--- product_id: 74469829 title: "RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio" brand: "fumei" price: "¥35830" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/74469829-rs-50-digital-swr-watt-meter-vhf-uhf-125-525mhz store_origin: JP region: Japan --- # Backlit LCD for clear readings anytime 125-525 MHz wide frequency range Dual power options: AAA batteries or USB RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio **Brand:** fumei **Price:** ¥35830 **Availability:** ✅ In Stock ## Summary > 📡 Stay ahead on every frequency — measure like a pro, anytime, anywhere! ## Quick Answers - **What is this?** RS-50 Digital SWR/Watt Meter VHF/UHF 125-525MHz 120W for Two-Way Radio by fumei - **How much does it cost?** ¥35830 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/74469829-rs-50-digital-swr-watt-meter-vhf-uhf-125-525mhz) ## 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 - • **User-Centric Design:** Backlit LCD and intuitive controls ensure seamless operation even in low light. - • **Instant SWR & Watt Insight:** One-button display of forward/reflected power and VSWR ratio keeps you in control. - • **Permanent Connection Ready:** Ultra-low insertion loss (≤0.3dB) lets you keep it connected without signal compromise. - • **Precision Frequency Mastery:** Covers VHF/UHF bands from 125 to 525 MHz for versatile radio monitoring. - • **Effortless Power Flexibility:** Operates on standard AAA batteries or via USB for uninterrupted use on the go. ## Overview The RS-50 Digital SWR/Watt Meter is a compact, lightweight device designed for two-way radio enthusiasts and professionals. It accurately measures forward and reflected power, as well as VSWR, across a broad 125-525 MHz frequency range with up to 120W power handling. Featuring a backlit LCD for easy reading, flexible power options including AAA batteries or USB, and a low insertion loss design, it ensures reliable, continuous monitoring with minimal signal disruption. Perfect for VHF/UHF radio setups, it combines precision, convenience, and durability in one sleek package. ## 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) ## 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 | |---------------|-------| | Additional Features | Uhf | | Asin | B0749QHDDW | | Best Sellers Rank | #552 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 (127) 4.3 out of 5 stars | | Impedance | 50 ohm | | Item Dimensions D X W X H | 3.07"H | | Item Weight | 220 g | | Manufacturer | DotDotTech | | Model Number | RS 50 | | Number Of Channels | 2 | | Number Of Packs | 1 | | Tuner Type | UHF, VHF | | Unit Count | 1 Count | | Upc | 680491660800 | | 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 ![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 on Reviewed in the United States 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 on Reviewed in the United States 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 great. *by on Reviewed in the United States March 10, 2018* I wish it had an internal rechargeable battery and turned off automatically. Otherwise, works great. ## 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? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/74469829-rs-50-digital-swr-watt-meter-vhf-uhf-125-525mhz](https://www.desertcart.jp/products/74469829-rs-50-digital-swr-watt-meter-vhf-uhf-125-525mhz) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-17*