What is the range on a listening device?
137992
Depends on the device. Some, several miles.
396626
Radio Detection And Ranging
1012557
maximum effective range at a point target is 550 meters.  at an area target is 800 meters.  Maximum range is around 3500 meters (meaning you can hit something that far out, but it's a big crapshoot).
1140798
go to: radioisla1320.com\nclick to hear live
83114
This varies with age.\n\nThe normal range of hearing for a healthy young person is 20 to 20,000 Hz; hearing deteriorates with age and with exposure to unsafe volume levels.\n\nThe hearing range of humans gets worse with age. People lose the ability to hear sounds of high frequency as they get older. The highest frequency that a normal middle-aged adult can hear is only 12-14 kilohertz. Also, the hearing range for men worsens more quickly than the hearing range for women. This means that women will have the ability to hear notes of higher pitch than men of the same age do.
14994
Check out this site here It gives step by step directions. He says it will give you a 3-5km range. That should give you roughly 1.5 miles or so.\n\nhttp://www.usbwifi.orcon.net.nz/\n\nBy the way it isn't omnidirectional, so you have to have a pretty good line of sight between antenna 1 and antenna 2.
556687
2) Use stop wave:\nPlace a speaker of known, variable frequency close to a micro, the micro is connected to a microamperemeter.\nPlace that in the top of a long glass tube, slowly fill the tube with water until the the microamperemeter show a maximum. Continue filling the tube with water to get the next maximum. The distance between the two consecutive maximums is half the wavelength.\nSpeed = wavelength x frequency.\nRepeat the experiment several times and get the averange. That should be close to actual value.
257925
It is a wireless technology with a range of about 30 feet.  It uses FHSS, which is Frequency Hopping Spread Spectrum technology.  FHSS means that it changes the frequency 1500 times per second, so that it is difficult to intercept and listen in.  Many newer devices come with bluetooth built in, and it allows you to more easily connect to a Wi-Fi hotspot when you are at Starbucks or Borders.
885696
Earplugs. Seriously, they are lifesavers. Get the ones that have 32 decibels of attenuation. You'll never be bothered again.
1106438
buy a FM broadcasting set up
269241
It depends on your eye level above ground.   Typically, it's in the range of 2-3 miles, depending on your height.  You can find out exactly at the link below.
1001104
I'm not sure if 35DB is audible by the human ear. Very low intensity.
803798
How far as in distance or to what extremes? Get some what? Ya might want to be more clear....or is this the fill in the blanks game?
683354
b. 93,300,000 Hz\n\nFM stations measure their frequencies in Megahertz (MHz)
892089
Since I don't know what you're using, please copy the words below and paste them into your browser.\n\nhow to extend the range of wireless  reception
380048
this really depends on you´re sound system and how good you´re hearing is but 128 is a good rate and will give you a lot more room on you´re hd and you won´t really tell the difference.
939675
the range fo the connection, the quality of it.