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Receiving cellular
Can you receive cellular phone calls on a modified scanner? I thought
with all phone being digital now you could not? |
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Newer scanners cannot be modified, but many others can be modified to
receive the cellular band. It is also possible to buy an unblocked model of just about any scanner that is intended for international sale by ordering it from another country (www.bander.com is one such source). This is, of course, illegal, but still quite possible. Older scanners may be able to receive cell images on frequencies that are +/- 21.4 MHz (2 times the IF) away from the cell frequencies. This is usually more difficult with triple conversion scanners. Not all cell phones are digital (yet). Somewhere I read that the OnStar system utilizes analog transmissions...this may depend on the area. There is always some analog activity in the cell bands, but it tends to be quite uninteresting, and in many cases, only one side of the conversation can be heard (this, too, depends on the area). Most cell phone activity is digital, however, and it will continue to go in that direction. Eventually, blocking a scanner will have no purpose. wrote in message oups.com... Can you receive cellular phone calls on a modified scanner? I thought with all phone being digital now you could not? |
"T-bone" wrote in message 9.130... wrote in news:1105980741.679905.177450 @c13g2000cwb.googlegroups.com: Can you receive cellular phone calls on a modified scanner? I thought with all phone being digital now you could not? There is very little activity in the old cell bands - What with analog roaming and such, there is still a little. So yes, people advertsing their scanners as UNBLOCKED !!!!! are really saying very little in practice - The only good reason to pay a premium to get one would be to bank on the possibility that some other service of interest will eventually move into this frequency region. WHAT the hell are you smoking dude? Do you even HAVE a scanner? or did mommy leave the computer turned on tonight? Digital sucks, just like FM never replaced AM radio, cause of the fast dropoff of signal over distance. There are more analog phones than ever in many towns, especially now that rates are low, lots more traffic. Go to a town of about 100,000 people that are spread out in the middle of Arizona or Texas or Utah. You will find a lot more people talking on cell phone frequencies than talking on the other public bands! |
"smokin" wrote in
nk.net: "T-bone" wrote in message 9.130... wrote in news:1105980741.679905.177450 @c13g2000cwb.googlegroups.com: Can you receive cellular phone calls on a modified scanner? I thought with all phone being digital now you could not? There is very little activity in the old cell bands - What with analog roaming and such, there is still a little. So yes, people advertsing their scanners as UNBLOCKED !!!!! are really saying very little in practice - The only good reason to pay a premium to get one would be to bank on the possibility that some other service of interest will eventually move into this frequency region. WHAT the hell are you smoking dude? Do you even HAVE a scanner? or did mommy leave the computer turned on tonight? Digital sucks, just like FM never replaced AM radio, cause of the fast dropoff of signal over distance. Yeah .. Still jamming down to Iron Butterfly on 8 tracks too ? There are more analog phones than ever in many towns, especially now that rates are low, lots more traffic. Go to a town of about 100,000 people that are spread out in the middle of Arizona or Texas or Utah. You will find a lot more people talking on cell phone frequencies than talking on the other public bands! I honestly gave up on eavedropping on cell calls years ago when I entered manhood. The few times I give the band a whirl these days theres next to little or no action - Maybe its different out in the sticks I dont' know _ I don't live out in the sticks, I live in a major urban area where most people can afford a decent phone and a decent plan. If your such a cell band authority, then try answering the question you step child dim rod. |
Well atleast now we know what you were listening for.
T-bone wrote: "smokin" wrote in I honestly gave up on eavedropping on cell calls years ago when I entered manhood. |
On the contrary the CDMA/TDMA phones still use the same band as the AMPS
units. As far as listening to conversations there are a few analog signals left but towers limit the amount of analog conversations as they take up a lot more space than digital. Analog seems more prevalent for customers from a TDMA provider traveling in a CDMA market or vise versa. So to answer his question - yes you can but you aren't going to here too much "T-bone" wrote in message Can you receive cellular phone calls on a modified scanner? I thought with all phone being digital now you could not? There is very little activity in the old cell bands - What with analog roaming and such, there is still a little. So yes, people advertsing their scanners as UNBLOCKED !!!!! are really saying very little in practice - The only good reason to pay a premium to get one would be to bank on the possibility that some other service of interest will eventually move into this frequency region. |
I notice our phones always switch to analog out here at home. We are on a
small ranch in Texas golf coast area. I know all the trees kill the digital signals. Had the same trouble with my police radio in the cruiser when I got close to home. I had to switch from the 800 trunked stuff to vhf to be able to hit the dispatcher. I guess this is kinda the same thing?? I know squatt about cell phone technology. haha! |
CDMA phones will, they are dual mode.
