If you want to hear the control tower as well as the aircraft then you should visit the airport. This means you should easily pick up transmissions from an aircraft in the air as there are no obstructions between you and the aircraft, but you may not hear the control tower of a nearby airport because there are obstructions such as hills and buildings etc. If you leave the Squelch turned up then you will hear the background noise and the scanner will stop on that channel and will not scan.īoth VHF and UHF are short range, line-of-sight radio transmissions which are restricted to a maximum range of about 200 miles due to the curvature of the earth and usually considerably less depending on the surroundings (hills etc). When you start to search or scan then you should turn the Squelch down just enough to get rid of the background noise so that the scanner can scan through all the channels. There should be a knob on your scanner to control the Squelch. Therefore your airband scanner should have a step size of 8.33KHz. Recently the spacing between airband frequencies has been reduced from 25KHz spacing to 8.33KHz spacing so as to increase the number of frequencies available. Using the correct Step size will mean that you don't miss any frequencies. The Step size will depend on the scanner and some can scan through a list of frequencies using the following steps:- 5, 6.25, 8.33, 10, 12.5, 15, 20, 25, 50, 100kHz.
#ICOM IC R6 HANDHELD RECEIVER MANUAL#
Note that all scanners work slightly differently and you should always consult the manual for your particular model. This helps to organise all the frequencies that you want to store on the scanner. You could use other Banks to store Display Teams and/or Common Display Frequencies (used at many airshows). The idea is that you could fill a Bank with specific frequencies for a particular airshow and just scan the Channels in that Bank. A Bank consists of a group of Channels and you can program a frequency into a Channel. The Scanner's memory is used to store your frequencies which are usually arranged into Banks and Channels. The scanner may also have NFM (Narrow FM) and WFM (Wide FM) but for listening to aircraft transmissions you should only use the AM mode. When using a scanner you can either use the 'Search' mode where it searches through a range of frequencies until it stops when it finds a transmission for you to listen to, or use the 'Scan' mode where you store specific frequencies into the scanner and it will just scan through these frequencies until it finds a transmission.Ī scanner usually lets you set either AM (Amplitude Modulation) or FM (Frequency Modulation).
You should also set the scanner to the AM mode (Amplitude Modulation). If you want to listen to military aircraft transmissions then you will need a scanner that has a frequency range of 225-400MHz.
To receive civilian aircraft transmissions you will need a scanner that has a frequency range of 108-137Mhz.
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