|
|
|
05-04-2005, 05:23 PM
|
#1
|
New Member
Join Date: Apr 2005
Posts: 12
|
7290 Making Nearby Speakers Buzz!
Please Login to Remove!
So, my company issued me a new 7290 with Cingular/ATT service. Data only. Everything is working fine. But I started noticing my work computer speakers would buzz every few minutes. I was wondering why it started to do that. Then at home, my computer speakers there would buzz intermittently. Back at work and I'm standing in a co-worker's cubicle with my 7290 in my jeans pocket. Her computer speakers started buzzing! Then in another co-worker's office, her boombox, which was turned off, started buzzing? What the hey!?
I understand there's some sort of GPRS transmission causing this. But it's really annoying. My IT person said she can exchange it. Should I try that? Is there some fix I can do? I've searched this forum, but haven't found anything.
Thanks!
Nobbie
|
Offline
|
|
05-04-2005, 05:29 PM
|
#2
|
Talking BlackBerry Encyclopedia
Join Date: Mar 2005
Location: Texas
Model: 8900
Carrier: AT&T/Cingular
Posts: 416
|
Shhhh...that's big brother...they can read your thoughts...be very very quiet!
just teasing! mine does the same thing!
__________________
7290>8700>8310>8900
|
Offline
|
|
05-04-2005, 06:31 PM
|
#3
|
Retired BBF Moderator
Join Date: Aug 2004
Model: N/A
Carrier: N/A
Posts: 3,309
|
It's the cellular radio waves crossing over, same thing happens if your on a LAN line phone, this happens more so with Blackberry as the network is always pushing to the device.
|
Offline
|
|
05-05-2005, 12:37 AM
|
#4
|
Thumbs Must Hurt
Join Date: Aug 2004
Location: 92658
Model: 7290, 7280
Posts: 73
|
welcome to the GSM mosquito. It is normal.
.
|
Offline
|
|
05-05-2005, 02:15 AM
|
#5
|
Talking BlackBerry Encyclopedia
Join Date: Dec 2004
Model: 9100
Carrier: TMO
Posts: 426
|
Wirelessly posted (Nokia 6310i: Nokia6310i/1.0 (7.00) Profile/MIDP-1.0 Configuration/CLDC-1.0)
This usually only happens with unshielded speakers such as phones, clock and car radios, and cheap (computer) speakers.
|
Offline
|
|
05-05-2005, 08:38 PM
|
#6
|
BlackBerry Mensa
Join Date: Jan 2005
Location: Houston
Model: 8310
Carrier: at&t
Posts: 7,741
|
It's definitely much more pronouced on a 7290 with Cingular. I have a Cingular-branded 7290 with a T-Mobile SIM and it isn't anywhere near as bad as the same device with a Cingular SIM in it. I'm guessing it's probably the 850MHz transmissions since T-Mobile doesn't use that band.
|
Offline
|
|
05-05-2005, 09:36 PM
|
#7
|
Thumbs Must Hurt
Join Date: Apr 2005
Location: MO
Model: BOLD
Carrier: at&t
Posts: 164
|
I get the same thing with my 7520, i know everytime BBToday refreshes because of it, Also it does the same thing in my car.
__________________
PIN: 4011A3B5
A luxury once sampled quickly becomes a necessity...
Frequently Wrong But Never In Doubt
|
Offline
|
|
05-06-2005, 07:06 AM
|
#8
|
Talking BlackBerry Encyclopedia
Join Date: Jan 2005
Location: Connecticut
Model: 8330
Carrier: Verizon
Posts: 213
|
FYI, here's what I got from my RIM engineer last October, regarding this issue:
This is a known issue and actually is common on many GPRS devices. This will be fixed in 2005. See below for details:
RIM currently has Engineering resources in the audio, RF and certification groups that are working toward meeting new FCC requirements applicable to mobile phones under the Hearing Aid Compatibility Act of 1988 that come into effect in mid 2005. One element of this effort is to reduce the RF interference on all of our products, which works toward alleviating the user experience described in this letter.
