Just wanted to show a project I completed a while ago.
Uses an AD9850 signal generator, 2 unobtanium expensive diodes, an arduino and a slew of miscelaneous passives.
I had it connected to this ****-o-rama mobile antenna on my balcony.
And this is the SWR curve it reported. Matches with the SWR I measured with my proper shortwave SWR meter. Was really happy with it.
And lastly, here is the curve it shows connected to a full-size ground-plane CB antenna!
Inspiration to build it, the schematic, and source code was found here: http://www.dg7eao.de/arduino/antennen-analysator/ (warning: GERMAN! )
In total, I spent about £10 on the signal generator, already had the arduino, spent £5 on the diodes (god above ), and another 5 on the rest of the passives from a local electronics shop. Pretty cheap overall, and works amazingly.
DIY 1-30 Mhz Graphic Antenna SWR Analyser
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DIY 1-30 Mhz Graphic Antenna SWR Analyser
30-Tango-Mike-003
Good Christian Boys: Midland G7 XTR "Street-Legal" PMR 3-watter - Kenwood UBZ-LJ8 PMR446 - Intek FM548SX (With Homogolation boys )
Naughty Boys: Philips 25W FM1100 UHF w/PA4DEN - Baofeng UV5RA, Superstar 360FM (My good one!) w/ CTE 747 100W Amp
Good Christian Boys: Midland G7 XTR "Street-Legal" PMR 3-watter - Kenwood UBZ-LJ8 PMR446 - Intek FM548SX (With Homogolation boys )
Naughty Boys: Philips 25W FM1100 UHF w/PA4DEN - Baofeng UV5RA, Superstar 360FM (My good one!) w/ CTE 747 100W Amp
- andymuza
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- Joined: 05 Oct 2014, 22:19
Re: DIY 1-30 Mhz Graphic Antenna SWR Analyser
Excellent work, well done. I will have a look at that link, I can see a little winter project coming on.
I will not be commanded, I will not be controlled.
n+1 the formula for working out how many radios you need with n being the current amount.
n+1 the formula for working out how many radios you need with n being the current amount.