This is a Comet CA-2X4SR wide band antenna. I have it mounted on a sawed off metal stand with 4 ground radials. It worked well for Ham/GMRS/MURS. I used this setup when I lived for years in an apartment where outdoor antennas were prohibited. https://cometantenna.com/wp-content/uploads/2013/09/CA-2x4SR.pdf
The SWR scan was done with the antenna on an SO-239 mount with a tri-magnet base on a sheet metal ground plane for testing. The antenna is a bit sensitive to the type of ground plane used, flat sheet metal - magnet mount - ground radials etc. I would recommend anyone using the antenna to test it in various locations and use the one that results in the best match over the frequency range of interest.
wrtq652 reacted to Lscott for a gallery image, CA-2x4SR
