INDOOR MULTBAND DIPOLE FOR 40M - 10M
Indoor multiband dipole 20m -10m (to scale), 2003
New (2005) indoor multiband dipole 40m -10m (not to scale)
15m dipole replaced by 40m/15m dipole, see below
Antenna wires connected in parallel to HyGain BN-86 Balun
Antenna wires attached to roofspars
Spacing between wires = 0.2m, spacing between roofspars = 0.6m
21 uH coil, 54% from feedpoint (21 turns on Amidon T200-2)
to fit 40/15m dopole in roofspace (15m)
Detail of end-isolator with wires folded back and twisted
for fine tuning the dipoles for the lower frequencies
Detail of end-isolator with clamp for fine tuning the dipoles for the higher frequencies
SWR-Plot (EZNEC Simulation)
Real SWR-Values (CIA Antenna Analizer)