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howto:hambasics:polarization [2020/08/07 13:18] – [Wavelength and Antenna Length] va7fihowto:hambasics:sections:polarization [2020/11/08 16:10] (current) va7fi
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-|  [[home |Ham Basics]]  |  [[test |About The Test]]  |  [[Reference |References]]  ^  [[sections |Study Sections]]  | 
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 ====== How To Make A Radio Wave ====== ====== How To Make A Radio Wave ======
-Back on the [[intro#hz |Intro Page]], we introduced to the idea of frequency and saw that+Back on the [[intro#hz|Intro Page]], we introduced to the idea of frequency and saw that
  
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 ====== Wavelength and Antenna Length ====== ====== Wavelength and Antenna Length ======
  
-As we saw previously, the wavelength (λ) in metres of the wave is dictated by the frequency (\$f\$in MHz and the speed of light:+As we saw previously, the wavelength (λ) in metres of the wave is dictated by the frequency \$f\$ in MHz and the speed of light:
  
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-This explains the Band name in the table on the [[intro#full_frequency_list |intro page]].  For example, the frequency range of the 2m band is 144 Mhz -- 148 Mhz.  If we calculate the wavelength of 146 Mhz, we get: 300 ÷ 146 = 2.05 m+This explains the Band name in the table on the [[intro#full_frequency_list|intro page]].  For example, the frequency range of the 2m band is 144 Mhz -- 148 Mhz.  If we calculate the wavelength of 146 Mhz, we get: 300 ÷ 146 = 2.05 m
  
 Now it turns out that the size of the antenna is very closely related to the wavelength of the signal we wish to transmit or receive.  For a dipole, the total length is roughly half of the wavelength. So an antenna for the 2m band should be roughly 1m long, while an antenna for the 160m band would be roughly 80m long! Now it turns out that the size of the antenna is very closely related to the wavelength of the signal we wish to transmit or receive.  For a dipole, the total length is roughly half of the wavelength. So an antenna for the 2m band should be roughly 1m long, while an antenna for the 160m band would be roughly 80m long!
howto/hambasics/sections/polarization.1596831530.txt.gz · Last modified: 2020/08/07 13:18 by va7fi