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| rdfs:comment | - Hi Buzz Folk – Episode 1072 included some speculation as to why AM broadcast band reception is seldom included with portable media devices. I think the problem comes no so much from the receiver technology as from the antenna requirements. FM broadcast uses a wavelength on the order of three meters, so a relatively short whip antenna can efficiently capture the signal. a three or four foot long headphone cord typically doubles as the antenna on these devices. You will find a very brief discussion of this type of antenna at: Great show, looking forward to many more episodes. LTS
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| Episode Title | - Open Android Alliance to fight Google's evil empire
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| Hosts | - Tom Merritt
Co-hosts: Molly Wood & Natali del Conte
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| abstract | - Hi Buzz Folk – Episode 1072 included some speculation as to why AM broadcast band reception is seldom included with portable media devices. I think the problem comes no so much from the receiver technology as from the antenna requirements. FM broadcast uses a wavelength on the order of three meters, so a relatively short whip antenna can efficiently capture the signal. a three or four foot long headphone cord typically doubles as the antenna on these devices. In contrast, the wavelength used by AM broadcast ranges up to 600 meters, so a very short antenna is quite ineffective. If you dig around the bottom of your closet, find your old AM/FM transistor radio and take it apart, you will notice something called a ferrite loopstick antenna. This device makes use of a high permeability ferrite core inside a relatively small coil of wire to provide sufficient antenna capture area for these low frequency signals. As far as I know, there is no way to provide for AM broadcast reception that does not require a relatively bulky antenna such as the ferrite loopstick, and this is probably why you seldom find this feature in portable media players. You will find a very brief discussion of this type of antenna at: Great show, looking forward to many more episodes. This article talks about a new book “Three Felonies a Day” that makes the premise that the lag between the legal system and technology causes you to commit an average of three felonies per day just by using the internet. btw, what is BOL’s email address? LTS
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