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COBWEBB-Antenna-20m-17m-15m-12m-10m
E'omnidirezionale e quindi non servono rotori occupa poco spazio e su tetto e'discreta
post 26 Jan 2024
Antenna Cobweb Links →
Construction of his Cobbweb antenna
After the success of my first cobweb antenna I decided to build a rigid version for my home QTH
The CobWebb antenna
20m, 17m, 15m, 12m, 10m operation, at 4 meters from the ground for test
Antenna COBWEBB 20m – 17m – 15m – 12m – 10m
E' omnidirezionale e quindi non servono rotori occupa poco spazio e su tetto e' discreta
4-Band c.o.l.a antenna 20-17-15-10m
Deploying a centre fed open loop half-wave dipole in a square shape lowers the impedance to around 8-12ohms.Steve Hunt G3TXQ, took a different approach and his design uses a 1:4 step up balun transformer to compensate for the low impedance
20
After the success of my first cobweb antenna I decided to build a rigid version for my home QTH
20m, 17m, 15m, 12m, 10m operation, at 4 meters from the ground for test
E' omnidirezionale e quindi non servono rotori occupa poco spazio e su tetto e' discreta
Deploying a centre fed open loop half-wave dipole in a square shape lowers the impedance to around 8-12ohms.Steve Hunt G3TXQ, took a different approach and his design uses a 1:4 step up balun transformer to compensate for the low impedance
5W CW transceiver kit A feature-packed,high performance, single-band 5W CW transceiver kit, with WSPR beacon
Amateur radio kits by Kanga US
50MHz to 28MHz RX Converter The concept of the rx converter is quite simple and nothing really new. the local oscillator is a standard colpitts crystal oscillator producing the 22mhz lo signal