell Streak 5 - Android 2.2.2