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Making a 28MHz rubber duck for the FT817
The main component in this design is the supporting rod, which the wire is wound upon.The rod needs to be 530mm for the antenna, plus about 15mm, which is inserted into a PL259 for RG8 style coaxial
post 09 Oct 2024
Antenna HF Portable Links →
ML-90 Vehicle Roof Rack Magnetic Loop Antenna
Highly efficient antenna, radiating 10dB to 14dB more than whip antennas. Equivalent to a 500 Watt transmitter with a whip antenna
Mobile on 136kHz
It's just under 3Mtrs long. It is mounted on the roof of the car on a cross member bolted to the luggage rails
Portable Vertical Antenna 20-30-40mt
The concept is to make the antenna self supporting and able to be broken down into small pieces for easy transport
Antenna Mounts
Thus the antenna should be attached in such a way to maximize what little ground plane a vehicle represents
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Highly efficient antenna, radiating 10dB to 14dB more than whip antennas. Equivalent to a 500 Watt transmitter with a whip antenna
It's just under 3Mtrs long. It is mounted on the roof of the car on a cross member bolted to the luggage rails
The concept is to make the antenna self supporting and able to be broken down into small pieces for easy transport
Thus the antenna should be attached in such a way to maximize what little ground plane a vehicle represents
Ferrite Shop Ferrite-shop on-line shop, cable clamps,toroids, cable cores, technic,ferrite material choice
Amateur radio kits by Kanga US
Pcs Electronics RF power amplifiers-pallets archives-ABC of FM AM DAB+ DRM radio transmitters