Monthly Archives: June 2015

UK Foundation Licence Power Limit

Posted on June 16, 2015 by Steve Netting OH3SPN

When I progressed through the licence system over a decade ago I was taught that the foundation power limit referred to power measured at the radio, not the antenna.  This was different to the other licence classes which specified power … Continue reading →

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Amplifier PTT Buffer Schematic

Posted on June 10, 2015 by Steve Netting OH3SPN

I’ve been keying my KW1000 linear using a relay to buffer the FT847.  The FT847 closed a 12V circuit across the relay and the relay in turn keyed whatever voltage/current the linear requires.  The relay in the KW1000 is old, large … Continue reading →

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Simple Fan Dipole

Posted on June 7, 2015 by Steve Netting OH3SPN

After starting life as a fan dipole, my home antenna was later converted into a single 40m dipole due to unwanted interaction between the bands (at the time 40/30m).  Recently, the need to operate multiple bands made me reconsider my … Continue reading →

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