Category Archives: Projects

Projects

Linear Power Supply Upgrade

Astron RM-50 Rebuild I was using an Astron RM-50 13.8vdc power supply for my Kenwood TS-480HX transceiver.  The power supply was sagging badly with only 150 watts output from the transceiver.  A  refurbishment of the regulator board helped a little, … Continue reading

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RF Sampler

W0IVJ’s RF Sampler, 2nd version, by N9MW   The two versions of the RF sampler.  The copper tube is the latest iteration. Core assembly ready to place in the T fitting. The PC board configuration. Coupler Construction Notes   Considerations: … Continue reading

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40 Meter Delta Loop by K9IMM

40 Meter Delta Loop by K9IMM Ted had a vacant feed line at the top of one of his towers and decided to try a 40 meter delta loop fed at the top with horizontal polarization.  The antenna seems to … Continue reading

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75 Meter Loop

KA9AF’s Proposed 75 meter Loop Mike intends to hang a 75 meter loop between two towers. The loop will be rectangular in shape with the top 87.25 feet long at 55 feet and the bottom at 15 feet. EZ-Nec makes … Continue reading

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30 Meter Loop

  30 meter full wavelength loop, diamond configuration, This antenna is an easy one day construction project.  It was made out of common number 12 stranded electrical wire.  The side and top attachment points are made by removing two inches … Continue reading

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