Mit0s1s Posted January 1, 2016 Share Posted January 1, 2016 been really loving my hackrf-one, but I want to start messing with building some antenna's. I want to find an swr meter to tune the antenna for the Freq's im using. Any suggestions? Quote Link to comment Share on other sites More sharing options...
KD6W Posted January 4, 2016 Share Posted January 4, 2016 Which frequency are you looking to measure? The lower the cheaper... Quote Link to comment Share on other sites More sharing options...
Mit0s1s Posted February 2, 2016 Author Share Posted February 2, 2016 some how forgot about asking this question here, basically at the time of the post I was messing with 300-315 Mhz but now I was wondering if there is a way to measure for a wide variety of freqs, with sdr we can go all over the place. but there are only a few freq ranges that have common antenna available, so I would like to build my own for many different ranges. Quote Link to comment Share on other sites More sharing options...
bored369 Posted February 2, 2016 Share Posted February 2, 2016 Check out the discone antenna design http://www.tinkersoc.org/2013/01/software-defined-radio/ There's one on amazon that covers the full range of the rtl-sdr. As far as covering everything the hackRF does it doesn't look like that really possible (i could be wrong still very much noob on this stuff). From what I've gathered so far you need to make an antenna for the frequency range that you are interested in and has to do with the mathematics of the radio waves and your antenna style/dimensions. http://www.rtl-sdr.com/tag/antenna/ is a good feed to check out for different ones http://www.amazon.com/Antenna-Theory-Analysis-Design-Edition/dp/047166782X is a book that comes highly recommended on learning more about the subject, i think from this video Quote Link to comment Share on other sites More sharing options...
Mit0s1s Posted February 3, 2016 Author Share Posted February 3, 2016 thanks for the links, ya that's exactly my point, the Hackrf has way too much of a range to use even few antenna, so I want to make new ones for the different ranges that I am currently messing with. Too expensive and hard to find for allot of the freqs.I am definetly not an expert but I do know how much a of a difference that tuning your antenna for the freq makes on CB radios, I would love to mess with tuning for the hackrf freqs for each antenna. Quote Link to comment Share on other sites More sharing options...
bored369 Posted February 3, 2016 Share Posted February 3, 2016 I had found a really good antenna site and looks like i forgot to save it :/ here's some interesting ones that seem to have a ton of information on making them tho: http://www.packetradio.com/ant.htm http://www.dxzone.com/catalog/Antennas/ If I come across the site again I'll post back here again Quote Link to comment Share on other sites More sharing options...
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