MUF (Maximum Usable Frequency) is a maximum value of frequency that can be reflected by an ionosphere in a circuit of High Frequency (HF) radio communication
Why we must know MUF ?
(specially for operator radio )
To guarantee the success communication of HF radio which use an ionosphere as a media to reflect the signal radio ( it’s call a skywave propagation )
A propagation of radio signal
The relation MUF with a skywave propagation
The reflected frequency is depend on the condition of ionosphere which is have a variation each time, day, and seasonal.
• fp > f radio ; f radio will be absorb
• fp < f radio ; f radio will be pass
• fp = f radio ; f radio will be reflected
How we know the MUF value?
2 main factor/parameter to know a MUF value
– Critical frequency ( fo )
– Obliquity factor (k (distance, high))
And..How to use MUF?
• By knowing the MUF, now you can use it as a reference frequency to have/make a communication with other party at the other side. Which mean….
• It is the maximum frequency you can use, and you can use the frequency below the MUF…
Tidak ada komentar:
Posting Komentar