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Dec 13, 2011, 08:25 AM
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Amherst, VA
Joined Jun 2006
9,261 Posts
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SWR meter - A DIY project
It's been a while since I made a tutorial so I figured it's time for another one. This is my DIY SWR meter. The complete build and operation instructions can be found here: http://fpvlab.com/forums/showthread....urself-project
It is made of 5 parts: Directional coupler Microwave detector diode Resistor Capacitor Short RG316 jumper You must be a master at soldering to build this, but it's cheap and works all the way up through 5.8GHz. That's right, a 5.8GHz SWR meter. Finally! SWR is calculated as follows: p = Vr/Vf SWR = 1+p/1-p Videos of how to use it: Forward power
Reverse power
Good luck and have fun with this one. -Alex |
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Latest blog entry: Project Covert Ops: Long range ground...
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Dec 13, 2011, 08:56 AM
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Australia, NSW
Joined Dec 2010
1,240 Posts
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ooooh
im off to google what SWR is lol |
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Dec 13, 2011, 09:03 AM
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United States, CA, Salinas
Joined Nov 2011
152 Posts
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Quote:
Ask a silly person, get a silly answer... |
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Dec 13, 2011, 09:32 AM
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United States, CA, Santa Cruz
Joined Dec 2008
237 Posts
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woo thanks man! This looks like a col project to finally test my antennas that don't really look "right"
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Dec 13, 2011, 10:25 AM
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Joined Mar 2009
35 Posts
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Does it work with 5.8GHz item ?
thanks |
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Dec 13, 2011, 12:30 PM
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Joined Mar 2009
35 Posts
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Dec 13, 2011, 02:21 PM
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Amherst, VA
Joined Jun 2006
9,261 Posts
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^That should work fine. I used an Agligent HSMS-286K. This stuff is very hard to spec out, sadly...
-Alex |
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Latest blog entry: Project Covert Ops: Long range ground...
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Dec 13, 2011, 03:26 PM
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SW England
Joined Aug 2009
789 Posts
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Quote:
Also, careful using RG316 at 5.8GHz, it's not rated to that frequency. For 5.8GHz, you need CLF200 or similar/better. Well done again Alex. Nigel. |
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Dec 13, 2011, 04:17 PM
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Joined Mar 2009
35 Posts
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Is it good CERAMIC capacitor 0,01uf (or 0,1uF ) 100V ?
thanks |
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Dec 13, 2011, 09:41 PM
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United States, CA, El Dorado Hills
Joined Jan 2011
125 Posts
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Awesome! I've been waiting for this. Thanks IB!!!
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Dec 14, 2011, 12:26 AM
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Joined Sep 2009
938 Posts
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Hi Alex,
Can you suggest a parts list for this project?? Thank you for sharing. Teo |
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Dec 14, 2011, 12:29 AM
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USA, CO, Durango
Joined Sep 2010
664 Posts
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parts list is over on the 'lab
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Dec 14, 2011, 02:05 AM
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Joined Jun 2010
555 Posts
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Quote:
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Dec 14, 2011, 02:26 AM
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Birmingham, Alabama
Joined Jun 2002
2,937 Posts
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awesome. now upsize the parts so you can knock out about 150 for the website. too lazy to solder!
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Dec 14, 2011, 03:07 AM
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Eureka, CA
Joined Oct 2002
1,281 Posts
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Outstanding!
Just what I've been waiting for. |
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