What does HF/DF stand for?
HF/DF stands for "High Frequency/Direction Frequency"
How to abbreviate "High Frequency/Direction Frequency"?
"High Frequency/Direction Frequency" can be abbreviated as HF/DF
What is the meaning of HF/DF abbreviation?
The meaning of HF/DF abbreviation is "High Frequency/Direction Frequency"
What does HF/DF mean?
HF/DF as abbreviation means "High Frequency/Direction Frequency"
