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Discover the Magic Of HF Radio
Welcome to Worldwide Communications This presentation is designed to introduce the new or recently upgraded ham to HF radio.
Welcome to Worldwide Communications The information presented here is very general.
Welcome to Worldwide Communications More information can be found in the ARRL publications listed at the end of this program.
What Does HF Mean? HF stands for  HIGH FREQUENCY These are the frequencies from 1.8* to 30 MHz or the 160 meter   to 10 meter bands.  HF is also known as  shortwave . * 160m is actually a Mid Frequency (MF) band but it is included in the Amateur HF bands for ease of discussion.
How is  HF  different than FM repeaters? ,[object Object],[object Object]

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Hf radio

  • 1. Discover the Magic Of HF Radio
  • 2. Welcome to Worldwide Communications This presentation is designed to introduce the new or recently upgraded ham to HF radio.
  • 3. Welcome to Worldwide Communications The information presented here is very general.
  • 4. Welcome to Worldwide Communications More information can be found in the ARRL publications listed at the end of this program.
  • 5. What Does HF Mean? HF stands for HIGH FREQUENCY These are the frequencies from 1.8* to 30 MHz or the 160 meter to 10 meter bands. HF is also known as shortwave . * 160m is actually a Mid Frequency (MF) band but it is included in the Amateur HF bands for ease of discussion.
  • 6.
  • 7.
  • 8.
  • 9.
  • 10. HF Band Allocation 28.300 - 29.70 28.000 - 28.300 10 24.930 - 24.990 24.890 - 24.930 12 21.200 - 21.450 21.000 - 21.200 15 18.110 - 18.168 18.068 - 18.110 17 14.150 - 14.350 14.000 - 14.150 20 10.100 - 10.150 30 7.125 - 7.300 7.000 – 7.125 40 3.600 - 4.000 3.500 - 3.600 80 1.800 - 2.000 160 Voice CW, RTTY, Data Frequency (MHz) Meter Band
  • 11.  
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 19.
  • 20.
  • 21. HF is FUN With a 100 watt transceiver and a simple wire antenna you can start to communicate and make friends with other hams all over the country or the world.
  • 22. HF is FUN What this program covers
  • 23.
  • 24.
  • 25.
  • 26.
  • 27.
  • 28. HF is FUN Let’s Get Started
  • 29. Hearing Signals Out of Thin Air
  • 30.
  • 31.
  • 32.
  • 33.
  • 34. The Role of Sol How the Sun Opens and Closes The Bands
  • 35. The Sun’s energy causes atoms in the upper atmosphere to become charged. These charged particles are called ions .
  • 36. This charged region of the upper atmosphere is called the ionosphere.
  • 37. When a radio wave enters this region of charged particles, its direction of travel is altered.
  • 38. Radio waves change direction when they enter the ionosphere
  • 39.
  • 40.
  • 41. The Layers of the Ionosphere
  • 42.
  • 43.
  • 44.
  • 45.
  • 46.
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  • 50.
  • 51.
  • 52.
  • 53.
  • 54.
  • 55.
  • 56.
  • 57.
  • 58.
  • 59.
  • 60.
  • 61.
  • 62.
  • 63. Radio waves encountering the ionosphere above the critical angle don’t get bent enough to return to Earth. Waves entering at angles below the “critical angle reach the Earth at increasingly greater distances as the launch angle approaches horizontal.
  • 64.
  • 65.
  • 66.
  • 67.
  • 68.
  • 69.
  • 70.
  • 71.
  • 72.
  • 73. High Angle Radiation NVIS or Near Vertical Incidence Sky-wave
  • 74.
  • 75.
  • 76.  
  • 77.
  • 78.
  • 79. The gray line or terminator is a transition region between daylight and darkness. One side of the Earth is coming into sunrise, and the other is just past sunset.
  • 80.
  • 81.
  • 82.
  • 83.
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  • 91.
  • 92.
  • 93.
  • 94.
  • 95.
  • 96.
  • 97.
  • 98.
  • 99.
  • 100. Transceivers Common Controls Found On Amateur Radio Transceivers.
  • 101. Multi function meter shows information at a glance Use the meter like the speedometer in your car; don’t stare at it, but glance at it, making sure all things are proper.
  • 102.
  • 103. Reading The S Meter The receive signal on the meter here is 30 dB over S-9 or simply said, 30 over.
  • 104.
  • 105.
  • 106.
  • 107. What Are All Those Knobs?
  • 108. VFO – V ariable F requency O scillator . This is the main tuning knob used to tune in a station. This tunes your transmit and receive frequency that is shown on the MAIN DISPLAY.
  • 109.
  • 110.
  • 111.
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  • 120.
  • 122.
  • 123.
  • 124.
  • 125.
  • 126.
  • 127.
  • 128.
  • 129.
  • 130.
  • 131.
  • 132. Feedline 468 f (MHz) The Dipole Radiator, Feedline and matching network matching network
  • 133.  
  • 134.  
  • 135.
  • 136.
  • 137.  
  • 139.  
  • 140. Sloper
  • 141.
  • 142.
  • 144.
  • 145.
  • 146.
  • 147.
  • 148.
  • 149. Antennas W1AW One of the towers at ARRL Headquarters. This 120 foot tower stands well above the local tree line and has lots of aluminum on it.
  • 150.
  • 151.
  • 152.
  • 153.
  • 154.
  • 155.
  • 156.
  • 157.
  • 158.
  • 162.
  • 163.
  • 164.
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  • 166.
  • 167.
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  • 188.
  • 189.
  • 190.
  • 191.
  • 192.  
  • 193.
  • 194.  
  • 195.
  • 196.
  • 197. Publications ARRL License Manuals http://www.arrl.org/catalog/lm
  • 198. Morse Code Study Materials http://www.arrl.org/catalog/lm
  • 199. Publications ARRL Handbook http://www.arrl.org/catalog/?item=9760
  • 200. Publications ARRL Antenna Book http://www.arrl.org/catalog/?item=9043
  • 201. Publications ON4UN's Low-Band DXing Antennas, Equipment and Techniques for DXcitement on 160, 80 and 40m http://www.arrl.org/catalog/7040/
  • 202. Publications The Complete DX'er by Bob Locher, W9KNI http://www.arrl.org/catalog/?item=9073
  • 203. Publications On the Air with Ham Radio By Steve Ford, WB8IMY http://www.arrl.org/catalog/?item=8276
  • 204. Publications RF Exposure and You By Ed Hare, W1RFI http://www.arrl.org/catalog/?item=6621
  • 205.