Ham College 138 - Technician Exam Questions Part 25

Ham College 138 - Technician Exam Questions Part 25

From AmateurLogic.TV by tommy@amateurlogic.tv

April 11, 2026

About this episode

This episode covers various technician exam questions related to antennas and feed lines in amateur radio.

T9A – Antennas: vertical and horizontal polarization, concept of antenna gain, definition and types of beam antennas, antenna loading, common portable and mobile antennas, relationships between resonant length and frequency, and dipole pattern. T9B – Feed lines: types, attenuation vs frequency, selecting. SWR concepts, Antenna tuners (couplers), RF Connector selecting and weather protection. 59:17

People in this episode

Host: Tommy

Topics covered

  • amateur radio
  • technician exam
  • antennas
  • feed lines
  • SWR concepts
  • RF connectors

Keywords

  • T9A
  • T9B
  • antenna gain
  • beam antennas
  • antenna loading
  • resonant length
  • dipole pattern
  • attenuation
  • antenna tuners
  • weather protection

Mentioned in this episode

Organizations: AmateurLogic.TV

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