Improve your MyFi signal (Legality of incr'g MyFi
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Topic URL: http://www.neurosaudio.com/community/forum/topic.asp?TOPIC_ID=4882
Printed on: 01/04/2007
Topic:
Topic author: mbryner
Subject: Improve your MyFi signal (Legality of incr'g MyFi Hey all,
Replies:
Posted on: 10/15/2004 1:09:28 PM
Message:
We live in LA area & have a hard time using MyFi because of all the radio stations around here. I recently took our Neuros on a trip to Alaska where the radio waves aren't so congested. It was great having 200 CD's worth of music in the rental car w/ us. But MyFi still was crackly on stereo mode; much better in mono mode but still not perfect.
Joe Born has mentioned on the forum that the Neuros could broadcast a much stronger signal, but they can't sell it like that because of FCC regulations. Looking back on the forums for the past year, someone connected the RF port directly to the transmitter on the circuit board and got better signal. (The RF port isn't directly connected to anything on the circuit board from what I understand.) Another guy made an external antenna from Radio Shack parts and got better radio reception and MyFi signal -- but the antenna was 6-10 ft long, sort of unwieldy to take around with you!!! haha
So, if DI is limiting the strength of the MyFi signal, how is it limited? Software/firmware? Hardware? If it's firmware, we could make a hack to make MyFi stronger! (No legal issues for DI/Neuros Audio if they aren't involved in the hack, right?) If it's hardware, there might be a simple way of turning up the signal. Anybody try this yet, or have the guts to take apart their Neuros and look specifically at that part of the electronics. I haven't tried, yet....
I'm not asking about the legality of doing this ourselves; I'm just saying that if the user makes the mod, DI isn't held responsible. Anybody else thought about this??
Marcus Bryner
Reply author: Yono
Replied on: 10/15/2004 2:01:01 PM
Message:
Well...for informational purposes only (I am not responsible for what you do with this informaiton and neither is DI) there was a topic way back when: http://www.neurosaudio.com/community/forum/topic.asp?TOPIC_ID=3628
If you can get in contact with this guy, he could tell you what you want to know. (Then you could tell me )
-- 'Artificial Intelligence is No Replacement for Natural Stupidity'
Reply author: mbryner
Replied on: 10/15/2004 6:00:15 PM
Message:
Thanks Yono! That's what I'm looking for. (Must have missed that thread. That was about the time I bought my Neuros.) It looks like you were involved w/ that thread -- you didn't try it? The link for how to solder the RF port is dead (http://lupvista.org/neuros), but I e-mailed someone else who may have the diagram. Does anyone else have it? I can host it on my server if it works. Did anyone else on that thread try this mod and what were your results?
Marcus Bryner
Reply author: Yono
Replied on: 10/15/2004 7:56:59 PM
Message:
I was involved in the thread, but not enough information was given for me to try the mod myself (TO THE FCC: I would never do anything illegal, I would simply build it for expirimental purposes ) Anyway, ask around, someone might still have a cached copy of that lupavista page lying around.
-- 'Artificial Intelligence is No Replacement for Natural Stupidity'
Reply author: webkid
Replied on: 10/15/2004 8:17:39 PM
Message:
It's not like the FCC is tracing your IP, 209.142.21.150.
... uh, I mean, Yono.
Reply author: Yono
Replied on: 10/15/2004 8:31:07 PM
Message:
Ahh I sense Agent Smith....I mean Mr. Powell....he's watching me again! 
-- 'Artificial Intelligence is No Replacement for Natural Stupidity'
Reply author: mbryner
Replied on: 10/17/2004 1:31:28 PM
Message:
OK, I tried the hands-free kit antenna thing again. It really boosts output signal on MyFi quite a bit, which is exactly what I wanted. It doesn't do much for radio reception though. My results aren't quite what was advertised in the other thread about overpowering moderate stations on the same frequency, but the Neuros can overpower weaker stations now at least, and I can walk about 20 ft away from the stereo before the signal gets crackly.
(I had tried the hand-free antenna mod in the past, but only w/ radio reception (doesn't help), not w/ MyFi.)
To use, just cut off the earpiece and microphone off a 3/32" hands-free cell phone kit and put the plug into the RF port of the Neuros. Viola! Your mileage may vary...
Still don't know what to solder on the inside. I took the player apart and looked under the antenna, but it's hard to tell. If anyone wants to see the inside of the brain/player, I can post pics.
Reply author: webkid
Replied on: 10/18/2004 12:59:36 AM
Message:
quote:
Originally posted by mbryner
To use, just cut off the earpiece and microphone off a 3/32" hands-free cell phone kit and put the plug into the RF port of the Neuros. Viola! Your mileage may vary...
Funny, I posted almost exactly the same thing about 6 months ago.
Reply author: Yono
Replied on: 10/20/2004 2:59:24 PM
Message:
Lupavista article is alive thanx to webkid: http://neuros.php-help.com/antennamod
-- 'Artificial Intelligence is No Replacement for Natural Stupidity'
Reply author: CUTR
Replied on: 10/20/2004 3:43:55 PM
Message:
Since a hands free cell phone kit plugged in "without" cutting off the mic and earplug seems to have little affect, is it safe to assume the length to get to 1/4 or 1/8 wavelength is critical? If so, exactly how long should the antenna be from tip of plug to the end? Should the wires be connected when cut or does it not matter?
I'd be happy with a few feet more of range to work better in the minivan with antenna in rear window and don't really need what the internal connection mod seems to give.
Reply author: mbryner
Replied on: 10/21/2004 5:52:28 PM
Message:
quote:
Since a hands free cell phone kit plugged in "without" cutting off the mic and earplug seems to have little affect, is it safe to assume the length to get to 1/4 or 1/8 wavelength is critical? If so, exactly how long should the antenna be from tip of plug to the end? Should the wires be connected when cut or does it not matter?
It seems you have to make a "correct" dipole antenna for the optimum effect -- length? ??? I tried connecting the cut wires from the hands free kit, but it didn't seem to make any difference in the signal strength. You'll have to look at lupavista.org original article which still isn't back up (he had links to various resources), or other sources on building dipole antennas. My "antenna" is about 3 ft long and works best when it's straight vertical.
quote:
Funny, I posted almost exactly the same thing about 6 months ago.
yeah, I saw your post and others back then -- guess I should have just included a link!
I have a zipped copy of lupavista's article w/ images, if anyone wants it by e-mail.
Marcus Bryner
Reply author: webkid
Replied on: 10/21/2004 7:15:41 PM
Message:
I'm hosting a mirror of the original article online here:
http://neuros.php-help.com/antennamod/orgneuros.html
I don't know if lupavista wants me to do that, but until I hear from him/her, I'm happy to host.
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