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\nAnswer Options\n\nA) The highest frequency which is refracted back to Earth\nB) The lowest frequency which is refracted back to Earth\nC) T…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":69,"like_count":4,"has_summary":false,"last_poster_username":"mcdanlj","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":12,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G4C10 - What could be a symptom caused by a ground loop in your station’s audio connections?","id":609,"title":"G4C10 - What could be a symptom caused by a ground loop in your station’s audio connections?","slug":"g4c10-what-could-be-a-symptom-caused-by-a-ground-loop-in-your-station-s-audio-connections","posts_count":3,"reply_count":1,"highest_post_number":3,"image_url":null,"created_at":"2025-12-15T18:18:59.976Z","last_posted_at":"2026-05-12T19:29:21.483Z","bumped":true,"bumped_at":"2026-05-12T19:29:21.483Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat could be a symptom caused by a ground loop in your station’s audio connections? \nAnswer Options\n\nA) You receive reports of “hum” on your station’s transmitted signal\nB) The SWR reading for one or more anten…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":43,"like_count":2,"has_summary":false,"last_poster_username":"mcdanlj","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":12,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G7B09 - What determines the frequency of an LC oscillator?","id":762,"title":"G7B09 - What determines the frequency of an LC oscillator?","slug":"g7b09-what-determines-the-frequency-of-an-lc-oscillator","posts_count":3,"reply_count":1,"highest_post_number":3,"image_url":null,"created_at":"2025-12-15T18:44:32.213Z","last_posted_at":"2026-04-30T20:39:53.193Z","bumped":true,"bumped_at":"2026-04-30T20:39:53.193Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat determines the frequency of an LC oscillator? \nAnswer Options\n\nA) The number of stages in the counter\nB) The number of stages in the divider\nC) The inductance and capacitance in the tank circuit\nD) The time…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":31,"like_count":2,"has_summary":false,"last_poster_username":"mcdanlj","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":null,"description":"Original Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null},{"extras":null,"description":"Recent Poster","user_id":12,"primary_group_id":null,"flair_group_id":null},{"extras":"latest","description":"Most Recent Poster","user_id":1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B11 - Which of the following is required for lightning protection ground rods?","id":945,"title":"G0B11 - Which of the following is required for lightning protection ground rods?","slug":"g0b11-which-of-the-following-is-required-for-lightning-protection-ground-rods","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":"https://forum.openhamprep.com/uploads/default/optimized/1X/7959c24ead3d332719ed5a84789da802368cadfc_2_1024x576.jpeg","created_at":"2025-12-15T18:55:54.330Z","last_posted_at":"2025-12-15T18:55:54.384Z","bumped":true,"bumped_at":"2025-12-15T18:55:54.384Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following is required for lightning protection ground rods? \nAnswer Options\n\nA) They must be bonded to all buried water and gas lines\nB) Bends in ground wires must be made as close as possible to a …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":36,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B05 - Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?","id":944,"title":"G0B05 - Which of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power?","slug":"g0b05-which-of-the-following-conditions-will-cause-a-ground-fault-circuit-interrupter-gfci-to-disconnect-ac-power","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:55:52.921Z","last_posted_at":"2025-12-15T18:55:52.971Z","bumped":true,"bumped_at":"2025-12-15T18:55:52.971Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following conditions will cause a ground fault circuit interrupter (GFCI) to disconnect AC power? \nAnswer Options\n\nA) Current flowing from one or more of the hot wires to the neutral wire\nB) Current…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":18,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B10 - Which of the following is a danger from lead-tin solder?","id":942,"title":"G0B10 - Which of the following is a danger from lead-tin solder?","slug":"g0b10-which-of-the-following-is-a-danger-from-lead-tin-solder","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:55:50.141Z","last_posted_at":"2025-12-15T18:55:50.196Z","bumped":true,"bumped_at":"2025-12-15T18:55:50.196Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following is a danger from lead-tin solder? \nAnswer Options\n\nA) Lead can contaminate food if hands are not