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Digital Spread Spetrum Phone Mod? - RF Cafe Forums
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Platonic
Post subject: Digital Spread Spetrum Phone Mod?
Unread
postPosted: Mon Mar 28, 2005 7:20 pm
Offline
Lieutenant
Joined: Mon Mar 28, 2005 7:12 pm
Posts: 4
I've got two 900
MHz DSS (Freq. Hopping) cordless phones that I want to turn into short
range radios. What I'd like to do is mod each one to put out at least
5 watts. The base of each phone would function as the transmitter while
the paired handset would be the receiver.
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Platonic
Post subject:
Unread postPosted: Wed Mar 30,
2005 12:11 am
Offline
Lieutenant
Joined: Mon Mar 28, 2005
7:12 pm
Posts: 4
I think I need to ask a more specific question:
Whar parts need to be replaced on the board to up the power to 5W? Where
can I get a schematic for it or to modify it?
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Reality
Post subject:
Unread postPosted: Wed Mar 30,
2005 8:47 am
I hate to throw cold water on your idea here, but
you do realize that the modification you are proposing is illegal per
FCC rules, right? The cordless phone operate under FCC Part 15 unlicensed
radiator regulations.
:(
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Guest
Post subject:
Unread postPosted: Wed Mar 30, 2005 4:25 pm
Reality wrote:
I hate to throw cold water on your idea here,
but you do realize that the modification you are proposing is illegal
per FCC rules, right? The cordless phone operate under FCC Part 15 unlicensed
radiator regulations.
:(
Even if I'm a licensed
amateur radio operator and the phone is going to be used in the 902-928
MHz range only?
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kpainter
Post subject:
Unread postPosted: Wed Mar 30, 2005 6:03 pm
Offline
Colonel
User avatar
Joined: Wed Aug 20, 2003 11:47 am
Posts: 47
Location: Santa Barbara, CA
Anonymous wrote:
Reality wrote:
I hate to throw cold water on your idea here, but you do realize that
the modification you are proposing is illegal per FCC rules, right?
The cordless phone operate under FCC Part 15 unlicensed radiator regulations.
:(
Even if I'm a licensed amateur radio operator
and the phone is going to be used in the 902-928 MHz range only?
Yep, even if...
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Guest
Post subject:
Unread postPosted: Wed Mar 30, 2005 9:49 pm
Hummm, well I can build and operate experimental ham equipment of
any kind as long as it doesn't interfere with other services so I don't
understand how Part 15 devices are different. Just because they're certified
by the FCC it makes them unmodifiable under any circumstances?
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Platonic
Post subject:
Unread postPosted:
Wed Mar 30, 2005 9:52 pm
Offline
Lieutenant
Joined: Mon
Mar 28, 2005 7:12 pm
Posts: 4
That was me I forgot to sign on!
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Guest
Post subject:
Unread postPosted:
Wed Mar 30, 2005 10:47 pm
I take back what I said earlier. I
shouldn't have originally phrased my response in a form of a question.
Because as an amateur radio operator I should know that it's perfectly
legal to do so. I was trying to be polite, but you took that to thinking
that I'm bluffing. You forgot to take into consideration that I might
be a new ham and I'm not aware of all these little laws and what not.
The last thing we all need is another guy operating an RF transmitter
illegally, I agree. But they're other ways to help people out than to
lie to them about the legality of modding something just to brush them
off because you think they were born yesterday.
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kpainter
Post subject:
Unread postPosted: Thu Mar 31,
2005 12:51 pm
Offline
Colonel
User avatar
Joined: Wed
Aug 20, 2003 11:47 am
Posts: 47
Location: Santa Barbara, CA
Anonymous wrote:
I take back what I said earlier. I shouldn't
have originally phrased my response in a form of a question. Because
as an amateur radio operator I should know that it's perfectly legal
to do so. I was trying to be polite, but you took that to thinking that
I'm bluffing. You forgot to take into consideration that I might be
a new ham and I'm not aware of all these little laws and what not. The
last thing we all need is another guy operating an RF transmitter illegally,
I agree. But they're other ways to help people out than to lie to them
about the legality of modding something just to brush them off because
you think they were born yesterday.
You make absolutely no
sense. If you mod a phone to pound out 5 Watts in a band THAT IS REGULATED
by Part 15, HOW are you going to know if you are or are not interferring
with some one else? You are moving the burden of proof to the person
you would be interferring with. The laws are in place specifically to
cover people like you. But see, hams are not covered by FCC regulations,
right?
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Guest
Post subject:
Unread postPosted: Thu Mar 31, 2005 3:49 pm
According to the
HAM radio operators they can transmitt in any band. Let them try and
transmit in the commercial FM and AM radio band and see how long it
would take before someone comes knocking on their door. The existing
cordless phones have low power for reason, NOT TO INTERFERE WITH YOUR
NEIGHBOR.
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Guest
Post subject:
Unread
postPosted: Thu Mar 31, 2005 3:53 pm
The last two posts make
absolutely no sense.
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Guest
Post subject:
Unread postPosted: Thu Mar 31, 2005 3:55 pm
kpainter wrote:
Anonymous wrote:
I take back what I said earlier. I shouldn't have
originally phrased my response in a form of a question. Because as an
amateur radio operator I should know that it's perfectly legal to do
so. I was trying to be polite, but you took that to thinking that I'm
bluffing. You forgot to take into consideration that I might be a new
ham and I'm not aware of all these little laws and what not. The last
thing we all need is another guy operating an RF transmitter illegally,
I agree. But they're other ways to help people out than to lie to them
about the legality of modding something just to brush them off because
you think they were born yesterday.
