But an antenna that is ½ wavelength long has all the current adding part of the time. For every electron moving one way, there's another going the opposite way. Thus an 'antenna' a full wavelength long has an average phase of 0º and doesn't emit many photons. Since the EM field is a gauge field, phase matters. Her name was McGill, she called herself 'Lil', but everyone knew her as Nancy.Īntennas work by accelerating electrons. I guess our FCC took to heart that line from old Beatles' song 'Rocky Raccoon'. See My first 'converter box' displayed both numbers, the actual RF channel and the number by which it is known, plus its actual frequency in mhz. EG my local channel 6 PBS moved from RF channel 6 to RF channel 40 so now i can use a much smaller antenna for that one.īut my other PBS channel, 19, only moved one slot up to RF channel 20. Lots of vhf stations moved to uhf frequencies here in US every station has its channel number by which it's known to the public and appears in all its logos and another 'RF Channel' number denoting what frequency it actually occupies. When US went digital stations kept their channel number but it might be assigned to a different frequency. Without knowing your country, region or city it is very hard to guess at the answers to your questions. You seem to be confused and to be guessing how it might work. That channel information is available on the web if you look. We're building a biquad antenna feed because it offers very good performance. We are designing an antenna to work with 802.11b WiFi systems. I think you may now be confusing traditional channel names with the channel allocated for the digital TV stream.īuilding a BIQUAD Antenna Introduction. Since the transition from analogue TV to digital TV required parallel operation for a number of years, the Company names could not remain attached to the original allocated channel. That company was then named after the channel number. In Australia, the same analogue TV channel number was allocated to the same TV company in many cities. Each digital TV stream uses the bandwidth of an old analogue channel, but it can carry several of the old analogue TV channels.
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