__________________
Talldog
|
Offline
|
|
05-06-2005, 09:02 AM
|
#9
|
No longer Registered.
Join Date: Mar 2005
Location: Atlanta
Model: 8330
OS: 4.5.0.138
PIN: 31a6c9c9
Carrier: Verizon BIS
Posts: 13,962
|
It does it on my 7520 and every other nextel device I have ever owned. I have begun watching it closely I can tell when its gonna ring or when its a email or when its just refreshing. My kids think I am magic because I say my phone is fixing to ring and then it rings.
|
Offline
|
|
05-06-2005, 03:40 PM
|
#10
|
BlackBerry Extraordinaire
Join Date: Oct 2004
Location: Fort Worth, Texas
Model: 8220
PIN: FFFFFFFF
Carrier: T-Mobile
Posts: 1,734
|
Very useful while driving. I usually listen to an AM talk station on the way home from work and I have a 3 second lead on all phone calls.
__________________
Stonent
Prior: BES: 7510, 7520, 7290, 7230, 7130, 8220 (No Data Plan), Droid Eris
Post your question on the forum, don't PM me.
|
Offline
|
|
05-06-2005, 07:09 PM
|
#11
|
Thumbs Must Hurt
Join Date: Aug 2004
Location: 92658
Model: 7290, 7280
Posts: 73
|
Quote:
Originally Posted by stonent
Very useful while driving. I usually listen to an AM talk station on the way home from work and I have a 3 second lead on all phone calls.
|
gotta love that, being able to tell when you phone is going to ring before it actually rings!
.
|
Offline
|
|
05-09-2005, 01:28 PM
|
#12
|
Talking BlackBerry Encyclopedia
Join Date: Feb 2005
Model: 7280
Carrier: cingular, no wait, AT&T
Posts: 300
|
If the thing is powerful enough to cause speakers to buzz, just imagine what it is doing when its in your pocket... right next to...
As engineers call it, FLK: Funny Lookin' Kids.
|
Offline
|
|
05-10-2005, 11:13 AM
|
#13
|
BlackBerry Extraordinaire
Join Date: Oct 2004
Location: Fort Worth, Texas
Model: 8220
PIN: FFFFFFFF
Carrier: T-Mobile
Posts: 1,734
|
I'd worry more about 1.8Ghz and 1.9GHz GSM phones. Microwave ovens operate in the gigahertz range. Though with a lot more watts.
__________________
Stonent
Prior: BES: 7510, 7520, 7290, 7230, 7130, 8220 (No Data Plan), Droid Eris
Post your question on the forum, don't PM me.
|
Offline
|
|
05-11-2005, 05:18 PM
|
#14
|
CrackBerry Addict
Join Date: Feb 2005
Model: 9900
Carrier: ATT
Posts: 603
|
same thing with my 7290 and like others said from the way it causes the disturbance in my speakers i can tell if im going to get an email or if its just a refresh... a little annoying but i got used to it.. having verizon cdma phones i never had this problem in the past but all my nextel buddies have the same issue as my BB
|
Offline
|
|
05-11-2005, 07:57 PM
|
#15
|
Talking BlackBerry Encyclopedia
Join Date: Apr 2005
Location: RDU
Model: 9810
OS: 7.0.0.261
Carrier: ATT
Posts: 343
|
My 7100g does it too. It's worse than my previous GSM devices, but not by much.
__________________
BIS (ATT)
|
Offline
|
|
05-12-2005, 10:57 AM
|
#16
|
New Member
Join Date: May 2005
Model: 7280
Posts: 1
|
Should we be concerned?
I have a 7280 on cingular and have this problem as well. Actually it is pretty serious -- I have a under-the-cabinet CD player/radio in my kitchen, and the buzzing would come out of that thing pretty loud as long as I am in the kitchen (6 feet away). I tried to make a call near the unit (6 inches) and the noise became thunderous.
