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Old Apr 14, 2012, 05:36 AM
Registered User
Finland
Joined Apr 2011
27 Posts
Build Log
The simplest SWR meter for few hours

Description is here, idea is not mine.
Here is the cheapest way to build SWR meter. Unbelievable, but it works
Satfinder from ebay:
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Some modification:
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Adapter from ebay as PCB (btw, op amp used from satfinder)
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Measurement head:
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Battery is added - again from ebay
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Ugly content is closed
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Have a fun!
It really works!
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Old Apr 14, 2012, 07:09 AM
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Romania, Dolj, Craiova
Joined Sep 2007
15,495 Posts
Good for 950-2150MHz only.
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Old Apr 14, 2012, 07:47 AM
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Joined Apr 2012
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thats 90% of the flyers(900-2ghz). 5.8 is catching on but most 5.8 are for close range and really you dont need SWR meter for a 300 meter quad flight on 5.8

2.4 sucks imo, ive had a few friends buy all 2.4 gear and they went back down to 1.3 or 900
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Old Apr 14, 2012, 08:05 AM
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Wichita
Joined Dec 2008
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To bad. 950 is to high for the USA. Mine is at 910
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Old Apr 14, 2012, 08:08 AM
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Quote:
Originally Posted by Pixturethis View Post
To bad. 950 is to high for the USA. Mine is at 910
i did 1040 fine, nothing uses 1040. the "band" is "reserved" for general aviation but i pick up NOTHING on 1040 even next to international airports

910 is swamped with cell phone calls and stuff. it's worse than flying 2.4 over a wifi filled neighborhood
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Old Apr 14, 2012, 08:12 AM
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Romania, Dolj, Craiova
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Quote:
Originally Posted by fpv raptor View Post
thats 90% of the flyers(900-2ghz). 5.8 is catching on but most 5.8 are for close range and really you dont need SWR meter for a 300 meter quad flight on 5.8

2.4 sucks imo, ive had a few friends buy all 2.4 gear and they went back down to 1.3 or 900
15km, and was possible especially due to a good tuning.
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Old Apr 14, 2012, 08:14 AM
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Wichita
Joined Dec 2008
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I don't thing that is true about 910. I fly with my AT&T iphone next to me & have sprint & verision fliers with me when i fly all the time. As I've gone 39 miles (63km) with almost perfect video. I only get a little static past 30 miles, but it's hard to see.
Marc
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Old Apr 14, 2012, 08:42 AM
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well im in orlando florida, does wichita have 3,000,000 people in a 13 mile radius? i fly 6 miles from the center of that circle , and that is very close to both an international airport and two executive airports

Density 2,327.3/sq mi (898.6/km2)

your density looks the same but you have 1/4 the metro population
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Old Apr 14, 2012, 08:59 AM
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Wichita
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True, where I fly there is about one house every other mile. I only fly over a city, very small city at 4000ft &12 miles out. So I guess it all depends on where you live as to if 900 is good or not.
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Old Apr 14, 2012, 09:24 AM
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Finland
Joined Apr 2011
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Quote:
Originally Posted by RENATOA View Post
Good for 950-2150MHz only.
Guys, don't look at satfinder label - I am using only a satfinder case and millivoltmeter. This device will be working with 2.4 GHz also, and tested with 868 mhz. Take a look at original description please!

The circuit on this page serves as a Voltage Standing Wave Ratio meter or VSWR meter for the VHF-UHF-SHF frequency range. This includes the Wifi (802.11b/g), 2m, 70cm and 13cm Radio Amateur bands.

If you are not happy with this label, you can tear off it
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Old Apr 14, 2012, 09:39 AM
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Wichita
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Awesome, thanks for the info.
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Old Apr 14, 2012, 11:44 AM
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ok now that's 98% of the flyers. for every 30-50 people i see FPV, only one uses 5.8ghz

very good thanks for this
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