xtgabyNov 1, 20201 minBuilding an endfed antenne kit (from www.hfkits.nl) with 1:49 transformer.Schematic: Buiding the transformer: 1) drilling the holes 2) Placing the hardware 3) Schematic 4) Winding the transformer...
xtgabyOct 26, 20201 minInsertion loss measurements.FT240-31 ===> FT240-31 FT240-31 ===> FT240-43 FT240-31 ===> FT240-61 FT240-31 ===> FT240-77 FT240-31 ===> FT240-31 FT240-31 ===>...
xtgabyOct 24, 20201 minBalun/Unun 1/9 ==> 50/450 Ohms.FT240-31, FT240-43, FT240-61 and FT240-77 Used material: FT240-31 Start version Tuned version for best SWR (move the coils for best...
xtgabyOct 21, 20201 minRevised edition. Building and measuring baluns (Part I) Go to Building and measuring baluns (Part I) and see the results of the guanella 1:4 balun now with teflon insulated wire. FT240-31 with...