Dummy Load

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mongoose
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Dummy Load

Post by mongoose » Thursday 26th Feb 2009, 7:30

I'm looking for some help with making my own dummy load. Something like a 50 watt model. What do I need? Thanks

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frogman296
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Re: Dummy Load

Post by frogman296 » Thursday 26th Feb 2009, 8:43


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mongoose
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Re: Dummy Load

Post by mongoose » Friday 27th Feb 2009, 6:21

Well it looks easy enough to make, Thanks.

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frogman296
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Re: Dummy Load

Post by frogman296 » Friday 27th Feb 2009, 6:46

yes it is very easy to make... cheap and it does the trick... enjoy

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The Defpom
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Re: Dummy Load

Post by The Defpom » Friday 27th Feb 2009, 7:51

INteresting, and pretty clever.

I do wonder though if the resistance and tuning changes with temperature, as it warms up it may increase its resistance as the molecules expand, perhaps if you build it you could check the SWR at room temp, and again when it is hotter after it has been used and see if it changes much.

Another possible modification to this design is to use a metal container, and use a single rod directly in the center for the feedline, stopping short of the bottom by amount the same amount as the distance from the sides, and having the shield running to the cans body, that would resolve the non shielding issue that is mentioned.

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mongoose
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Re: Dummy Load

Post by mongoose » Monday 2nd Mar 2009, 8:29

This was the easiest project I have made so far and it works great. Just a little and I do mean LITTLE bit of salt at a time till you get 1.1:1 match. Thanks again.

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