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Aug 14, 2010. 8:37 PMnworbekim
says:
i'll toss my bit in here... good idea, but not legal if you're in the U.S.A. ... here's a list of verboten communications in the GMRS (your walkie-talkie is a gmrs tool) spectrum. http://edocket.access.gpo.gov/cfr_2006/octqtr/47cfr95.183.htm
Jul 27, 2010. 2:57 PMfgrinst1
says:
Hey do you know which solder joint is ground and which one is hot (the signal)? Thanks!
Jan 15, 2009. 11:52 AMjumbuck
says:
A cool instructable.
I find the whole FCC legality thing a bit pointless , being that Instructables is on the World Wide Web and the FCC rules are only valid in the USA. For all we know Nepheron could live in Nauru or possibly on be drifting on a raft drifting in international waters.
In other words even if a instructable is fully compliant with U.S laws and regulations it could easily be deemed illegal in other countries.......
I find the whole FCC legality thing a bit pointless , being that Instructables is on the World Wide Web and the FCC rules are only valid in the USA. For all we know Nepheron could live in Nauru or possibly on be drifting on a raft drifting in international waters.
In other words even if a instructable is fully compliant with U.S laws and regulations it could easily be deemed illegal in other countries.......
Its a walky-talky with a mp3 hardwired into it... nothing illegal about that anywhere I know of... The The walky-talkys I used were FCC approved anyway.
Mar 17, 2010. 5:28 PMvov35
says:
You're fine... the Transmitter is weaksauce, and the frequency is open for public use.
Your responsibility is to not interfere with other radio users!
Your responsibility is to not interfere with other radio users!
Oct 3, 2009. 4:06 AMstatic
says:
Again it's hard to be positive and constructive when you obviously hadn't bothered to read the regulations after being called out by many. The instant anyone modifies the antenna of a FRS talky it's no longer type accepted by the FCC. Oh well this is a dead end road so time to turn around.
It would only be so if you amplified the signal (over a certain area) or modified it so that it interfered with other "appliances :-) i.e. other broadcasts; as far as I know
Jan 13, 2009. 7:23 PMArbitror
says:
Are you Serious?! A mono, or properly said, mono, is only one channel of audio. 2 channels of audio is called stereo.
Dec 25, 2009. 9:58 PMdarkclaw42
says:
Hey, ease up on the guy ^^ Instructables is a place where people come to learn. A place where instructions and manuals for things are easily found. ;)
Nov 19, 2009. 4:34 PMfwjs28
says:
ROAR MAN, IMA FRICKIN LANDSHARK...F-F-F-FRICKIN LAND SHARK!
Ok I understand. I just wasn't familiar to the term mono...I'm not exactly tech savvy, take a look at my other instructables and you will see that I am more inclined to make artsy things. This was a brainstorm from somebody (me) who knows very little about these things and it does exactly what I want it to. BUT really, at 2 solder joints and a couple of wire snips-- what did you expect it to do?
Jan 13, 2009. 8:04 PMArbitror
says:
Don't take me wrong, I think that this is awesome, especially if your not tech savvy! Sorry if I was a little harsh, but mono is a common term.
I DO know what mono means in relation to speakers and such but I thought he was talking about my transmitter. I suppose (I didn't know or even think about this before) that a signal is mono or stereo as well as the device that plays the signal as sound. Thanks for liking it
yep how could you get caught? its not like the police can track down a signal
Oct 3, 2009. 1:56 AMstatic
says:
The local PD has better things to do, and don't enforce FCC regulations. Otherwise it's not that difficult to track down.
Oct 4, 2009. 5:18 PMPadlock
says:
Actually, this may be legal. You do not need to own a transmitting license UNLESS your transmitter produces more than 250 µV/meter @ 3 meters, which roughly equates larger than a 200 foot radius. Of course, this all applies to FM radios; it may or may not apply.
Oct 18, 2009. 10:11 PMstatic
says:
Your correct them the 250uV @ 3 meters doesn't not apply here, as Part 95 limit radios used in the FRS service to 1/2 Watt, but doesn't even come close to permitting broadcasting. While the power figure you mentioned may apply to other unlicensed intentional radiators operating under part 15 I don't know, but it certainly applies to those operating in the 99-108 MHz band. FM has little to do with it, using AM, and other modulation in the 88-108 band as long as the other requirements of Part 25 Sec. 15.239 are meet. As long as one doesn't interfere with FCC licensed users of the RF spectrum, the FCC really does allow for plenty of experimentation, but one needs to do some research first. No doubt that nepheron acted out of ignorance first, but doesn't seem interested in learning where to go avoid such a mistake next time he decides to experiment with RF Part 15 operation in the AM broadcast band should be considered by DJ or talking political pundit wannabes.