You make absolutely no
sense. If you mod a phone to pound out 5 Watts in a band THAT IS REGULATED
by Part 15, HOW are you going to know if you are or are not interferring
with some one else? You are moving the burden of proof to the person
you would be interferring with. The laws are in place specifically to
cover people like you. But see, hams are not covered by FCC regulations,
right?
It's regulated by part 15, but it's also regulated
by part 97. In a ham’s case it supercedes part 15. It's a shared band,
remember?
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Guest
Post subject:
Unread
postPosted: Thu Mar 31, 2005 3:57 pm
Anonymous wrote:
kpainter
wrote:
Anonymous wrote:
I take back what I said earlier. I shouldn't
have originally phrased my response in a form of a question. Because
as an amateur radio operator I should know that it's perfectly legal
to do so. I was trying to be polite, but you took that to thinking that
I'm bluffing. You forgot to take into consideration that I might be
a new ham and I'm not aware of all these little laws and what not. The
last thing we all need is another guy operating an RF transmitter illegally,
I agree. But they're other ways to help people out than to lie to them
about the legality of modding something just to brush them off because
you think they were born yesterday.
You make absolutely no
sense. If you mod a phone to pound out 5 Watts in a band THAT IS REGULATED
by Part 15, HOW are you going to know if you are or are not interferring
with some one else? You are moving the burden of proof to the person
you would be interferring with. The laws are in place specifically to
cover people like you. But see, hams are not covered by FCC regulations,
right?
It's regulated by part 15, but it's also regulated
by part 97. In a ham’s case it supercedes part 15. It's a shared band,
remember?
Someone can buy you clue if you can't afford one!
Top
Guest
Post subject:
Unread postPosted:
Thu Mar 31, 2005 3:58 pm
Anonymous wrote:
Anonymous wrote:
kpainter wrote:
Anonymous wrote:
I take back what I said earlier.
I shouldn't have originally phrased my response in a form of a question.
Because as an amateur radio operator I should know that it's perfectly
legal to do so. I was trying to be polite, but you took that to thinking
that I'm bluffing. You forgot to take into consideration that I might
be a new ham and I'm not aware of all these little laws and what not.
The last thing we all need is another guy operating an RF transmitter
illegally, I agree. But they're other ways to help people out than to
lie to them about the legality of modding something just to brush them
off because you think they were born yesterday.
You make
absolutely no sense. If you mod a phone to pound out 5 Watts in a band
THAT IS REGULATED by Part 15, HOW are you going to know if you are or
are not interferring with some one else? You are moving the burden of
proof to the person you would be interferring with. The laws are in
place specifically to cover people like you. But see, hams are not covered
by FCC regulations, right?
It's regulated by part 15,
but it's also regulated by part 97. In a ham’s case it supercedes part
15. It's a shared band, remember?
Someone can buy you clue
if you can't afford one!
Double posts are nasty. I quoted
myself in the last post.
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Kirt Blattenberger
Post subject:
Unread postPosted: Thu Mar 31, 2005 4:55 pm
Offline
Site Admin
User avatar
Joined: Sun Aug 03, 2003
2:02 pm
Posts: 308
Location: Erie, PA
I am no expert on the
FCC, but I do believe the original poster is correct that HAM operators
operating under Part 97 rules do trumph Part 15 unlicensed operators.
Although malicious intentional interference could probably be prosecuted,
there are multitudes of articles on the ARRL website and all over the
Internet that discuss this issue. Here is a useful one to consider:
http://www.qrpis.org/~k3ng/ham_wisp.html
The tone of the
thread could have gone in a more amicable direction if the original
poster had stated up front that he is a HAM.
- Kirt Blattenberger
:smt024
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kpainter
Post subject:
Unread postPosted: Thu Mar 31, 2005 8:44 pm
Offline
Colonel
User avatar
Joined: Wed Aug 20, 2003 11:47 am
Posts: 47
Location: Santa Barbara, CA
It would appear that the Ham operator's
use of the spectrum does indeed superceed the public's use of part 15
devices. I particularly enjoyed the suggestion of what to do if you
run into an amatuer radio operator who is jamming your cordless phone:
"Q: How can I avoid problems with Amateurs in my area ?
...
Hams love free Internet service and surplus gear, working or not.
Use these tools when dealing with interference issues with hams.
"
Nice. :roll: I didn't know that bridery was an ARRL accepted
method of conflict resolution - I guess so.
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Platonic
Post subject:
Unread postPosted: Fri Apr 01,
2005 10:52 pm
Offline
Lieutenant
Joined: Mon Mar 28, 2005
7:12 pm
Posts: 4
Kirt Blattenberger wrote:
I am no expert
on the FCC, but I do believe the original poster is correct that HAM
operators operating under Part 97 rules do trumph Part 15 unlicensed
operators. Although malicious intentional interference could probably
be prosecuted, there are multitudes of articles on the ARRL website
and all over the Internet that discuss this issue. Here is a useful
one to consider:
http://www.qrpis.org/~k3ng/ham_wisp.html
The tone of the thread could have gone in a more amicable direction
if the original poster had stated up front that he is a HAM.
- Kirt Blattenberger :smt024
You're right about the
tone of the thread. But, I was under the impression that people on these
forums were here to trade technical information only. I'll be sure to
state the fact I'm licensed when it warrants doing so.
Posted 11/12/2012
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