Infiltration
THEORY
Ethics
Observations
 
PRACTICE
Abandoned Sites
Boats
Churches
Drains/Catacombs
Hotels/Hospitals
Transit Tunnels
Utility Tunnels
Various
 
RESOURCES
Exploration Timeline
Infilnews
Infilspeak Dictionary
Usufruct Blog
Worldwide Links
Infiltration Forums home | search | login | register

Page: 1 2 > 
Infiltration Forums > Archived UE Tutorials, Lessons, and Useful Info > cellphones in drains (Viewed 980 times)
niwa 






Send Private Message | Send Email
cellphones in drains
< on 4/29/2005 5:50 AM >
Posted on Forum: Infiltration Forums
 
I know this may sound like a dumb question, but is it possible to get a signal inside a drain with a cellphone?

My brother in law has a manhole cover on his front lawn - we checked it out and it goes down to a storm drain. we're new to exploring so we thought we'd go down and check it out.


PAWolf 


Not from Pennsylvania

location:
KCMO
Gender: Male


We haven't located us yet.

Send Private Message | Send Email | Add to ICQ | AIM Message | kcurbex
Re: cellphones in drains
<Reply # 1 on 4/29/2005 6:27 AM >
Posted on Forum: UER Forum
 
Ya it's possible but don't count on it for safety. Why don't you go down in the drain and find out?

Make Beer, Not War.
kittykatgurl_2001 


location:
montreal,quebec
Gender: Female




Send Private Message | Send Email | Yahoo! IM
Re: cellphones in drains
<Reply # 2 on 4/29/2005 6:36 AM >
Posted on Forum: UER Forum
 
you may get a signal but it all depends on where you are and how deep the drain goes.

Random 


location:
Richmond, Virginia
Gender: Male


Partially Retired

Send Private Message | Send Email | AIM Message
Re: cellphones in drains
<Reply # 3 on 4/30/2005 4:22 AM >
Posted on Forum: UER Forum
 
My cellphone never seems to lose signal, even in the deepest drains, yet my UE partner's phone won't work right at an entrance.

So there's a chance it will work.

Kakesu 


location:
England. Fun!
Gender: Male


printf("shiver in eternal darkness/n");

Send Private Message | Send Email | playing.in.dead.spaces
Re: cellphones in drains
<Reply # 4 on 4/30/2005 5:19 AM >
Posted on Forum: UER Forum
 
What type of mobile do you have Random?

statik 


location:
colorado


There has got to be more to life than just being really, really, really, ridiculously good-looking.

Send Private Message | Send Email | Statik Records
Re: cellphones in drains
<Reply # 5 on 4/30/2005 9:39 AM >
Posted on Forum: UER Forum
 
It's just a radio. A simple two-way radio.
Operates at 800MHz or 1900MHz, depending on your carrier.

In other words: don't trust it to work absolutely everywhere, but if you have a decent transmitter, and are close enough to a tower, you're okay.

None more black..
Explorer Zero 






Send Private Message | Send Email | 
Re: cellphones in drains
<Reply # 6 on 4/30/2005 5:12 PM >
Posted on Forum: UER Forum
 
try this: easy to build what ham radio guys call a passive radiator

just an antennae tuned to the length of the frequency your cell service operates on mounted AND grounded at the entrance of the tunnel (does not connect to your phone)

some cities use this to assist commercial broadcast reception in highway tunnels
been around since the 1960s it will also work on microwave (cell phone) too

RF signals in VHF UHF and above bounce around pretty good but get absorbed easily and wont penetrate ground and concrete, digital cell phones typically running less than 0.3 of a watt wont penetrate much of anything you'll need to get the signal to bounce or radiate into the hole somehow

sarahh 


location:
ohio
Gender: Female




Send Private Message | Send Email | AIM Message
Re: cellphones in drains
<Reply # 7 on 5/2/2005 11:49 PM >
Posted on Forum: UER Forum
 
it mostly depends on your service provider
and you probably shouldnt count on that as your main line to the rest of the world.
the wonderful world of walkie-talkies come in handy here.

edit: left out a word making me sound slightly retarded.
[last edit 5/3/2005 2:30 AM by sarahh - edited 1 times]

The great masses of the people... will more easily fall victims to a great lie than to a small one. -Adolf Hilter
ofberenonehand 


location:
Minn-e-snow-ta


"Where now is Boromir the Fair? He tarries and I grieve."

Send Private Message | Send Email
Re: cellphones in drains
<Reply # 8 on 5/3/2005 4:53 PM >
Posted on Forum: UER Forum
 
no.

"That's What Government Is For; To Get In A Man's Way" -Mal
Slyv 


location:
Belgium, kingdom of UE
Gender: Male




Send Private Message | Send Email | Forbidden Places: yet another Urban Exploration website!
Re: cellphones in drains
<Reply # 9 on 5/4/2005 7:59 AM >
Posted on Forum: UER Forum
 
i used to explore the Paris underground quarries and catacombs when I lived in Paris
around 30m under the surface, no cell phone signal of course... except when you are able to find a ventilation shaft. it does not systematically work, sometimes ou have to climb some rungs if any.

