Ham College 138 - Technician Exam Questions Part 25
AmateurLogic.TV (Audio) · Tommy Martin
April 11, 2026
Audio is streamed directly from the publisher (amateurlogic.tv) as published in their RSS feed. Play Podcasts does not host this file. Rights-holders can request removal through the copyright & takedown page.
Show Notes
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