Subj : Ham Radio Glossary (P) To : All From : Daryl Stout Date : Thu Jan 17 2019 12:04 am From QRZ.Com, the Icom handout, and Part 97 Of The FCC Rules - Ham Radio Glossary - An overview of amateur radio terms. PA Power Amplifier Packet A digital mode that sends "packets" of data between stations. Since it checks each packet received with what was sent, packet communications are error free...what is sent is what is received. This can mean the difference with traffic concerning 10 or 100 casualties. While there are not as many packet bulletin board systems (PBBS's) now, as compared to years ago, many hams still enjoy this mode of the hobby. It requires a rig, a TNC, and a computer. VHF Packet typically is at 1200 baud, while HF packet is at 300 baud. Parawatch See Dualwatch. Paddles Short for "Morse Code Key", one that contains small paddles that are tapped in order to produce semi-automatic Morse Code (when connected to a "keyer"). Part 97 Portion of the FCC rules relating to amateur radio. Patch Short for "Phone Patch". PBT Pass Band Tuning. A function electronically reducing interference by narrowing IF bandwidth. PEP "Peak Envelope Power"; used to measure power output of an single sideband signal. RF power at maximum amplitude. Phone Patch Device allowing audio from a telephone line to be placed in the audio circuits of a transmitter/receiver (thanks to WD5CTQ). Physician For the purposes of the Part 97 Rules, a person who is licensed to practice in a place where the amateur service is regulated by the FCC, as either a Doctor of Medicine (MD) or a Doctor of Osteopathy (DO). P-N Junction A P-N junction (or N-P junction) is formed by creating two substrate materials of P type and N type on a semiconductor. P type means it is doped with "free holes" (electron depletion) and the N type is doped with electrons. Of course by physics, the free holes and free electrons would like to neutralize each other. A diode is formed with a P-N junction. Basically, when you have a NPN transistor, you have two junctions ... an NP junction between the collector and base, and a PN junction between the base and emitter. Vice-versa with a PNP transistor. How you bias those junctions controls how the transistor works. Pink Ticket FCC Notice of Rule Violation PL "Private Line", Motorola's trademarked name for CTCSS. PLL Phase Locked Loop. Circuit to synthesize the different frequencies a radio will operate on. PM Phase Modulation or Pulse Modulation Pocket Beep Beeping function when a specific signal is received. PNP See "P-N Junction". Priority Watch Reception mode, which by a selected frequency is always periodically checked when VFO is set to a different frequency. PSK31 A digital mode which is rapidly growing in popularity; utilizes phase shift keying (PSK) which is transmitted at 31 baud (speed). For more information, please see http://www.psk31.org. While it does not have "error correction", it can detect signals below the noise floor, using such programs as DigiPan and MixW. PTT "Push to Talk"; a button on a microphone or on the side of a handheld radio which activates the transmitter. PWR Power --- SBBSecho 3.06-Win32 * Origin: RadioWxNet: The Thunderbolt BBS tbolt.synchro.net (801:1/2)