Comet Original CAA-500 Mark II Standing Wave Analyzer 1.8-500MHz SWR & Impedance Simultaneously

Well worth the money. It came damaged in shipping and return and replacement was easy/Peazy. Thanks Amazon

Purchased this to replace a defunct MFJ UHF unit. This makes the MFJ look and feel like a toy. Much easier to use and built like a brick. Typical High Quality Japan construction. The MFJ gave good service, but there is no comparison in build quality. The graphing is nice, if a little small. Only gripe is I wish I could download the graphs. Comes with a charging cable if you use NiMh but you have to supply the Power source. Not an issue for me. There is an SO-239 for use up to 300 MHz, and an N connector for 300 to 500 MHz. I always carry adaptors for both connectors as you never know what you will find in a remote location. I just leave them threaded on the unit.

Ive likely tuned hundreds of antennas SWR over my year using the old method of checking each end of a band and adjusting a bit to center the dip. I looked long and hard at the cheap $30 and $40 meters and Ive had so much bad luck with them I thought about getting something better ... and ended up getting WAY BETTER! The meter is so simple to use. You select the correct output 2M and above or 2M and below and connect the antenna up to the meter. Twist one knob to select the band and the other to pick the frequency inside that band and the cross needles indicate the SWR and the impedance of the antenna. Press a button and the meter will sweep the band displaying the slope on the small color screen. With HF bands this is very handy to see just what the SWR is across a wide number of frequencies. Tuning dual and tri-band VHF/UHF antennas on my Jeep was simple. The only thing missing is a USB port to off load screen captures of the SWR plots.

The Comet CAA-500M 2 .Works great showed me the problems that I had. Now I know what needs to be fixed. Larry KD8ULC

Great product. I analyzed an OCF wire that is designed to operate on all bands from 80 through 6 meters, and I can see exactly where resonance occurs and both the resistive and reactive components of impedance. The only negative is the screw heads that protrude on the back side of the box. This could be corrected easily and to me suggests an attitude of indifference to the concerns of customers.

No doubt on Japanese quality. This thing is extremely easy to use.

I needed to tweak three VHF/UHF antennas (LPDA beam, dis-cone & 50 MHz loop). This device makes it very simple to sweep the antennas. The dis-cone covered 50-500+ MHz and the Comet made it a snap to check it out. Recommended.

Works great for designing and building your own antennas. Tells you what youre doing right and what youre doing wrong, in real time. It can pay for itself many times over if you use it to build and tune antennas to sell. The only con is that it doesnt come with a nice protective case.