Review: Surecom SW-112 HF VSWR and power Meter $33

Amazon Affiliate Link: https://amzn.to/3M5xwpB
Price as reviewed: $33

Mcbazel Surecom SW-112HF 1.5-60MHz 120W V.S.W.R. & Power Meter

This is an inexpensive analog forward/reverse power and VSWR meter. It is completely analog and doesn't require any power to operate, but does accept a 5-12 volt input for the LED meter lights and includes a USB-A to barrel connector to power the lamp from a rectangular USB-A port.

It has 3 basic modes (Forward Watts, Reverse Watts, and VSWR reading) + a forth "calibrate SWR to max transmit power" setting where you adjust the dial while transmitting to calibrate the VSWR part of the meter.

There are multiple switches you need to flip between different states to move between the modes, but there is a silkscreen set of arrows on the front that makes it relatively easy to do (if you read the 1 page manual first).

Accuracy wise, it says my "100 watt" transmitter puts out 110 watts (with the dial pegged) and 10 watts (at min setting) so it is probably accurate to at least 10% [It's certainly possible that my 30 year old radio is putting a little more than 100 watts out...]

An SWR reading on an antenna was close to that given by my NanoVNA.

If you are really concerned with perfect accuracy, you will probably need to pay more than $33, but this meter does a good job giving you a ballpark estimate, detect a sudden SWR spike due to a break in your antenna, test/confirm a radio at a swap meet is transmitting correctly (with a dummy load or antenna attached please!), etc.

I found the white background meter perfectly legible even in dim lighting, and you really only need to plug in the lamp if you use it in the dark / at night without lights.

Видео Review: Surecom SW-112 HF VSWR and power Meter $33 канала Jay Summet