I used to have an old b/w Blackberry with t-modile and did not notice this interference issue at all. Also with my other t-mobile phone, I'll have to put the phone right next to the radio speaker to get any interference (which is faint). So this one (7280 and/or Cingular) is definitely a lot more powerful !
I have a few related questions:
[1] Do you people who have the problem have it as seriously (i.e. causing buzzing even several feet away from the speaker)? I want to know if mine is worse than normal (in which case I might want a replacement).
[2] Is the buzzing noise coming out of the affected speaker *amplified* or not? I would assume so (otherwise this is REALLY powerful and carrying it on the belt seems dangerous), but what about the boombox that is off, and the computer speakers?
[3] How do I know the frequency the BB is using for communication?
Thanks,
snehne
|
Offline
|
|
05-12-2005, 12:25 PM
|
#17
|
New Member
Join Date: Apr 2005
Posts: 12
|
Well, my company's IT person in charge of Blackberries was told by RIM that it should do that. Hah! They replaced it and now the new one is doing the exact same thing. Oh well. Hopefully, there'll be a fix this year as previously mentioned. Ugh.
|
Offline
|
|
05-12-2005, 12:28 PM
|
#18
|
New Member
Join Date: Apr 2005
Posts: 12
|
Hey, I noticed that if I place my hand between the 7290 and my speakers, the buzzing stops! Hmmm...This while still receiving signals. I met a guy on the plane that had a Treo 600. His does the same thing and he places it in the bag that it was shipped in. He says it works great. Just looks ugly.
So, my question is: Is there a nice case out there that cuts this buzzing out? Something slim that doesn't add a lot of bulk and perhaps protects the screen from my keys in my pocket?
|
Offline
|
|
05-18-2005, 10:33 PM
|
#19
|
BlackBerry Extraordinaire
Join Date: May 2005
Location: Waterloo: Home of RIM
Model: PlayB
Carrier: Bell Mobility
Posts: 1,008
|
The newer GSM berries are PC4---that's up to 2 watts of RF power at 800MHz. Ouch! More than double the RF output of CDMA...
|
Offline
|
|
05-19-2005, 08:04 AM
|
#20
|
BlackBerry Mensa
Join Date: Jan 2005
Location: Houston
Model: 8310
Carrier: at&t
Posts: 7,741
|
Quote:
Originally Posted by snehne
I have a 7280 on cingular and have this problem as well. Actually it is pretty serious -- I have a under-the-cabinet CD player/radio in my kitchen, and the buzzing would come out of that thing pretty loud as long as I am in the kitchen (6 feet away). I tried to make a call near the unit (6 inches) and the noise became thunderous.
I used to have an old b/w Blackberry with t-modile and did not notice this interference issue at all. Also with my other t-mobile phone, I'll have to put the phone right next to the radio speaker to get any interference (which is faint). So this one (7280 and/or Cingular) is definitely a lot more powerful !
|
This is definitely normal for the Cingular 7290's. Possibly other models but we only have 7290's from Cingular. Ours cause interference with computer speakers, phones, radios, and the audio systems in our conference rooms. The latter is a real issue as mostly our executives have the Cingular 7290's. It really doesn't matter if a speaker is powered or not and the interference is easily caused at distances of six feet and more.
As I said, the same Cingular 7290's when equipped with T-Mobile SIM's do not cause interference until the device is right next to a speaker. None of our T-Mobile 6230's or 7230's cause interference until placed inches away from a speaker. We have some Nextel Blackberries as well but they are only used in our eastern division as Nextel provides better coverage out there but I have no first hand experience with them.
Yes, all GSM phones cause interference but not all to the same degree. Your carrier -- or, more accurately, the frequencies used by your carrier since T-Mo doesn't use 850MHz -- can make a difference as to how bad the interference is as well.
Last edited by takeshi; 05-19-2005 at 08:10 AM..
|
Offline
|
|
|
|