washed carefully after handling the solder\nB) High voltages can cause lead-tin solder to di…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":14,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B04 - Where should the station’s lightning protection ground system be located?","id":941,"title":"G0B04 - Where should the station’s lightning protection ground system be located?","slug":"g0b04-where-should-the-station-s-lightning-protection-ground-system-be-located","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:55:48.722Z","last_posted_at":"2025-12-15T18:55:48.779Z","bumped":true,"bumped_at":"2025-12-15T18:55:48.779Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhere should the station’s lightning protection ground system be located? \nAnswer Options\n\nA) As close to the station equipment as possible\nB) Outside the building\nC) Next to the closest power pole\nD) Parallel t…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":13,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B09 - Which of the following is true of an emergency generator installation?","id":939,"title":"G0B09 - Which of the following is true of an emergency generator installation?","slug":"g0b09-which-of-the-following-is-true-of-an-emergency-generator-installation","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:55:45.894Z","last_posted_at":"2025-12-15T18:55:45.945Z","bumped":true,"bumped_at":"2025-12-15T18:55:45.945Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following is true of an emergency generator installation? \nAnswer Options\n\nA) The generator should be operated in a well-ventilated area\nB) The generator must be insulated from ground\nC) Fuel should…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":8,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B03 - Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?","id":938,"title":"G0B03 - Which size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring?","slug":"g0b03-which-size-of-fuse-or-circuit-breaker-would-be-appropriate-to-use-with-a-circuit-that-uses-awg-number-14-wiring","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:55:44.298Z","last_posted_at":"2025-12-15T18:55:44.348Z","bumped":true,"bumped_at":"2025-12-15T18:55:44.348Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich size of fuse or circuit breaker would be appropriate to use with a circuit that uses AWG number 14 wiring? \nAnswer Options\n\nA) 30 amperes\nB) 25 amperes\nC) 20 amperes\nD) 15 amperes\n\nCorrect Answer: D \n\nExpl…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":8,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B12 - What is the purpose of a power supply interlock?","id":923,"title":"G0B12 - What is the purpose of a power supply interlock?","slug":"g0b12-what-is-the-purpose-of-a-power-supply-interlock","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:19.409Z","last_posted_at":"2025-12-15T18:54:19.457Z","bumped":true,"bumped_at":"2025-12-15T18:54:19.457Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the purpose of a power supply interlock? \nAnswer Options\n\nA) To prevent unauthorized changes to the circuit that would void the manufacturer’s warranty\nB) To shut down the unit if it becomes too hot\nC) T…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":12,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B06 - Which of the following is covered by the National Electrical Code?","id":922,"title":"G0B06 - Which of the following is covered by the National Electrical Code?","slug":"g0b06-which-of-the-following-is-covered-by-the-national-electrical-code","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:18.036Z","last_posted_at":"2025-12-15T18:54:18.082Z","bumped":true,"bumped_at":"2025-12-15T18:54:18.082Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following is covered by the National Electrical Code? \nAnswer Options\n\nA) Acceptable bandwidth limits\nB) Acceptable modulation limits\nC) Electrical safety of the station\nD) RF exposure limits of the…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":21,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0A12 - What stations are subject to the FCC rules on RF exposure?","id":921,"title":"G0A12 - What stations are subject to the FCC rules on RF exposure?","slug":"g0a12-what-stations-are-subject-to-the-fcc-rules-on-rf-exposure","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":"https://forum.openhamprep.com/uploads/default/optimized/1X/c6f57917adfe577ea0bed74b188b240b548c11f2_2_800x1024.png","created_at":"2025-12-15T18:54:16.659Z","last_posted_at":"2025-12-15T18:54:16.708Z","bumped":true,"bumped_at":"2025-12-15T18:54:16.708Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat stations are subject to the FCC rules on RF exposure? \nAnswer Options\n\nA) All commercial stations; amateur radio stations are exempt\nB) Only stations with antennas lower than one