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Emergency J-Pole Antenna
This is made from the old flat TV antenna wire
post 06 Dec 2024
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2 meter J-Pole
Cut the tubing to the size shown for the desired band. The only section where size is not critical is the mast section. Use any size you desire for mounting purposes
2 meter Aluminum Slim Jim Antenna
The Slim Jim is generally characterized as an end-fed vertical folded dipole. As with all end fed dipoles some sort of impedance matching is necessary to keep the SWR down
3 meter Slim-Jim Antenna
The gamma match consists of a 150mm length of 10mm aluminium tubing
Project antenna for 2 meter
The gamma match consists of a 150mm length of 10mm aluminium tubing
A slim antenna for vhf band
To build it I use pieces of 450 Ohms leader line approx. 154cm, a PVC tube approx. 200cm, rope,SO-239 female connector, RG-58 about 1,5meter
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Cut the tubing to the size shown for the desired band. The only section where size is not critical is the mast section. Use any size you desire for mounting purposes
The Slim Jim is generally characterized as an end-fed vertical folded dipole. As with all end fed dipoles some sort of impedance matching is necessary to keep the SWR down
The gamma match consists of a 150mm length of 10mm aluminium tubing
The gamma match consists of a 150mm length of 10mm aluminium tubing
To build it I use pieces of 450 Ohms leader line approx. 154cm, a PVC tube approx. 200cm, rope,SO-239 female connector, RG-58 about 1,5meter
PIC-Keyer This project describes the construction of a real "QRP" keyer with a small microcontroller PIC 16F84, with slightly modified hardware also PIC16F62
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Conrad Electronic Electronic components online shop in German and Italian