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<table width="750" border="1" cellpadding="6">
{{glossary}}
  <tr>
 
    <td>[[Dictionary of Ham Radio Terms | A]] </td>
 
    <td>[[B]]</td>
==F==
    <td>[[C]]</td>
 
    <td>[[D]]</td>
'''F/D''' : The ratio of focal length to diameter of a [[Dish or Parabola | parabolic dish]] antenna.
    <td>[[E]]</td>
 
    <td>[[F]]</td>
'''[[Feedlines|Feedline]]''' : The wire or cable that joins a [[Transceivers |transmitter]] or [[Receivers |receiver]] to an [[Antennas |antenna]]. Also known as a transmission line.
    <td>[[G]]</td>
 
    <td>[[H]]</td>
'''FET''' : Field-effect transistor, a semiconductor in which current between source and drain is controlled by voltage applied to a high-impedance gate
    <td>[[I]]</td>
 
    <td>[[J]]</td>
'''[[Field day]]''' : An annual event in which portable stations are deployed, contacts made and new or prospective operators encouraged to get on the air.
    <td>[[K]]</td>
 
    <td>[[L]]</td>
'''[[Filters |Filter]]''' : An electric circuit (often called a network) that allows certain frequencies to pass but rejects (attenuates) other unwanted frequencies.
    <td>[[M]]</td>
 
    <td>[[N]]</td>
'''FM '''(Frequency Modulated or Frequency Modulation):  The shape of the carrier signal is changed (modulated) by the frequency of another signal, usually the voice of the operator.
    <td>[[O]]</td>
 
    <td>[[P]]</td>
'''[[Electromagnetic Waves |Frequency]]''': The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)
    <td>[[Q]]</td>
 
    <td>[[R]]</td>
'''Frequency Shift Keying''': A digital mode in which the signal is broken into "chunks". Each chunk is then shifted in frequency slightly above or below the central carrier. Effectively, frequency modulation used to carry a digital signal.
    <td>[[S]]</td>
 
    <td>[[T]]</td>
''' Fuse''' : A device that self destructs when too much current passes through it - used for circuit protection.
    <td>[[U]]</td>
    <td>[[V]]</td>
    <td>[[W]]</td>
    <td>[[X]]</td>
    <td>[[Y]]</td>
    <td>[[Z]]</td>
    <td>[[0 - 9]] </td>
  </tr>
</table>

Revision as of 13:43, 12 June 2009

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 - 9


F

F/D : The ratio of focal length to diameter of a parabolic dish antenna.

Feedline : The wire or cable that joins a transmitter or receiver to an antenna. Also known as a transmission line.

FET : Field-effect transistor, a semiconductor in which current between source and drain is controlled by voltage applied to a high-impedance gate

Field day : An annual event in which portable stations are deployed, contacts made and new or prospective operators encouraged to get on the air.

Filter : An electric circuit (often called a network) that allows certain frequencies to pass but rejects (attenuates) other unwanted frequencies.

FM (Frequency Modulated or Frequency Modulation): The shape of the carrier signal is changed (modulated) by the frequency of another signal, usually the voice of the operator.

Frequency: The number of complete waves that pass a reference point per second. Expressed in Hertz (Hz)

Frequency Shift Keying: A digital mode in which the signal is broken into "chunks". Each chunk is then shifted in frequency slightly above or below the central carrier. Effectively, frequency modulation used to carry a digital signal.

Fuse : A device that self destructs when too much current passes through it - used for circuit protection.

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