--
> Check my book ! <
Random 


location:
Richmond, Virginia
Gender: Male


Partially Retired

Send Private Message | Send Email | AIM Message
Re: cellphones in drains
<Reply # 10 on 5/6/2005 3:44 AM >
Posted on Forum: UER Forum
 
Here's a semi-interesting (read: mostly boring) cellphone in a drain experience. I sold my truck today while I was draining. I was about an hour into a drain when my phone went off. It was on vibrate, but the thing still scared the crap out of me.

blue 






Send Private Message | Send Email
Re: cellphones in drains
<Reply # 11 on 5/9/2005 8:04 PM >
Posted on Forum: UER Forum
 
depends where you are and what phone service you have..
my friend and i went draining, and about 50 feet into the drain, his phone lost service. although there was a hill above the drain, so the further we went in the less service it had. he had to go out to the opening to make a call.

McBain 


location:
Kingston Ontario
Gender: Male


"My Ferrari! I had to do awful things to pay for her."

Send Private Message | Send Email | Add to ICQ
Re: cellphones in drains
<Reply # 12 on 5/10/2005 4:01 PM >
Posted on Forum: UER Forum
 
It all depends on what frequency your cell phone works at.

I know with most of the GSM phones,(ex. T-Mobile) especially at the 1900 Mhz level, they have a harder time penetrating through bigger buildings, structures, and anything that may block a signal. A GSM phone that works on 850 Mhz, can penetrate though many of the places that the 1900 Mhz phones cannot. For draining, I would think that the FRS might be the best way to go..

McBain

My new film is a mixture of action and comedy. It's called McBain: Let's Get Silly." "The film is just me in front of a brick wall for an hour and a half. It cost eighty million dollars."
grit1 


location:
University Campus - Minneapolis, MN
Gender: Male


Got Shear Line?

Send Private Message | Send Email | AIM Message
Re: cellphones in drains
<Reply # 13 on 5/11/2005 8:07 PM >
Posted on Forum: UER Forum
 
Thus far I've had good luck with Nextel working underground to an extent ... basements great, steam tunnels of the shallow variety sometimes...it beats PCS phones though, at least where I live. ~Grit.

brian_4116 


location:
Minneapolis, MN
Gender: Male




Send Private Message | Send Email | Yahoo! IM | AIM Message
Re: cellphones in drains
<Reply # 14 on 5/17/2005 1:57 AM >
Posted on Forum: UER Forum
 
Tri-mode CDMA phones will have much better reception in a drain than any GSM phone will, although nothing will work if you are very deep. A worldband phone would be a best bet, but they are expensive. Keep your phone in a plastic bag though, I know someone who soaked theirs.

nobody 


location:
VANCOUVER B.C.
Gender: Male


5:55 is a state of mind

Send Private Message | Send Email
Re: cellphones in drains
<Reply # 15 on 5/20/2005 1:53 AM >
Posted on Forum:
 
What about sattellite phones? Or was that covered?

Operating Entirely With Bad Intentions
McBain 


location:
Kingston Ontario
Gender: Male


"My Ferrari! I had to do awful things to pay for her."

Send Private Message | Send Email | Add to ICQ
Re: cellphones in drains
<Reply # 16 on 5/20/2005 2:07 AM >
Posted on Forum: UER Forum
 
Posted by nobody
What about sattellite phones? Or was that covered?


Satellite phones have coverage almost anywhere. But Satellite phones are expensive, I mean really expensive. I was checking pricing on phones, and on calling plans and there is absolutely no way I would be purchasing a satellite phone, unless the employer wants to pay for it. $49.95 for 30 mins of Voice per month? $1000 for a phone.... No thanks..

McBain

My new film is a mixture of action and comedy. It's called McBain: Let's Get Silly." "The film is just me in front of a brick wall for an hour and a half. It cost eighty million dollars."
Servo 






Send Private Message | Send Email
Re: cellphones in drains
<Reply # 17 on 5/20/2005 3:09 AM >
Posted on Forum: UER Forum
 
Posted by nobody
What about sattellite phones? Or was that covered?

... adding to what McBain said, you would still have the same problem as you would with a normal cell phone, that the signal can't penetrate through the pipe and ground. This is especially true with metal corrugated pipe, which acts as a Faraday cage, blocking EM radiation (such as cell phone signals) almost completely.

nobody 


location:
VANCOUVER B.C.
Gender: Male


5:55 is a state of mind

Send Private Message | Send Email
Re: cellphones in drains
<Reply # 18 on 5/20/2005 4:43 PM >
Posted on Forum:
 
Could you explain Faraday Cage ?

Operating Entirely With Bad Intentions
Servo 






Send Private Message | Send Email
Re: cellphones in drains
<Reply # 19 on 5/20/2005 4:59 PM >
Posted on Forum: UER Forum
 
http://en.wikipedi.../wiki/Faraday_cage

Infiltration Forums > Archived UE Tutorials, Lessons, and Useful Info > cellphones in drains (Viewed 980 times)
Page: 1 2 > 

Powered by AvBoard AvBoard version 1.5 alpha
Page Generated In: 62 ms