Showing posts with label SWR. Show all posts
Showing posts with label SWR. Show all posts

Friday, August 24, 2018

Ham Radio HT 2m Antenna Comparison

AQRP 8KHz to 440MHz Vector Impedance Analyzer kit #25
-----
An OFC Dipole antenna was recently paid-forward to me.  My Elmer friend let me borrow an antenna analyzer to check it out.  I soon learned that the analyzer was actually put together from a kit.  It is a very nice package with a sturdy case, touch screen interface, and an easy to understand user interface.  Go to this page and see the AQRP 8KHz to 440MHz Vector Impedance Analyzer kit #25 for more details.  It's well documented and a very slick package. 
 
 
-----
Right away I wanted to play with the analyzer and decided to sweep a few 2m hand held radio antennas as a test (results below). 
It's interesting how much flatter the VSWR curve is with the Nogoya NA-771 VHF/UHF aftermarket duckie.  Also, I never tuned the DIY 2m Tape Measure Yagi but just following the build instructions carefully seemed to yield good results.
 -----
 

-----

-----


-----

-----
And, just for grins we swept a DIY simple wire dipole that was cut for 20m which is only use for Rx with a SDRPlay RSP1A. Our placement for the dipole is marginal and it works equally marginal on 20m and 40m.   FWIW, here are the results:

-----