wavelength above the ground\n…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":25,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B08 - What should be done before climbing a tower that supports electrically powered devices?","id":918,"title":"G0B08 - What should be done before climbing a tower that supports electrically powered devices?","slug":"g0b08-what-should-be-done-before-climbing-a-tower-that-supports-electrically-powered-devices","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:12.432Z","last_posted_at":"2025-12-15T18:54:12.480Z","bumped":true,"bumped_at":"2025-12-15T18:54:12.480Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat should be done before climbing a tower that supports electrically powered devices? \nAnswer Options\n\nA) Notify the electric company that a person will be working on the tower\nB) Make sure all circuits that s…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":12,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B02 - According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?","id":917,"title":"G0B02 - According to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker?","slug":"g0b02-according-to-the-national-electrical-code-what-is-the-minimum-wire-size-that-may-be-used-safely-for-wiring-with-a-20-ampere-circuit-breaker","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:11.017Z","last_posted_at":"2025-12-15T18:54:11.066Z","bumped":true,"bumped_at":"2025-12-15T18:54:11.066Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nAccording to the National Electrical Code, what is the minimum wire size that may be used safely for wiring with a 20-ampere circuit breaker? \nAnswer Options\n\nA) AWG number 20\nB) AWG number 16\nC) AWG number 12\nD…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":89,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0A08 - Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?","id":916,"title":"G0A08 - Which of the following steps must an amateur operator take to ensure compliance with RF safety regulations?","slug":"g0a08-which-of-the-following-steps-must-an-amateur-operator-take-to-ensure-compliance-with-rf-safety-regulations","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:09.626Z","last_posted_at":"2025-12-15T18:54:09.675Z","bumped":true,"bumped_at":"2025-12-15T18:54:09.675Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following steps must an amateur operator take to ensure compliance with RF safety regulations? \nAnswer Options\n\nA) Post a copy of FCC Part 97.13 in the station\nB) Notify neighbors within a 100-foot …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":26,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B13 - Where should lightning arrestors be located?","id":913,"title":"G0B13 - Where should lightning arrestors be located?","slug":"g0b13-where-should-lightning-arrestors-be-located","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:05.469Z","last_posted_at":"2025-12-15T18:54:05.518Z","bumped":true,"bumped_at":"2025-12-15T18:54:05.518Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhere should lightning arrestors be located? \nAnswer Options\n\nA) Where the feed lines enter the building\nB) On the antenna, opposite the feed point\nC) In series with each ground lead\nD) At the closest power pole…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":9,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B07 - Which of these choices should be observed when climbing a tower using a safety harness?","id":912,"title":"G0B07 - Which of these choices should be observed when climbing a tower using a safety harness?","slug":"g0b07-which-of-these-choices-should-be-observed-when-climbing-a-tower-using-a-safety-harness","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:04.088Z","last_posted_at":"2025-12-15T18:54:04.142Z","bumped":true,"bumped_at":"2025-12-15T18:54:04.142Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of these choices should be observed when climbing a tower using a safety harness? \nAnswer Options\n\nA) Always hold on to the tower with one hand\nB) Confirm that the harness is rated for the weight of the cl…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":15,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0B01 - Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?","id":911,"title":"G0B01 - Which wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers?","slug":"g0b01-which-wire-or-wires-in-a-four-conductor-240-vac-circuit-should-be-attached-to-fuses-or-circuit-breakers","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:02.691Z","last_posted_at":"2025-12-15T18:54:02.742Z","bumped":true,"bumped_at":"2025-12-15T18:54:02.742Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich wire or wires in a four-conductor 240 VAC circuit should be attached to fuses or circuit breakers? \nAnswer Options\n\nA) Only the hot wires\nB) Only the neutral