Ham Radio International Space Station ISS FM repeater information Downlink: 437.800 +/- doppler Uplink: 145.990 (67hz PL Tone) software-defined radio gqrx Ham Alphabet Letter Standard International Phonetic Codeword A alfa B bravo C charlie D delta E echo F foxtrot G golf H hotel I india J juliett K kilo L lima M mike N november O oscar P papa Q quebec R romeo S sierra T tango U uniform V victor W whiskey X x-ray Y yankee Z zulu Q signals Signal Meaning QRS Send more slowly QTH My location is QRL see if a frequency is in use QSY Change frequency QSB Your signal is fading QRM I am being interfered with QRN I am troubled by static QRZ Who is calling me QRX I will call you again Procedural signals Signal Meaning CQ Calling any station DE From K Any station please reply Canada Amateur Bands Amateur meter band Frequency 75/80 3.5 to 4.0 MHz 160 1.8 to 2.0 MHz 40 7.0 to 7.3 MHz 20 14.000 to 14.350 MHz 15 21.000 to 21.450 MHz 10 28.000 to 29.700 MHz