scanning a scanner
- Thread starter tonguetie
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What you want is something like this.
http://www.gpscity.ca/item-gps-city-fm-transmitter-and-power/audiofmant.htm
It's a miniature FM transmitter, which can be set to one of four frequencies in the FM broadcast band. I picked up one to use in my car, for transmitting audio from my carputer to the AM/FM/cassette that has no line inputs. If you power it by the power-point adapter, you'll never have to replace the batteries - but it can be run with 2 AAA's as well. I'm sorry, I don't know the run-down time of the batteries - I always use mine with the 12V adapter.
Unfortunately it looks like GPS City is out of them. I bet you can find them in a hundred other places on or off the net. The product name is "iRock" if that helps your search.
So, all you would need in your household is an FM radio/stereo somewhere where you want to hear the scanner. The range of the device is about 100-300 feet. It also helps if there are no FM stations "near" the frequency you pick (you have 4 choices).
Sorry if I ran away with the subject here.
Good luck with this, though!
http://www.gpscity.ca/item-gps-city-fm-transmitter-and-power/audiofmant.htm
It's a miniature FM transmitter, which can be set to one of four frequencies in the FM broadcast band. I picked up one to use in my car, for transmitting audio from my carputer to the AM/FM/cassette that has no line inputs. If you power it by the power-point adapter, you'll never have to replace the batteries - but it can be run with 2 AAA's as well. I'm sorry, I don't know the run-down time of the batteries - I always use mine with the 12V adapter.
Unfortunately it looks like GPS City is out of them. I bet you can find them in a hundred other places on or off the net. The product name is "iRock" if that helps your search.
So, all you would need in your household is an FM radio/stereo somewhere where you want to hear the scanner. The range of the device is about 100-300 feet. It also helps if there are no FM stations "near" the frequency you pick (you have 4 choices).
Sorry if I ran away with the subject here.
Good luck with this, though!
I just use the intercom feature on my Uniden cordless phone http://www.uniden.com/productpop/00_productpop.cfm?prd_code=DCT648-3
Altpensacola
Member
Scanning his scanner scanning
Cool , So then I can hear his scanner in my scanner while monitoring
the baby monitor or cordless! That is if he lives near me.
So he can't scan a scanner but the 3rd party (me) could.
Are yall still following this?
Can you vacumn a vacumn cleaner with a vacumn cleaner? That what I want to know!
I'm not even stoned!
Cool , So then I can hear his scanner in my scanner while monitoring
the baby monitor or cordless! That is if he lives near me.
So he can't scan a scanner but the 3rd party (me) could.
Are yall still following this?
Can you vacumn a vacumn cleaner with a vacumn cleaner? That what I want to know!
I'm not even stoned!
duke_nemmerle
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Re: Scanning his scanner scanning
I'm sorry to go OT, but this is one of the funniest things I've ever read
Altpensacola said:
I'm sorry to go OT, but this is one of the funniest things I've ever read
EMSdtw
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Re: Scanning his scanner scanning
If the little tiny dust particles on one vacuum cleaner are the equivalent of RF radiation from RF components within a scanner then, "yes". You can pick up what you're looking for with a highly sensitive receiver (scanner), but you'd probably have to be in an RF sterile environment similar to the one where the FCC tests and certifies consumer products in.
Altpensacola said:
If the little tiny dust particles on one vacuum cleaner are the equivalent of RF radiation from RF components within a scanner then, "yes". You can pick up what you're looking for with a highly sensitive receiver (scanner), but you'd probably have to be in an RF sterile environment similar to the one where the FCC tests and certifies consumer products in.
Scan-Denver
Member
EMS12 said:How much could a scanner scan if a scanner could scan a scanner?
:lol: :lol: :lol:
tonguetie said:
You can - to a point. You could pick up the local oscillator frequency of another scanner on a scanner, but it wouldn't contain the audio the other scanner is receiving. How you find the local oscillator frequency is you subtract the I.F. frequency (typically 10.7 or 10.8 MHz) from the received frequency. You you should find a carrier on the LO frequency whenever the first scanner is tuned to the main frequency.
I used this method (I think I described it corre4ctly) to find out what the neighbors are listening to. 8)
This was also a problem for a ham group who had a repeater input on 144.810 MHz in an area in which the State PD used 155.505 MHz. They had several scanners LOs 5 kHz away from their input (155.505 - 10.7 = 144.805). I think they 'solved' the problem by buying the people using the offending scanners new ones that had a 10.8 MHz I.F. to monirot the State Police, hence moving the LO to 144.705 MHz - far enough away to not cause them a problem.
So, you see, your scanner DOES 'transmit', albeit a weak signal. This is the reason airlines claim that scanners will interfere with aircraft operations. If you happen to be listening to the 'right' frequency, you could jam their communications, or at least interfere with what they are trying to receive.
Now a PC - that will generate a signal on any number of frequencies, but that's another thread...
Joe M.
LordJ
Member
Here's your solution..
Just buy another Radio... no excuse is too lame, just do it.
Just buy another Radio...
no excuse is too lame, just do it.But the radiated output from a scanneris no more than a few feet.
And if i read this guys question correctly he is asking if there is a way he can eavesdrop on his neighboors scanner.
This right?
And if i read this guys question correctly he is asking if there is a way he can eavesdrop on his neighboors scanner.
This right?
flyingwolf said:
I've heard neighbor's scanners many hundred feet away. The closest one in the ham case was over a half a mile away. It can be quite a strong signal the LO puts out.
Read the original post again - he clearly wants to 'eavesdrop' on his own scanner.
Joe M.
Learn something new everyday I guess.
flyingwolf said:
I should add that newer scanners may not have as strong an LO as older ones. These were 70s/80s scanners I dealt with.
That said, I listened to a business frequency (repeater input) at a tower site and heard dozens - maybe HUNDREDS of scanner LOs on that frequency about 10 years ago. Of course, the antenna was 400 feet in the air and was line-of-sight to many thousands of houses. It rendered that frequency unusable at that site. The closest house was about a mile away. I'm sure many of those were newer scanners.
Joe M.
Try using a baby monitor, you can probably find one cheap at a garage sale. I'm sure it wouldn't be too difficult to wire the audio out on the scanner directly to the mic input of the monitor base.
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