Dummy Load
Dummy Load
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
- Heavy User
- Posts: 228
- Joined: Monday 12th Nov 2007, 0:47
- Location: canada
Re: Dummy Load
Well it looks easy enough to make, Thanks.
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frogman296
- Heavy User
- Posts: 228
- Joined: Monday 12th Nov 2007, 0:47
- Location: canada
Re: Dummy Load
yes it is very easy to make... cheap and it does the trick... enjoy
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The Defpom
- Site Admin
- Posts: 436
- Joined: Friday 20th Aug 2004, 18:06
- Location: New Zealand
- Contact:
Re: Dummy Load
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.
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.
Re: Dummy Load
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.