Question

In which frequency range do the cordless phones mostly work?

(a) 43-50 MHz

(b) 88-108 MHz

(c) 540-1600 KHz

(d) 200-540 KHz

I have been asked this question during a job interview.

Question is taken from Cordless Telephone Systems topic in chapter Introduction to Wireless Communication Systems of Wireless/Mobile

Answer 1

Correct answer is (a) 43-50 MHz

To explain I would say: Cordless phones mostly operate in the frequency range of 43-50 MHz. The frequency range of FM is 88-108 MHz and for AM is 540-1600 KHz.