Transmitter interference
Explanation of question 1
- i ‘Frequency drift’ is a slow
change of frequency
- ii ‘Chirp’ is a fast change of
frequency which can occur during keying
- i and ii are both true
- i is true but ii is false
- i is false but ii is true
- i and ii are both false
The answer is :- 1Frequency drift is a slow change of
frequency, very often occurring during the
‘warm-up’ period when the oscillator components may
change slightly in value. Chirp can be due to the sudden
loading on the power supply when the key is closed. This can
cause a reduction in the power supply voltage and so vary the
frequency of the oscillator.