P
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P
P5 : North Korea. For DX'ers, the most unattainable contact or a non-existent station. The rarest callsign prefix as one of two countries worldwide (the other is 7O Yemen) to have had no licensed radio amateur service at all since 2002.
PACTOR : An FSK mode that combines packet and AMTOR technologies.
Parabolic Antenna : An antenna in the shape of a dish with a parabolic cross section.
Parallel circuit : usually used to describe a tuned circuit in which the capacitive and inductive elements are parallel to each other.
PEP : Peak envelope Power. The average power sent to the transmission line by the transmitter. Can be calculated by multiplying Peak Envelope Voltage (PEV) by 0.707
Period : The time in seconds taken for a complete wave to pass a reference point, period is the reciprocal of frequency.
PEV :Peak Envelope Voltage. The maximum voltage on a transmission line during transmission.
Phonetic Alphabet Specific, easily identifiable, non-confusable words are used instead of the letters of the alphabet.
Pi pad : one of the possible configurations used in Attenuators
PNP : A semiconductor device composed of an N layer sandwiched between two P layers.
Polarization : Used to describe the orientation of the electric field produced by an antenna compared to the surface of the Earth.
Portable: A mode of operation in which a station may be moved for rapid deployment from a temporary location, but is not able to operate while mobile. In CW, portable operators may identify using /P. Portable stations differ from mobile stations in that large antennas or other structures must be folded or stowed away in order to move the station to a new location. While well-suited to field day or emergency/disaster operations, portable stations normally do not have a mobile station's ability to continue transmission while in motion.
Power : The rate of energy consumption. Calculated by multiplying voltage by current, P = VI
Propagation : How well a signal is transferred from the sending station to the receiving station, as a function of the path type (ground wave, sky wave reflection or direct line-of-sight) and related atmospheric conditions.
PSK : Phase Shift Keying - a digital mode.
PTT : Push to talk