antenna reception problems

If the broadcast is made from a height h above the ground, no reception by direct signals is possible beyond the points A and B. The distance up to which signals can be received can be calculated in terms of h and the radius R of the Earth. In the right-angled triangle CBP, CP 2 = CB..

Communication Systems..

When free space is the communication channel, antennas radiate and receiver the signal. Theory shows that the antennas operate effective only when their dimensions are of the order of the magnitude of wavelength of the signal being transmitted...

The taste buds are stimulated by certain ions and compounds present in the food. Cations like Na + present in the inorganic salts evoke the salty taste and those like H + present in the acids evoke a sour taste. Organic compounds like sugars, dextrins, glycerol, saccharine, etc. result in s..

Telefacsimile's or Fax machines are a must for many businesses around the world. The fax machine however, did not become widely used until the late 1980'..

(i) The combination of the F 1 and F 2 layers into one F layer (ii) The virtual disappearance of the other two layers, which were causing noticeable absorption during the d..

Jeff saw a photograph of an antenna and it measured 9 meter in length. What would be the actual length of the antenna, if the scale is 0.3 meter : 4 meter? => 120 meters or 121 meters or 119 meters or None of the above..

Tongue is a muscular structure that has the organs of taste reception. The organs for sense of taste are the taste bu..

Tongue is a muscular structure that has the organs of taste reception. The organs for sense of taste are the taste bud..

The 'modem' is a contraction of the term modulator-demodulator. It is a conversion that facilitates the transmission and reception of the data over the public switched telephone network (PSTN..