Youmei RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio

BON PRODUIT

Got this for a fixed mobile install. Picked up a USB to 12v converter and USB cable so I could wire into the car's accessory power. SWR seems to work from my antenna swaps (various antenna on same NMO mount) and I did get better readings on some antenna than others. Not bench tested. Light does go out after some bit with no TX. Does not light or meter any RX. Used 3M Dual Lock to mount so I could remove as needed and use battery's as a backup. As others said battery life alone is goof for quick field testing. Exactly what I was expecting; Perfect size and display for my use.

THis works exactly as hoped and the price was right. I only needed to tune a few antennas and it worked well

This meter is very easy to use. Just key up and read the Power, Reverse Power and VSWR simultaneously. The meter does not have to be switched to read the power and VSWR like with an analog Power/SWR meter that has only one meter, and there is no parallax error like with a cross-needle Power/SWR meter. The backlight works well. The instructions say that USB, alkaline, NiCad or NiMH cells can be used, but I have found that the battery level gauge reads low with fully charged NiMH cells. Therefore, I am using AA alkaline cells, which give a full reading when they are new. The power can be supplied with a USB cable also, but for me that is just one extra cable, so am using using battery power. This meter looks exactly like an MFJ model, and I have a feeling they are both made by the same manufacturer.

My first SWR with a battery. Batteries are the weakest part of any device that has one.