Grupa: Administrator 
Lokalizacja:: Kłodzko JO80IK06AO
Posty: 44753 #2607112
Od: 2013-10-18
| A close-up shot of the 2 x 2el 144MHz 4 element LFA Yagis installed at HB9Q before the 70cms X-pol was added
The X-pol 70cms LFA Yagi with 7 elements in the same plane. Close loop feed system that is completed grounded one side, helsp reduce noise and keep the RX/TX safe from static when runnign QRO
Both 2m and 70cms LFAs can se seen pointed to the dish in this shot. Note the rotation of the 70cms LFA. Due to the third harmonic relationship between 2m and 70cms, the 2m elements would conduct while 70cms was in use and distort the pattern of the 70cms LFA and reduce performance. Rotating out of the same plane, reduces drastically the chances of this happening
Source G0KSC
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73! Stanisław SP6MLK
Kłodzko JO80IK06AO
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