|EXTENSION of 40/80 meter TRAP-dipole to 160 meter.||
My homemade TRAP-dipole for 40/80 meter need a extension so I can have the 160 meter band
I started to make the TRAP's:
I use 50 m.m. drainpipe, and RG58 A/U coax - 15,55 windings, all counting is done by the program COAX-TRAPS.
Finished the trap's I made some
Before I mount the traps, I would use some Silicon to kip water/rain away from the coils.
I would use the CW-band so the TRAP's should bee at resonance in the low end of 80 meter band..
My new VNWA measured the resonance frequency.
Measuring on antenna after mounting the TRAP's.
This is 160 meter band, optimized for the CW-band.
I added 9 meter of wire to each end, and cut to resonance.
After mounting the TRAP's to 160 meter, the 80 meter band had a little change.
And also the 40 meter band is change a bit.
Her is all 3 antennas in one sweep.
PICTURES from the GARDEN