Saturday, November 19, 2011

Making a Simple QRP Dummy Load from Spare Parts

Here is an easy 50-ohm 2-watt dummy load for QRP ham radio service. Two 100-ohm 1-watt resistors in parallel make the circuit. A core of a scrap of RG-58/U coaxial cable forms an insulated wire down the center. A 140 watt Weller soldering gun was used to "tin" the metal barrel of the connector. The insulated wire was inserted (after it cooled!) with a 15-watt iron.

These are in my Flickr set "Amateur Radio QRP 2W Dummy Load".

The pen points to where the base of the connector was "tinned".

The full set of pictures follow in the badge below.

Amateur Radio QRP 2W Dummy Load

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