2 ms·
AM broadcast requires a relatively larger antenna larger antenna to receive. Though, most of portable AM radios use a bar shaped antenna inside. There are sever
by unsignedint 11y ago
AM broadcast requires a relatively larger antenna larger antenna to receive. Though, most of portable AM radios use a bar shaped antenna inside. There are several problems with it.
1) You will have to integrate that antenna somewhere in the device, and you can't really make it "smaller" than a certain size.
2) Even if you could integrate the antenna, it is directional; with a use case for mobile devices, unless you are getting an exceptionally strong signal, you'll get varying results out of it.
- a8da6b0c91d 11y agoThe headphone wire isn't enough? The cheapo AM portables everybody has been plopping down next to the beer bucket since the 70s never seemed to have an antenna longer than 2.5 ft. I understand the wavelength is longer and the power is lower.
- unsignedint 11y agoThose whip antennas are for FM broadcast. For the AM broadcast, the bar antenna has a coil of wire wrapped around an iron bar to compensate for requirement of a longer antenna to receive AM broadcast. It'd be actually size prohibitive to make an antenna like FM radio, but designed for AM.