--- product_id: 74469829 title: "Youmei RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio" brand: "fumei" price: "VT38974" currency: VUV in_stock: true reviews_count: 13 category: "Fumei" url: https://www.desertcart.vu/products/74469829-youmei-rs-50-digital-swr-watt-meter-vhf-uhf-125 store_origin: VU region: Vanuatu --- # Backlit LCD for clear readings 125-525 MHz wide freq. range Dual power: AAA batteries or USB Youmei RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio **Brand:** fumei **Price:** VT38974 **Availability:** βœ… In Stock ## Summary > πŸ“‘ Master your signal game with precision and ease! ## Quick Answers - **What is this?** Youmei RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio by fumei - **How much does it cost?** VT38974 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/74469829-youmei-rs-50-digital-swr-watt-meter-vhf-uhf-125) ## Best For - fumei enthusiasts ## Why This Product - Trusted fumei brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact & Lightweight:** At just 220g and pocket-sized, it’s the perfect companion for on-the-go radio pros. - β€’ **User-Friendly Backlight:** Auto-off backlight saves battery, instantly reactivates on transmission for effortless night or low-light operation. - β€’ **Versatile Power Options:** Run on standard AAA batteries, rechargeables, or convenient USB power for field or mobile use. - β€’ **Low Insertion Loss Design:** Permanent connection friendly with minimal signal loss (≀0.3dB) to keep your setup efficient. - β€’ **Instant Multi-Read Display:** Simultaneously view Forward, Reflected Power & VSWR with one pushβ€”no toggling needed. ## Overview The Youmei RS-50 Digital SWR/Watt Meter covers a broad 125-525 MHz frequency range, delivering accurate forward/reflected power and VSWR readings on a crisp backlit LCD. Designed for two-way radio enthusiasts and professionals, it supports multiple power sources including AAA batteries and USB, features a low insertion loss for permanent setups, and offers a compact, lightweight form factor ideal for field or mobile use. ## Description Specifications: Frequency range: 125-525 Mhz Center calibrated: 145Mhz(VHF) 435Mhz(UHF) Power range:0-120W +/- 5% Impedance: 50 ohm Connector: M-J(So-239 (M)) Dimension: 70W x 78H x 30D mm Net Weight: 220g Measurement: 1. Apply output of transceiver to "TX" and antenna or load to "ANT". 2. "POWER" on for ready to use. 3. LCD display show simultaneously "Fwd/Ref Power and SWR". 4. For back-light, please switch "LIGHT" to "ON". 5. No function in 30 seconds, the backlight will automatically off. 6. Once PTT launched, the backlight will be back. Battery installation: 1. Remove the black screw from the cover to open the rear panel. 2. Install 2 pcs "AAA" batteries. 3. Can be used with alkaline or Ni-Ca, Ni-MH rechargeable battery. 4. This unit has no built-in charging circuitry. 5. Be sure to correct polarity of battery. 6. Remove the battery if the unit won't be used in long period. Packages includes: 1 x SWR/Watt Meter(no batteries) Review: Very easy to use since it is digital. - 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. Review: Battery is not worth it; device as expected - 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. ## Features - Forward/Reflected/VSWR ration in one push button - LCD backlight display for easy reading - Convenient control layout for easy operation - Powered by two AAA batteries/rechargeable batteries or external USB port - Low insertion loss(0.3dB or lower) structure allows it to be connected permanently ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0749QHDDW | | Additional Features | Uhf | | Best Sellers Rank | #1,503 in Portable FRS Two-Way Radios | | Brand | Fumei | | Built-In Media | SWR/Watt Meter | | Color | Black | | Compatible Devices | Two-way radios, headsets, earpieces | | Connectivity Protocol | USB | | Customer Reviews | 4.3 4.3 out of 5 stars (126) | | Frequency Range | 125-525 MHz | | Impedance | 50 Ohms | | Item Dimensions D x W x H | 3.07"H | | Item Weight | 220 Grams | | Manufacturer | DotDotTech | | Model Number | RS 50 | | Number of Channels | 2 | | Tuner Type | UHF, VHF | | UPC | 680491660800 | | Unit Count | 1.0 Count | | Voltage | 3 Volts | | Warranty Description | 1 year repair service | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Fumei - **Color:** Black - **Frequency Range:** 125-525 MHz - **Included Components:** SWR/Watt Meter - **Item Weight:** 220 Grams - **Number of Channels:** 2 - **Product Dimensions:** 3.07"H - **Special Feature:** Uhf - **Voltage:** 3 Volts - **Water Resistance Level:** Waterproof ## Images ![Youmei RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio - Image 1](https://m.media-amazon.com/images/I/61IaTEKWwhL.jpg) ## Questions & Answers **Q: Does this have a metal housing? has anyone compared it to the mfj-847?** A: Yes it has a metal housing and it works perfectly. It looks as if it is manufactured by the same company as the MFJ-847. I am very pleased with this unit. **Q: What country is it made in?** A: Made in china. Works good, but eats batteries. Would not buy it again. **Q: Will this work for dmr (digital) vhf frequencies?** A: Yes **Q: Will your standard PL259 antenna end screw on this?** A: Yes, this unit can be connected to standard PL259 antenna ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very easy to use since it is digital. *by S***W on December 10, 2019* 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. ### ⭐⭐⭐⭐⭐ Battery is not worth it; device as expected *by S***K on October 30, 2022* 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. ### ⭐⭐⭐⭐⭐ Works as expected and handy to have for mobile or portable operation. *by J***3 on June 7, 2018* Works just fine. Handy to use, especially for mobile and or portable operation. (Don't forget to have on hand or buy a short cable for use between it and the radio.) The backlight is a nice feature, but that will chew up the batteries. Compared readings with my BIRD 43 (on VHF only) and both agreed! As with all products of this nature the instructions are not worth anything. I really would like to know the intended use of the micro USB(?) port on the side. Can it be used to power the device? Is it intended to solely recharge a battery if a rechargeable battery is even available? Is it a USB interface for a software application? Curious minds will be dissecting this unit to answer these questions and more unless you can tell me. ## Frequently Bought Together - Youmei RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio - Superbat PL-259 Jumper Cable UHF (Pl259) Male to Male Low Loss Digital RG58 Coax Cable (12 Inch RG58) for HAM & CB Radio,Antenna Analyzer,Dummy Load,SWR Meter 2-Pack - Superbat UHF Male PL-259 to UHF Male PL-259 Low Loss Digital Coax UHF Jumper Cable (2ft RG58) for HAM & CB Radio,Antenna Analyzer,Dummy Load,SWR Meter --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vu/products/74469829-youmei-rs-50-digital-swr-watt-meter-vhf-uhf-125](https://www.desertcart.vu/products/74469829-youmei-rs-50-digital-swr-watt-meter-vhf-uhf-125) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-06-06*