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> Radio on the K700i
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My apologies if this has been discussed before on the forums, but this is my first post, and I've spent the last couple of hours sifting through the forum looking for something that remotely answers my question.
I hope to be the proud owner of a K700i in the next couple of days, and I've been trying to read up on it as much as I can... I mean, I don't even have the darn phone, and here I am looking at screensavers and the like! Anyhow, I'm excited about the whole thing, but back to my question...
I know that the K700i has an FM tuner, but (and some of you might think this weird) I've been trying to find out if it is at all possible to receive AM on the K700i... or on any other mobile phone for that matter. I've tried Google a number of times today, and I finally landed on Esato, but there's just a wealth of info here and I've been sidetracked reading about all these cool "tricks and tips" (your words, not mine!), and I've been honestly fascinated. I've had my T68i for just over a year now and it's been an extremely loyal friend, and I'm sure the K700i will be too, but at the moment the question that's burning in my mind is whether AM can be received at all... and not just for the Sony-Ericsson range, but any other phone for that matter? I know I should be grateful that it will receive FM, and I am... but I do study engineering, and it would be an interesting experiment of sorts to know why I've been unable to find a phone that has an AM tuner.
I appreciate any replies to my question.
-Ash
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Posted: 2005-01-12 22:33:44
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k700i is only fm not am
[ This Message was edited by: jeko.uk on 2005-01-12 22:04 ]
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Posted: 2005-01-12 22:54:35
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I think he.she knows that lol
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Posted: 2005-01-12 23:00:59
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It cannot receive AM radio and neither does any other phone or mini FM Radio.
As I understand it:
FM=Frequency Modulated
AM=Amplitude Modulated
FM uses an aerial (in the case of phones this is the headset) to receive the signal.
AM uses the whole radio (or the whole car in a car) as the receiver & depends on the directional orientation of it. Perhaps a phone would be too small to detect AM waves.
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Posted: 2005-01-12 23:05:00
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The difference between AM and FM is explained quite well here:
http://www.answerbag.com/a_view.php/4650
I guess if the phone had some software on it that could lift the signal from the carrier in an AM transmition then yes it is possible. It depends wether the phones tuner can be set to recieve the lower frequency AM, and wether the signal was strong enough from such a small ariel....hmmm
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Posted: 2005-01-12 23:18:57
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Thanks very much for your replies. I guess I needed to hear it from someone to convince myself that AM isn't yet possible on a mobile phone. That just might be something to work on for the future.
Again, thanks for the quick replies.
-Ash (lol@djpowelly over the "he/she"... I guess my name really does lean both ways)
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Posted: 2005-01-12 23:27:29
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your welcome and welcome to esato mate
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Posted: 2005-01-13 00:23:19
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IMO, AM radio is very much possible on a mobile phone. I don't know exactly what reasons manufacturers have why they didn't put AM receivers on mobiles but I don't believe it's because AM signals are difficult to catch -- in fact AM signals are easier to catch than FM, IMO.
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Posted: 2005-01-13 02:32:16
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I believe that the reason why AM isn't possible on small devices (like small CD Walkmans and mobile phones) is that AM needs a FERRITE BAR as signal receiver. The ferrite bar requires a minimum size which is too big to be contained in such devices. This is the grayish-black bar with wire wound around it, and you can see it fixed inside your am radio when you open it.
In portable devices, FM needs only a wire (like the headset cable) to act as antenna, in lieu of the telescopic antenna. Therefore no extra space WITHIN the device is sacrificed.
A pity, since I consider AM and shortwave programs as sometimes (often?) more interesting than FM, at least here in Manila.
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Posted: 2005-01-13 04:40:11
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That's true, my home stereo system comes with both an FM and AM aerial - the FM one is simply a thin bit of wire like the headset cable whereas the AM one is much longer and has to be coiled round an extra section.
John
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Posted: 2005-01-13 18:49:31
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