
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
More episodes of AmateurLogic.TV
- Ham College 140: Beginning General Class Studies = General Part 1 · June 6, 2026
- AmateurLogic 217: Hamvention 2026 · May 23, 2026
- Ham College 139 - Technician Exam Questions Part 26 · May 9, 2026
- AmateurLogic 216: Repair or Replace · April 18, 2026
- Ham College 137 - Technician Exam Questions Part 24 · April 4, 2026
- Ham College 136 - Technician Exam Questions Part 23 · March 28, 2026
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