CAT SYSTEMS
CAT SYSTEM | liens |
Intercom | |
FT1000MPEXE | |
FT847EXE | |
MCP-D700 | http://www.kenwood.com/i/products/info/amateur/tmd700a_700e_soft.html |
Commander | |
TRX Manager | |
CCFT847 | |
1000mp | |
ICOM | http://www.icomamerica.com/en/products/amateur/hf/rsba1/default.aspx |
3 Elements Wide Band Yagi 27.4-28.7mhz)
3 Element Wide Band Yagi ( 27.4 - 28.7 mhz ) Since so much CB Radio Operators are also licensed Amateur Radio Operators , I did a Wideband design of my 3 Element 11m Yagi . Utilizing the same 10 ft boom , I was able to design an antenna that has good SWR ( 1.3 <--> 1.3 ) from 27.300 mhz to 28.700 mhz . However to get such a large bandwidth , I had to sacrifice gain and front to back . SPECIFICATIONS..... Boom length = 10 ft Gain ( free Space ) = 6.54 DBI ----- Modeled at 40 ft height = 6 DBD Front to Back ( FB ) = 17 DBD Feed Point is a Split dipole , so the antenna can be directly fed with 50 ohm coax with a 1:1 choke balun ...... trying to design this wideband antenna using a Gamma Match , I was unable to get the wideband characteristic . I hope someone tries this design out , I am in the process of designing a 4 element wideband Yagi that may have a boom length of 16 ft , as requested by a local operator . Split Dipole Diagram
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