Dummy Load

This is an area for you to post requests for any radio parts, equipment or test gear that you are looking for.
Post Reply
User avatar
mongoose
Dead Key
Dead Key
Posts: 21
Joined: Monday 22nd Sep 2008, 10:23
First Name: Mike
Location: Michigan

Dummy Load

Post by mongoose »

I'm looking for some help with making my own dummy load. Something like a 50 watt model. What do I need? Thanks
frogman296
Heavy User
Heavy User
Posts: 228
Joined: Monday 12th Nov 2007, 0:47
Location: canada

Re: Dummy Load

Post by frogman296 »

User avatar
mongoose
Dead Key
Dead Key
Posts: 21
Joined: Monday 22nd Sep 2008, 10:23
First Name: Mike
Location: Michigan

Re: Dummy Load

Post by mongoose »

Well it looks easy enough to make, Thanks.
frogman296
Heavy User
Heavy User
Posts: 228
Joined: Monday 12th Nov 2007, 0:47
Location: canada

Re: Dummy Load

Post by frogman296 »

yes it is very easy to make... cheap and it does the trick... enjoy
User avatar
The Defpom
Site Admin
Site Admin
Posts: 436
Joined: Friday 20th Aug 2004, 18:06
Location: New Zealand
Contact:

Re: Dummy Load

Post by The Defpom »

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.
User avatar
mongoose
Dead Key
Dead Key
Posts: 21
Joined: Monday 22nd Sep 2008, 10:23
First Name: Mike
Location: Michigan

Re: Dummy Load

Post by mongoose »

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.
Post Reply