From 76746431001140bf325217b91685bef87e6a8d1a Mon Sep 17 00:00:00 2001 From: Renat Nurgaliyev Date: Fri, 22 May 2026 17:12:09 +0200 Subject: [PATCH] Small explanation improvements for B* and V* questions Automatically generated using Claude Code and Opus 4.7 in high reasoning mode --- explanations.json | 108 +++++++++++++++++++++++----------------------- 1 file changed, 54 insertions(+), 54 deletions(-) diff --git a/explanations.json b/explanations.json index 48697bf..11321ba 100644 --- a/explanations.json +++ b/explanations.json @@ -1,61 +1,61 @@ { "BA101": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DD4UQ spells D as Delta, U as Uniform and Q as Quebec; the traps are country-style words such as Denmark, Uruguay and Queen, which are not the ITU code words.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA102": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DK1KC uses Delta for D, Kilo for K and Charlie for C; Kilowatt, Denmark and Caesar are distractors, not ITU spelling-alphabet words.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA103": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DK5WP maps to Delta Kilo 5 Whiskey Papa; Kilowatt, William and Paris are common-looking substitutes but not the ITU words for K, W and P.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA104": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DL1FLO maps D/L/F/L/O to Delta, Lima, Foxtrot, Lima, Oscar; London, Florida and Oslo are distractors rather than ITU code words.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA105": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DL4YBZ uses Yankee, Bravo and Zulu for Y, B and Z; Ypsilon, Baker and Zebra are the non-ITU traps in the answer choices.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA106": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DM4EAX spells M as Mike, E as Echo, A as Alfa and X as X-ray; Madagascar, Ecuador and Amerika are distractors outside the ITU alphabet.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA107": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DN9RO/p uses Romeo and Oscar for R and O, while '/' is spoken as Stroke before the portable suffix; Radio, Oslo and Nordpol are distractors.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA108": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DN9STV maps S/T/V to Sierra, Tango and Victor; Santiago, Texas and Vulcano are plausible-sounding but not ITU code words.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA109": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "DO9XJZ uses X-ray, Juliett and Zulu for X, J and Z; Xavier, Japan and Zebra are the distractor words.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, "BA110": { - "revision": 1, - "explanation": "The ITU spelling alphabet maps each letter to a fixed code word; digits remain digits and '/' is spoken as 'Stroke'. Using that fixed mapping makes the call sign unambiguous over radio.", + "revision": 2, + "explanation": "IG9/DL4HR starts India Golf and uses Stroke for '/', with Hotel and Romeo at the end; Italy, Guatemala and Honolulu are distractors.", "source": "https://life.itu.int/radioclub/rr/ap14.pdf", "confidence": 9 }, @@ -696,38 +696,38 @@ "confidence": 8 }, "BE204": { - "revision": 1, - "explanation": "For SSB phone the tone digit is omitted; clear copy gives R5 and an S-meter reading of 5 gives report 55.", + "revision": 2, + "explanation": "On the analogue S-meter, the needle indicates S5. For SSB phone the tone digit is omitted; clear copy gives R5, so the report is 55.", "source": "https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Amateurfunk/Fragenkatalog/BetriebVorschriftFragKlAuEId7830pdf.pdf?__blob=publicationFile", "confidence": 8 }, "BE205": { - "revision": 1, - "explanation": "For SSB phone the tone digit is omitted; clear copy gives R5 and S9 gives report 59.", + "revision": 2, + "explanation": "On the analogue S-meter, the needle indicates S9. For SSB phone the tone digit is omitted; clear copy gives R5, so the report is 59.", "source": "https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Amateurfunk/Fragenkatalog/BetriebVorschriftFragKlAuEId7830pdf.pdf?__blob=publicationFile", "confidence": 8 }, "BE206": { - "revision": 1, - "explanation": "For SSB phone the tone digit is omitted; clear copy plus an S9 reading 20 dB over S9 is reported as 59+20 dB.", + "revision": 2, + "explanation": "On the analogue S-meter, the needle is 20 dB over S9. For SSB phone the tone digit is omitted, so clear copy is reported as 59+20 dB.", "source": "https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Amateurfunk/Fragenkatalog/BetriebVorschriftFragKlAuEId7830pdf.pdf?