Capt. Bob almost got it right! The VHF aviation band frequencies are 108-136MHz (not kHz) and by the way are AM, as opposed to most other services (ie landmobile, maritime) being FM.
AAR90 is correct in that it is HF radio that is used for long distance communications; HF being designated as 3 - 30MHz. Specific frequencies used in this part of the world (the Pacific) are 4.6 - 4.7MHz, 4.9MHz, 5.4 - 5.7MHz, 6.5 - 6.7MHz, 8.8 - 9MHz & 13.2 - 13.36 MHz. These bands are also used for military use as well, such as 13.2 - 13.36MHz.
Some aeronautical beacons can be found in the medium frequency (MF) band also, being 300kHz - 3MHz.
Medium Frequency (MF) band - 300kHz to 3MHz
High Frequency (HF) band - 3MHz to 30MHz
Very High Frequency (VHF) band - 30MHz to 300MHz
Ultra High Frequency (UHF) band - 300MHz to 3GHz
As has already been pointed out, VHF & UHF signals are generally 'line of sight', which means if you can see the aircraft, then you should be able to hear it, provided of course you have an efficient antenna.