orion ll

orion ll

Antennas : 80M

• Horizontal Loop for 80 meters
  
  Modelling an horizontal Loop antenna at 3.5 MHz
  [ Hits: 1037 | Votes: 2 | Rating: 5.5 ]

• G5RV multi-band antenna
  
  Multi band centre fed antenna capable of very efficient operation on all HF bands specifically ...
  [ Hits: 7303 | Votes: 8 | Rating: 7.38 ]
• G5RV multi-band antenna construction guide - LX4SKY  ^pop
  
  Excellent guide to build your own G5RV antenna by Lombry
  [ Hits: 38824 | Votes: 60 | Rating: 6.49 ]

• Wellbrook ALA 1530 active magnetic loop review - LOMBRY Thierry
  
  Interesting review about active magnetic loop antenna Wellbrook ALA 1530 and 330S by ON4SKY ...
  [ Hits: 3980 | Votes: 4 | Rating: 6.75 ]

• Antennas : theory and designs - Thierry LOMBRY, ON4SKY
  
  Thierry LOMBRY ON4SKY develops in several long articles all you need to know about antennas ...
  [ Hits: 9214 | Votes: 11 | Rating: 3.27 ]

• Russian Oblasts and prefixes
  
  Russian callsign prefix series: RAA-RZZ, UAA-UIZ, includs Amateur callsign system in Russia
  [ Hits: 1945 | Votes: 14 | Rating: 5.43 ]

• All about Lightning protection - Thierry LOMBRY, ON4SKY
  
  Thierry LOMBRY ON4SKY gives advice to amateurs about lightning protection of an hamshack including pictures ...
  [ Hits: 917 | Votes: 2 | Rating: 5.5 ]

• How to select an amplifier - Thierry LOMBRY, ON4SKY
  
  Thierry LOMBRY ON4SKY develops in three long articles all you need to know about amplification ...
  [ Hits: 5511 | Votes: 5 | Rating: 6.4 ]
• How to become an amateur radio - LOMBRY Thierry
  
  How to become an amateur radio by ON4SKY Review of general conditions to get licensed ...
  [ Hits: 682 | Votes: 0 | Rating: 0 ]

• The History of amateur radio from 900BC to date - Thierry LOMBRY, ON4SKY
  
  Thierry LOMBRY ON4SKY develops in depth and with original pictures the long history of amateur ...
  [ Hits: 678 | Votes: 1 | Rating: 10 ]

• Luxorion ON4SKY website - ON4SKY
  
  Thierry Lombry LX4SKY aka ON4SKY has developped a excellent educational website mainly devoted to amateur ...
  [ Hits: 971 | Votes: 5 | Rating: 9 ]

• Equipment for portable HF operations - LX4SKY
  
  An excellent and comprehensive article on portable HF operations with attention on selecting proper equipment ...
  [ Hits: 455 | Votes: 0 | Rating: 0 ]

• DX Activities of ONL5183 - Thierry LOMBRY ONL5183
  
  Whith more than 20 years of ham practicen SWL Thierry LOMBRY alias ONL5183 has written ...
  [ Hits: 1065 | Votes: 3 | Rating: 6.33 ]

• How to select a tube HF amplifier
  
  Excellent article and guide to choose the best RF power amplifier that fit your needs ...
  [ Hits: 715 | Votes: 1 | Rating: 10 ]