How is squelch adjusted to hear a weak FM signal?

• A. Increase the volume slowly
• B. Set the squelch threshold so that receiver output audio is on all the time
• C. Decrease the gain on the receiver
• D. Adjust the antenna position

Answer: (B)

Setting the squelch threshold so that the receiver output audio is on all the time allows for the detection of weak signals. Squelch is a feature that helps to eliminate unwanted noise from the receiver when no signal is present. By adjusting the squelch to a lower threshold, you are enabling the receiver to output audio even when the signal is weak, so you can hear faint transmissions that might otherwise be muted.

In practical terms, this means that if you set the squelch too high, you'll only hear stronger signals, thus missing any weaker ones. By keeping the squelch open (or lowering it), you ensure that even quieter signals are amplified and delivered to your speaker. This approach is crucial when trying to communicate in areas with weak signal reception, ensuring you don't miss important information or communication.

The other options present methods that would not effectively enhance the reception of weak FM signals. For example, simply increasing the volume does not improve signal sensitivity; it only boosts what is already being received. Decreasing the gain on the receiver would typically reduce the overall sensitivity, making it harder to pick up weak signals. Adjusting the antenna position may improve reception, but it doesn’t directly involve the squelch control itself. Therefore, adjusting