Brad. "Mark" wrote in message ... On Tue, 18 Jan 2005 13:25:15 -0600, "Sarge" wrote: I notice our phones always switch to analog out here at home. What kind of digital phone do you have that switches to analog? |
"Mark" wrote in message ... On Tue, 18 Jan 2005 13:25:15 -0600, "Sarge" wrote: I notice our phones always switch to analog out here at home. What kind of digital phone do you have that switches to analog? well I guess thats what its doing. its made by LG and we are on ATT. When it has a digital signal it displays a D in the corner and then here it says finding and the D goes off and the signal goes way up. |
CDMA is just a type of digital - just because a phone is CDMA doesn't
necessarily mean it is going have AMPS. Most cellphones sold these days are either dual-mode (digital(cdma-or-TDMA)/AMPS) or tri-mode(digital(cdma-or-TDMA)/PCS/AMPS) As far as switching to analog in rural areas this is my point its possible your carrier only covers it by a roaming agreement with another carrier by the usage of amps since the digital technologies don't match I have found that in sparse areas I prefer analog to digital cause I know when I'm going to get dropped by the amount of static vs the silence :) -P "nana" wrote in message ... CDMA phones will, they are dual mode. Brad. "Mark" wrote in message ... On Tue, 18 Jan 2005 13:25:15 -0600, "Sarge" wrote: I notice our phones always switch to analog out here at home. What kind of digital phone do you have that switches to analog? |
T-bone wrote:
wrote in news:1105980741.679905.177450 @c13g2000cwb.googlegroups.com: [clipped] So yes, people advertsing their scanners as UNBLOCKED !!!!! are really saying very little in practice - The only good reason to pay a premium to get one would be to bank on the possibility that some other service of interest will eventually move into this frequency region. That's not entirely true. Take Icom, and Yaesu, for example. When they block out the cellular portion fo the spectrum, they block out additional bandwidth below, and above the frequencies that the FCC requires them to omit. So you may not be able to monitor perfectly legal trunked systems, because they fall into this blocked-overlap, so to speak. In addition to that , many radios have to block portions of the spectrum that are in an entirely different band, due to the possibility of receiving cellular images. So you end up with a very crippled radio! Bill Crocker |
Bill Crocker wrote in
: T-bone wrote: wrote in news:1105980741.679905.177450 @c13g2000cwb.googlegroups.com: [clipped] So yes, people advertsing their scanners as UNBLOCKED !!!!! are really saying very little in practice - The only good reason to pay a premium to get one would be to bank on the possibility that some other service of interest will eventually move into this frequency region. That's not entirely true. Take Icom, and Yaesu, for example. When they block out the cellular portion fo the spectrum, they block out additional bandwidth below, and above the frequencies that the FCC requires them to omit. So you may not be able to monitor perfectly legal trunked systems, because they fall into this blocked-overlap, so to speak. In addition to that , many radios have to block portions of the spectrum that are in an entirely different band, due to the possibility of receiving cellular images. So you end up with a very crippled radio! Bill Crocker Well ... I guess its only crippled insofar as theres anything in the blocked portions worth listening to - And if Icom ect are dumb enough to block legit portions, then I simply would not purchase one. As far as blocking possible mirror freqs, I imagine they would be in the 700-900 range, and as such not much of a sacrifice. I thought the law was stupid when first enacted, and haven't changed that opinion. The responsibility to ensure private comms should have rested exclusively with cell phone providers - And as we all know, anyone with half a notion could listen to them nonetheless. I've learned to live with the ban though, and even though I have radios perfectly capable of receiving blocked bands, I never do - And would not pay much of a premium for a scanner that is unblocked ... Except, like I said, as a hedge against someday a service of interest moving to these bands. |
wrote in message oups.com... : Can you receive cellular phone calls on a modified scanner? I thought : with all phone being digital now you could not? : I noticed a few years back that there was a push to get cellular operations off of 800 Mhz in the US and 900 Mhz in Europe. Basically everything was being shifted to 1800 and 1900 Mhz. In doing some research, I have came across the overall plans. Look on a web site for UMTS (universal mobile telecommunications service). This was all decided in 1998 at a World Radio Conference. The web site is http://www.umtsworld.com. Look at the FAQ for overall plans to shift, it lists just about every Cell phone system in the world. The Technical section lists the frequencies (1800 to 2200 Mhz). It will not only be a phone system but a computer network and TV service provider. It also has a satellite phone component as well. The police want cell phones off of 800 Mhz. And they want 700 Mhz for data (MDT). BTW, Verizon just purchased Direct TV and SBC (Cingular) purchased Dish Network. The laws will need to be updated. |
I have a Bearcat 200 XLT scanner which can receive analog cellular from all
the surrounding cellsites. People seem to be still hanging on to their analog cell phones. The number of conversations has dropped due to digital cellphones but analog isn't dead yet. I can also hear conversations on my Ericcson cellphone when I put it into field test mode and enter the proper code. electronix_tech wrote in message oups.com... Can you receive cellular phone calls on a modified scanner? I thought with all phone being digital now you could not? |
"Electronics Tech." wrote in message ... I can also hear conversations on my Ericcson cellphone when I put it into field test mode and enter the proper code. electronix_tech Why? |
"nana" sputtered incoherently in
: Why? For the same reason you asked the question and a dog licks his testicles. -- You are a fluke of the Universe You have no right to be here And whether you can hear it or not, the Universe is laughing behind your back "Five-eleven's your height, one-ninety your weight You cash in your chips around page ninety-eight." |
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