HB9Q with LFA Yagis make EME possible to small antenna stations

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

  PRZEJDŹ NA FORUM