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Why are portable radio aerials designed to flop about?
Those telescoping chromed aerials. Years ago they could be locked in a vertical position. Surely there is a better way?
Sorry guys, I understand the requirement for mobility in the aerial. But of the 4 radios in our home, every one has an aerial which is connected to the radio by a single screw, not firmly enough to hold the aerial in any vertical position, so it flops over until it leans against something, very impractical.
2 Answers
- Violet WLv 71 decade agoFavorite Answer
So that you can orient it for best reception.
When tilted sideways, the antenna exhibits some directivity. If conditions are right, you might hear multiple stations (situated in different cities) on the same frequency. By orienting the antenna properly, the antenna will favor (amplify) the signal in one direction at the expense of the (unwanted) signal from a different direction.
- RorschachLv 51 decade ago
Damage avoidance. mobile antennae suffer a lot of abuse, so spring mounting it allows the antenna to get bent without damage.