Jan 29, 2009. 10:47 PMaDimWit
says:
They can track the source of the signal but it makes it really hard (impossible) if the source is constantly moving. With a tiny transmitter, that should be no problem.
Jan 24, 2010. 6:32 PMNoPegs
says:
Mmmm, search for "amateur radio foxhunt" and see how easy it is.
We're listening... :)
We're listening... :)
I was kind of sort of making things up as I go...
Oct 10, 2009. 10:46 AMctny
says:
Is there any rule on how long and what type of wire the antenna should be? I assume longer the better, so 10ft would be better? What if I connect it to rabbit-ear TV antennas? Is there a purpose to the swiggle?
Use anything you can, I supose. Rabbit ears would work fine. The squiggle is there just to look cool
Oct 10, 2009. 10:43 AMctny
says:
The goal of the hack is to bypass the mic with external input, why touch the speakers?
Jan 14, 2009. 9:43 AMgog
says:
I believe it is illegal to broadcast music over FRS FCC Restrictions
"These channels may be used only under the following conditions:
(1) Only voice type emissions may be transmitted;
(2) The station does not transmit one-way pages; and
(3) The station transmits with no more than 5 watts ERP.
(g) Fixed stations in GMRS systems authorized before March 18, 1968,
located 160 kilometers (100 miles) or more from the geographic center of
urbanized areas f 200,000 or more population as defined in the U.S.
Census of Population, 1960, Vol. 1, Table 23, page 50 that were
authorized to transmit on channels other than those listed in this
section may continue to transmit on their originally assigned channels
provided that they cause no interference to the operation of stations in
any of the part 90 private land mobile radio services."
"These channels may be used only under the following conditions:
(1) Only voice type emissions may be transmitted;
(2) The station does not transmit one-way pages; and
(3) The station transmits with no more than 5 watts ERP.
(g) Fixed stations in GMRS systems authorized before March 18, 1968,
located 160 kilometers (100 miles) or more from the geographic center of
urbanized areas f 200,000 or more population as defined in the U.S.
Census of Population, 1960, Vol. 1, Table 23, page 50 that were
authorized to transmit on channels other than those listed in this
section may continue to transmit on their originally assigned channels
provided that they cause no interference to the operation of stations in
any of the part 90 private land mobile radio services."
Oct 3, 2009. 4:11 AMstatic
says:
1/2 watt is the max for FRS operation. The 5 watt max is for licensed GMRS users. using the frequencies shared with FRS.
Jun 14, 2009. 11:54 PMtwocvbloke
says:
I was once noseying in on some conversations on my walkietalkie a few years back and I heard someone broadcasting their music over the waves too, it was that dancey (how you actually "dance" to it is a mystery to me!!!) ravey bingy bongy crap that weirdos listen to though , so I just switched off my radio and went to bed... :P
Oct 3, 2009. 3:18 AMtwocvbloke
says:
Doubtful, he's in the US, I'm in the UK, if he broadcasted that far, I'm sure some legal issues would have taken place... :P
Can you modify to send to an FM radio? And why put the bottle there when you can replace the cover?
Jan 18, 2009. 9:49 AMjunits15
says:
you should be able to lower the frequency by replacing the oscilator with something a radio can "hear" for example a 108 mhz oscilator
Thanks! this will save me money with those ipod transmitters!
Oct 3, 2009. 2:01 AMstatic
says:
put your money towards the low power FM broadcast band transmitter. This is mono, not anywhere close to HiFi, What I'm saying? MP3 is as far from HiFi one can get. :)
Jan 24, 2009. 5:48 AMjunits15
says:
use one of those toy walkies designed for childeren, also it might be a little dificult to find an oscilator that is the correct frequency, but good luck anyway! :D
Jun 12, 2009. 12:14 PMmovieman97
says:
i don't get why it is necessary to put it in a water bottle
Jul 18, 2009. 1:51 AMtheburn7
says:
buy a line out from the mp3 to a 1/8 to 1/32 adapter and put it in the walkie talkie, ive done it b4
I don't either. I just did it so I could enter it into a recycle-a-bottle-and-save-the-world-contest.
May 24, 2009. 7:24 AMMasterBowyer
says:
ha ha ha, all that's been hacked is the remote controller, and the 'voice over' comes from the amplitude modulator chip in the walkie talkie bleeding over the TV speaker... Thats SOOOOOOOOOOOOOOO funny! I'll add this one to the next HAM Newsletter.. cheers for the input....
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