A Realistic DX-300 back from the dead!

This video is a bit different from my others. It is of a vintage Realistic DX-300 shortwave receiver, which was brought back from the dead. I had to replace the AC line cord, put in a new electrolytic filter capacitor and also replaced the burned out bulbs with white LEDs. This is a short video of it in operation. These receivers were from the late 1970s into the early 1980s and featured Wadley loop design.

3 comments on “A Realistic DX-300 back from the dead!

  1. I am in the process of replacing all electrolytic capacitors in a DX-300. All three incandescent bulbs are burned out…what LED’s did you use, and what mods did you make to them to get even lighting on the meter & preselector displays? Thanks,


    • Hi Mike,

      Thanks for writing and visiting my site

      You need to use leds with a wide diffuse rating, which means their light emission is spread out over a wider range rather than a conventional led offers. They emit light with an intense fixed beam. An old trick is to use a very fine piece of sandpaper, 600 grit or higher and sand them very, very lightly to increase their light diffusion. Remember to add a 180 ohm resistor in series with them for proper voltage drop. I used 12v leds, which worked fine. Color choice would be up to you. I stuck with white as it was closet to the OEM incandescent color.

      Good Luck!

  2. Good job – seems like a nice radio. I noticed at 1:10 in the video when you were tuning the main VFO 14.213 MHz, the MHz section of the display blanked out for a short time? I will be buying one on eBay here in AU for AU$130. The radio works but apparently, selecting USB makes it “cut out” according to the seller. Hopefully it should be easy to fix otherwise it will be a $130 boat anchor!

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