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Tuner-Match ATU
500pf variable capacitors and a e roller inductor the variable capacitors with 3mm plate spacings are well capable of withstanding voltages of several kilo volts
post 05 Dec 2024
Antenna Transmatch tuner Links →
Auto-Couplers
There is little thought about the additional losses within the coupler itself. In fact, the losses through the auto-coupler are usually several times more than a 2:1 SWR would cause through coax
BLT tuner qrp station
I managed to find 2 indentical poly variable capacitors that checked out to range from 15 to 300 pf, and they even had 1/4" shafts for mounting knobs
Coupling for Levy antenna
Continuous tuning from the 20 meter band to the 10 meter band
Dentron Super Tuner
One of the most practical and useful tuners I ever owned was the one made by the Dentron Company back in the 1970s and early 80s
186
There is little thought about the additional losses within the coupler itself. In fact, the losses through the auto-coupler are usually several times more than a 2:1 SWR would cause through coax
I managed to find 2 indentical poly variable capacitors that checked out to range from 15 to 300 pf, and they even had 1/4" shafts for mounting knobs
Continuous tuning from the 20 meter band to the 10 meter band
One of the most practical and useful tuners I ever owned was the one made by the Dentron Company back in the 1970s and early 80s
Antenna splitter per VHF-UHF per quattro ricevitori Chi dispone di una sola antenna e vuole collegarvi più di un ricevitore necessità di uno splitter
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