"Again, any of those students (including myself) can divide 1 MHz with 8.33 KHz and get ONLY 120 Channels !!!
But if we divide 1 MHz with ACTUAL 160 Channels"
You are forgetting the 40 25Khz "channels" that still exist per Megahertz. ie:132.025 (25Khz spacing) is still dialled in on your 8.33Mhz radio as 132.025 wheras 132.025 (8.33khz spacing) actually is dialled in as 132.030 on the radio.... But in this case it's transparent to the pilot because ATC would tell you to contact "XYZ on 132.030"
So you have 120, 8.33Khz "channels" and 40 25khz "channels" per Megahertz = 160 total "channels" available with an 8.33Mhz radio.
The following may make it clearer!
Spacing AAAAAAFrequencies AAA25 kHz radio displayaaa8.33 kHz radio display
25aaaaaaaaaaaa132.0000aaaaaaaaa132.00aaaaaaaaaaa132.000
8.33aaaaaaaaaa132.0000aaaaaaaaaaaaaaaaaaaaaaaaaa132.005
8.33aaaaaaaaaa132.0083aaaaaaaaaaaaaaaaaaaaaaaaaa132.010
8.33aaaaaaaaaa132.0167aaaaaaaaaaaaaaaaaaaaaaaaaa132.015
25aaaaaaaaaaaa132.0250aaaaaaaaa132.02aaaaaaaaaaa132.025
8.33aaaaaaaaaa132.0250aaaaaaaaaaaaaaaaaaaaaaaaaa132.030
8.33aaaaaaaaaa132.0333aaaaaaaaaaaaaaaaaaaaaaaaaa132.035
8.33aaaaaaaaaa132.0417aaaaaaaaaaaaaaaaaaaaaaaaaa132.040
and so on....
DD
Last edited by Data Dad; 12th Jun 2006 at 09:41.