w2rdk.com
  • About
  • W2RDK Hamshack
  • W2RDK/4
  • Projects
  • Novice 1965
​Over the years I have built many accessories for my stations. Here are some of the notables
PictureSPC Transmatch from an article by W1FB in 1986

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SPC Tuner Rear Panel

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Link-coupled transmatch from a design by W1SE from 1985. Not yet completed in this picture.

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Link Coupled Tuner Rear Panel
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160 meter controller used on my 160 meter inverted-L antenna. Heath-Kit SA-2550 motor-driven 500pf capacitor, Alpha-Delta Arc-Plug arrestor, Balun Designs Maxi-choke balun and Array-Solutions bleeder inductor. Built in 1994

DMR Hotspots
PictureN5BOC Simplex DMR Hotspot using a 2.4 " Nextion screen (Idle Mode)
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N5BOC Duplex DMR Hotspot using a 3.5" Nextion screen (Recieve Mode)
Other hotspot's I built and a portable DMR go-box​

43' Vertical w/AD5X Matching Network
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Final assembly

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Heath-Kit SA-2550 controller. This was an e-bay find without the control box. I built one and sold the unit for a nice profit. Built in 2012

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Six-position antenna switch from a design by KO4NR - Not yet completed in this picture

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160 meter receiving loop from a design by W1FB from 1974

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Matching circuitry for the 160 meter receiving loop
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  • About
  • W2RDK Hamshack
  • W2RDK/4
  • Projects
  • Novice 1965