Home Up Lazy Builders PA 70 cm 2 m + 6m 2 m 6 m 23 cm Exper. Builders PA

70 cm

Important notes:

All connections between RF parts, and also connections to ground MUST BE as short as possible! This is VHF, not HF, in spite that designs may looks like HF! Hi! See mechanical layout of PA designs below!

If input circuit trimmers, need to be at maximum or minimum capacity during adjusting, it is necessary to change the length of the cable between the exciter and the amplifier itself. The optimal length of the cable should be determined experimentally to obtain adjustment with approximately the calculated values of capacitances. This experimentally determined cable should always be used when operating the amplifier. A change of exciter could occasionally require a new length of cable to be determined.

 

New! Not yet published in magazines

1xGS31B 70cm PA

 1   New!

           

Built by Ficza, YU7AA

 

*****

 NEW !

1xGS35B 70cm PA

  1   2   3 

                               

Built by Teo, YU7AR

*****

1x & 2x GI7B 70cm PA /zip 466 kB/

1     2                     5    6

 

           

Built by Teo, YU7AR

 

               

Built by Saša, YU1EO

 

Home Up Lazy Builders PA 70 cm 2 m + 6m 2 m 6 m 23 cm Exper. Builders PA