Dipole for 40 Meters by K4VX
- Hereís a very simple and practical way to make a short but efficient 40-meter dipole.
The K4VX Linear-Loaded Dipole for 7 MHz
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40m & 80m portable wire antenna
- G8ODE antenna project, where the 40m & Short 80m antenna was deployed as a sloping wire antenna using the 10M fibre glass fishingpole and a hook on the house's gutter-board
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40 Meter Rotatable Dipole
- An excellent all-around 40 meter antenna for those who donít have room for a yagi by K6IF / W6BDN
GB Antennas and Towers
- Dutch Antenna and Tower Manufacturers from Slimline Square Triangular Round Towers.
Antennas production include Yagi Monoband/Dipole/HF Quad /50MHz and 70MHz Yagi-Quad, VHF-UHF yagi-Quad and Comby antennas VHF/UHF/SHF
- IDSP is an app for IPHONE and IPOD Touch.
Made by 2 powerful filters, a band pass and a band stop with adjustable bandwidth. Filters are butterworth 4 and 8 poles, sample rate at 44,100 32 bit. Cancel every noise and hear only your qso.