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Amateur projects

Amateur projects

Amateur projects. Do it your self.

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Cheap High Power 50 / 144 MHz Relay
Cheap QRO Relay 50 / 144 MHz with high isolation Intended to switch antenna to QRO or preamplifier without need for another isolation relay. This relay is good eno..
0.00€
Cheap High Power 50 - 144 MHz Relay with "N" connectors
Cheap QRO Relay 50 - 144 MHz with high isolation and "N" connectors Intended to switch antenna to QRO or preamplifier without need for another isolation relay. Thi..
0.00€
Symmetrical High Power 50-144MHz Relay
Symmetrical High Power 50 - 144MHz Relay Intended to switch two equal antennas to QRO. Possible use is as H / V switch. Although relay will be perfect to switch an..
0.00€
Capacitor self resonant frequency SRF
Capacitor self resonant frequency SRF popular for amateur use We used 0805 and 1206 SMD capacitors, film capacitors and electrolytic capacitors with wire + VIA length ab..
0.00€
Inductor Self Resonant Frequency SRF
Inductor self resonant frequency SRF We measured Series Resonant Frequency "SRF" of some axial, SMD and hand wind inductors.   Axial inductors like this..
0.00€
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