Ham Box
IARU Region 1
QTH Locator
Converts geographic coordinates into the 6-character Maidenhead Grid Square.
Latitude
Longitude
Calculate Grid
Use GPS
Enter coordinates or use GPS.
Dipole Calculator
Calculates physical wire length for resonance. Formula: λ = 300/f, then × 0.95 velocity factor for bare copper wire.
Target Frequency (MHz)
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Band Sentry
Checks frequency allocation per IARU Region 1 band plan. Covers HF (80m–10m), VHF (2m), UHF (70cm), and PMR446.
Check Frequency (MHz)
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Phonetic Decoder
Translates text into the NATO/ICAO Phonetic Alphabet.
Callsign / Text
Telegraph Key
Converts text into standard CW audio. Supports A–Z, 0–9, and prosigns (? , . / =).
Message
Speed:
20
WPM
Tone:
700
Hz
Transmit Signal
dB / Power Calc
Converts between dBm and Watts. Core exam material: +3dB = double power, +10dB = 10× power.
Power (dBm)
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