wire\nC) Only the ground wire\nD) All wires\n\nCorr…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":12,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9C01 - Which of the following would increase the bandwidth of a Yagi antenna?","id":910,"title":"G9C01 - Which of the following would increase the bandwidth of a Yagi antenna?","slug":"g9c01-which-of-the-following-would-increase-the-bandwidth-of-a-yagi-antenna","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:54:01.293Z","last_posted_at":"2025-12-15T18:54:01.347Z","bumped":true,"bumped_at":"2025-12-15T18:54:01.347Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following would increase the bandwidth of a Yagi antenna? \nAnswer Options\n\nA) Larger-diameter elements\nB) Closer element spacing\nC) Loading coils in series with the element\nD) Tapered-diameter eleme…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":15,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9B07 - How does the feed point impedance of a horizontal ½ wave dipole antenna change as the antenna height is reduced to 1/10 wavelength above ground?","id":909,"title":"G9B07 - How does the feed point impedance of a horizontal 1/2 wave dipole antenna change as the antenna height is reduced to 1/10 wavelength above ground?","slug":"g9b07-how-does-the-feed-point-impedance-of-a-horizontal-1-2-wave-dipole-antenna-change-as-the-antenna-height-is-reduced-to-1-10-wavelength-above-ground","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:53:59.883Z","last_posted_at":"2025-12-15T18:53:59.933Z","bumped":true,"bumped_at":"2025-12-15T18:53:59.933Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nHow does the feed point impedance of a horizontal 1/2 wave dipole antenna change as the antenna height is reduced to 1/10 wavelength above ground? \nAnswer Options\n\nA) It steadily increases\nB) It steadily decreas…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":20,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9B01 - What is a characteristic of a random-wire HF antenna connected directly to the transmitter?","id":908,"title":"G9B01 - What is a characteristic of a random-wire HF antenna connected directly to the transmitter?","slug":"g9b01-what-is-a-characteristic-of-a-random-wire-hf-antenna-connected-directly-to-the-transmitter","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:53:58.445Z","last_posted_at":"2025-12-15T18:53:58.508Z","bumped":true,"bumped_at":"2025-12-15T18:53:58.508Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is a characteristic of a random-wire HF antenna connected directly to the transmitter? \nAnswer Options\n\nA) It must be longer than 1 wavelength\nB) Station equipment may carry significant RF current\nC) It pro…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":9,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9D07 - Which of the following describes a log-periodic antenna?","id":906,"title":"G9D07 - Which of the following describes a log-periodic antenna?","slug":"g9d07-which-of-the-following-describes-a-log-periodic-antenna","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:53:55.611Z","last_posted_at":"2025-12-15T18:53:55.666Z","bumped":true,"bumped_at":"2025-12-15T18:53:55.666Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following describes a log-periodic antenna? \nAnswer Options\n\nA) Element length and spacing vary logarithmically along the boom\nB) Impedance varies periodically as a function of frequency\nC) Gain var…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":17,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9D01 - Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?","id":905,"title":"G9D01 - Which of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day?","slug":"g9d01-which-of-the-following-antenna-types-will-be-most-effective-as-a-near-vertical-incidence-skywave-nvis-antenna-for-short-skip-communications-on-40-meters-during-the-day","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:53:54.209Z","last_posted_at":"2025-12-15T18:53:54.258Z","bumped":true,"bumped_at":"2025-12-15T18:53:54.258Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhich of the following antenna types will be most effective as a near vertical incidence skywave (NVIS) antenna for short-skip communications on 40 meters during the day? \nAnswer Options\n\nA) A horizontal dipole …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":2,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9C07 - What does “front-to-back ratio” mean in reference to a Yagi antenna?","id":904,"title":"G9C07 - What does “front-to-back ratio” mean in reference to a Yagi antenna?","slug":"g9c07-what-does-front-to-back-ratio-mean-in-reference-to-a-yagi-antenna","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:53:52.790Z","last_posted_at":"2025-12-15T18:53:52.839Z","bumped":true,"bumped_at":"2025-12-15T18:53:52.839Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat