Curioustab Logo Curioustab
Home » Electronics and Communication Engineering » Communication Systems

Cordless telephones typically operate within what approximate range?

Difficulty: Easy

Correct Answer: 100 m

Explanation:


Introduction / Context:
Cordless telephones are designed for short-range indoor and household communication. Their range is limited by power, frequency, and regulatory restrictions.


Given Data / Assumptions:

  • Frequency band: typically 900 MHz, 1.9 GHz, or 2.4 GHz ISM bands.
  • Power levels: low, consumer device limits.


Concept / Approach:
In practical usage, cordless telephones cover around 30–100 meters indoors, extended slightly outdoors depending on environment.


Step-by-Step Solution:

Indoor walls reduce signal range significantly.Standard specification: ~100 meters in open areas.Therefore, 100 m is the most appropriate option.


Verification / Alternative check:
Manufacturer datasheets for DECT cordless phones confirm 50–100 m indoor range.


Why Other Options Are Wrong:

1000 m / 500 m: unrealistic for consumer cordless phones.10 m: too small; corresponds more to Bluetooth.


Common Pitfalls:

Confusing cordless phones with mobile phones (cellular).


Final Answer:

100 m
← Previous Question Next Question→

More Questions from Communication Systems

Discussion & Comments

No comments yet. Be the first to comment!
Join Discussion