__blob=publicationFile", "confidence": 8 }, "BE207": { - "revision": 1, - "explanation": "For SSB phone the tone digit is omitted; clear copy gives R5 and the displayed S5 gives report 55.", + "revision": 2, + "explanation": "On the digital display, the shown signal level is S5. For SSB phone the tone digit is omitted; clear copy gives R5, so the report is 55.", "source": "https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Amateurfunk/Fragenkatalog/BetriebVorschriftFragKlAuEId7830pdf.pdf?__blob=publicationFile", "confidence": 8 }, "BE208": { - "revision": 1, - "explanation": "For SSB phone the tone digit is omitted; clear copy gives R5 and the displayed S9 gives report 59.", + "revision": 2, + "explanation": "On the digital display, the shown signal level is S9. For SSB phone the tone digit is omitted; clear copy gives R5, so the report is 59.", "source": "https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Amateurfunk/Fragenkatalog/BetriebVorschriftFragKlAuEId7830pdf.pdf?__blob=publicationFile", "confidence": 8 }, "BE209": { - "revision": 1, - "explanation": "For SSB phone the tone digit is omitted; clear copy plus a displayed value 20 dB over S9 is reported as 59+20 dB.", + "revision": 2, + "explanation": "On the digital display, the shown signal level is 20 dB over S9. For SSB phone the tone digit is omitted, so clear copy is reported as 59+20 dB.", "source": "https://www.bundesnetzagentur.de/SharedDocs/Downloads/DE/Sachgebiete/Telekommunikation/Unternehmen_Institutionen/Frequenzen/Amateurfunk/Fragenkatalog/BetriebVorschriftFragKlAuEId7830pdf.pdf?__blob=publicationFile", "confidence": 8 }, @@ -1218,9 +1218,9 @@ "confidence": 8 }, "VC101": { - "revision": 1, + "revision": 2, "explanation": "The AFuG is the German statutory basis for who may participate in the amateur service and under what conditions.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__1.html", "confidence": 10 }, "VC102": { @@ -1236,9 +1236,9 @@ "confidence": 10 }, "VC104": { - "revision": 1, + "revision": 2, "explanation": "AFuG assigns the law's administrative tasks to the Bundesnetzagentur.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__10.html", "confidence": 9 }, "VC105": { @@ -1266,9 +1266,9 @@ "confidence": 9 }, "VC109": { - "revision": 1, + "revision": 2, "explanation": "AFuG permits amateurs with assigned call signs to operate commercial, home-built or modified transmitters on amateur frequencies.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__5.html", "confidence": 9 }, "VC110": { @@ -1320,33 +1320,33 @@ "confidence": 9 }, "VC118": { - "revision": 1, + "revision": 2, "explanation": "AFuG requires amateur stations to meet EMC protection requirements so their operation remains compatible with other equipment.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__7.html", "confidence": 9 }, "VC119": { - "revision": 1, + "revision": 2, "explanation": "AFuG lets amateurs deviate from EMVG immunity requirements for their own station, meaning they choose their own station's immunity level.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__7.html", "confidence": 9 }, "VC120": { - "revision": 1, + "revision": 2, "explanation": "For self-built amateur equipment, AFuG allows the amateur to determine the station's immunity level instead of meeting ordinary EMVG immunity requirements.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__7.html", "confidence": 9 }, "VC121": { - "revision": 1, + "revision": 2, "explanation": "AFuG provides that BNetzA issues a site certificate on request; this is separate from the amateur-station display procedure.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__7.html", "confidence": 9 }, "VC122": { - "revision": 1, + "revision": 2, "explanation": "AFuG and AFuV enforcement powers allow BNetzA to restrict operation or order an amateur station taken out of service after violations.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__11.html", "confidence": 9 }, "VC123": { @@ -1356,15 +1356,15 @@ "confidence": 9 }, "VC124": { - "revision": 1, + "revision": 2, "explanation": "AFuG treats operating without admission/call sign, commercial telecom service, and unauthorised third-party message relay as fineable offences.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__9.html", "confidence": 9 }, "VC125": { - "revision": 1, + "revision": 2, "explanation": "An unlawful station operation can be pursued by BNetzA as an administrative offence with a monetary fine.", - "source": "https://www.gesetze-im-internet.de/afug_1997/BJNR149400997.html", + "source": "https://www.gesetze-im-internet.de/afug_1997/__9.html", "confidence": 9 }, "VD101": { @@ -1602,8 +1602,8 @@ "confidence": 10 }, "VD407": { - "revision": 1, - "explanation": "The 40 m band is outside class E/N privileges for club-station use at class A power; only class A operators may use it there.", + "revision": 2, + "explanation": "AFuV Anlage 1 lists 7.000-7.200 MHz only in the class A column. A class A club-station call sign does not expand the operator's own licence privileges, so only class A operators may use 40 m there.", "source": "https://www.gesetze-im-internet.de/afuv_2005/anlage_1.html", "confidence": 10 },