does “front-to-back ratio” mean in reference to a Yagi antenna? \nAnswer Options\n\nA) The number of directors versus the number of reflectors\nB) The relative position of the driven element with respect to the…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":7,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9B12 - What is the approximate length for a ¼ wave monopole antenna cut for 28.5 MHz?","id":903,"title":"G9B12 - What is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz?","slug":"g9b12-what-is-the-approximate-length-for-a-1-4-wave-monopole-antenna-cut-for-28-5-mhz","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:53:51.399Z","last_posted_at":"2025-12-15T18:53:51.450Z","bumped":true,"bumped_at":"2025-12-15T18:53:51.450Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the approximate length for a 1/4 wave monopole antenna cut for 28.5 MHz? \nAnswer Options\n\nA) 8 feet\nB) 11 feet\nC) 16 feet\nD) 21 feet\n\nCorrect Answer: A \n\nExplanation\nThe length of a quarter-wave monopole…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":18,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9B06 - Where should the radial wires of a ground-mounted vertical antenna system be placed?","id":902,"title":"G9B06 - Where should the radial wires of a ground-mounted vertical antenna system be placed?","slug":"g9b06-where-should-the-radial-wires-of-a-ground-mounted-vertical-antenna-system-be-placed","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:53:50.000Z","last_posted_at":"2025-12-15T18:53:50.052Z","bumped":true,"bumped_at":"2025-12-15T18:53:50.052Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhere should the radial wires of a ground-mounted vertical antenna system be placed? \nAnswer Options\n\nA) As high as possible above the ground\nB) Parallel to the antenna element\nC) On the surface or buried a few …","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":10,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G9A11 - What is the effect of transmission line loss on SWR measured at the input to the line?","id":901,"title":"G9A11 - What is the effect of transmission line loss on SWR measured at the input to the line?","slug":"g9a11-what-is-the-effect-of-transmission-line-loss-on-swr-measured-at-the-input-to-the-line","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:53:48.617Z","last_posted_at":"2025-12-15T18:53:48.669Z","bumped":true,"bumped_at":"2025-12-15T18:53:48.669Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the effect of transmission line loss on SWR measured at the input to the line? \nAnswer Options\n\nA) Higher loss reduces SWR measured at the input to the line\nB) Higher loss increases SWR measured at the i…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":11,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0A07 - What is the effect of modulation duty cycle on RF exposure?","id":899,"title":"G0A07 - What is the effect of modulation duty cycle on RF exposure?","slug":"g0a07-what-is-the-effect-of-modulation-duty-cycle-on-rf-exposure","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:52:10.902Z","last_posted_at":"2025-12-15T18:52:10.950Z","bumped":true,"bumped_at":"2025-12-15T18:52:10.950Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat is the effect of modulation duty cycle on RF exposure? \nAnswer Options\n\nA) A lower duty cycle permits greater power levels to be transmitted\nB) A higher duty cycle permits greater power levels to be transmi…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":10,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]},{"fancy_title":"G0A11 - What precaution should be taken if you install an indoor transmitting antenna?","id":898,"title":"G0A11 - What precaution should be taken if you install an indoor transmitting antenna?","slug":"g0a11-what-precaution-should-be-taken-if-you-install-an-indoor-transmitting-antenna","posts_count":1,"reply_count":0,"highest_post_number":1,"image_url":null,"created_at":"2025-12-15T18:52:09.514Z","last_posted_at":"2025-12-15T18:52:09.568Z","bumped":true,"bumped_at":"2025-12-15T18:52:09.568Z","archetype":"regular","unseen":false,"pinned":false,"unpinned":null,"excerpt":"Question\nWhat precaution should be taken if you install an indoor transmitting antenna? \nAnswer Options\n\nA) Locate the antenna close to your operating position to minimize feed-line radiation\nB) Position the antenna alon…","visible":true,"closed":false,"archived":false,"bookmarked":null,"liked":null,"tags":[],"tags_descriptions":{},"views":14,"like_count":0,"has_summary":false,"last_poster_username":"system","category_id":8,"op_like_count":0,"pinned_globally":false,"featured_link":null,"has_accepted_answer":false,"can_vote":false,"posters":[{"extras":"latest single","description":"Original Poster, Most Recent Poster","user_id":-1,"primary_group_id":null,"flair_group_id":null}]}]}}