70cm transverter

70 cm transverter (2) elektor october 1981 — 10-25 construction and calibration UHF equipment is rather sensitive to external influences. It is well known that a tuned circuit, for instance, can be "detuned" simply "by pointing at it". Metal components in the vicinity of tuned circuits will also affect their oper- ation at the high frequencies involved here. As a rule (even at lower frequen- cies) the circuits can "see" each other, pick up each other"s frequencies, if they are in close proximity. To what extent this affects their tuning depends on their radiated power (the transverter will radiate about 10 mW of power without the help of the output stage). Unless effective measures are taken to reduce this phenomenon, therefore, the transverter is likely to cause consider- able problems (with the G.P.O. in particular). It does not matter in which order the screens are fitted, but before soldering is started holes will have to be drilled to allow for connections between the secti...