--- product_id: 69765554 title: "SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder" brand: "hksunkin" price: "S/.397" currency: PEN in_stock: true category: "Hksunkin" url: https://www.desertcart.pe/products/69765554-surecom-sf401-plus-frequency-counter-for-radio-transceiver-ctccss-dcs store_origin: PE region: Peru --- # 27MHz-3000MHz wide freq range Built-in Li-ion battery with LED charging TCXO tech for ±2.5ppm frequency stability SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder **Brand:** hksunkin **Price:** S/.397 **Availability:** ✅ In Stock ## Summary > 📡 Stay ahead on every frequency — decode the invisible! ## Quick Answers - **What is this?** SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder by hksunkin - **How much does it cost?** S/.397 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/69765554-surecom-sf401-plus-frequency-counter-for-radio-transceiver-ctccss-dcs) ## Best For - hksunkin enthusiasts ## Why This Product - Trusted hksunkin brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Vibrant Color Display:** 240x320 LCD with adjustable dimming for any lighting - • **Precision TCXO Oscillator:** Temperature-compensated crystal ensures rock-solid accuracy - • **Ultra-Wide Frequency Mastery:** Covers 27MHz to 3000MHz for VHF, UHF & HAM pros - • **Intuitive Four-Button Control:** Effortless operation with minimal learning curve - • **Compact & Rugged IP66 Waterproof:** Handheld size built to endure your field adventures ## Overview The SURECOM SF401 Plus is a professional-grade frequency counter designed for radio transceiver enthusiasts and managers who demand precision. Featuring a broad 27MHz to 3000MHz range, it supports VHF, UHF, HAM, and DMR signals with a temperature-compensated crystal oscillator for ±2.5ppm accuracy. Its intuitive four-button interface, vibrant color display, and IP66 waterproof rating make it a reliable, portable tool for field and lab use. Powered by a built-in rechargeable Li-ion battery with charging indicators, it ensures you never miss a beat in signal monitoring. ## Description Powerful signal strength indicator to measure walkie talkies' continuous carrier signal frequency for wireless enthusiasts Features: * CTCSS/DCS Decoder * LCD Dim level setting * Frequency digital 0.000 or 0.0000 * Work by TCXO(Temperature Compensate X'tal (crystal) Oscillator) 2～2.5ppm * Color Display 240x320 * Build-in Li-ion battery * Only four-button control means easy to use * Small size allows hand holding. * Auto power off 1-9minutes * Charging battery LED indicator Package Contents: 1x SF401 PLUS Frequency Counter 1x UHF Antenna 1x English User Manual 1x USB charger cable 1x USB AC adapter 100-240V Note: Steps of If Frequency Counter Cannot Check VHF Frequency 1) Swtich the ATT button into left hand side. 2) Then change the antenna into VHF or Dual band, as customer are using UHF antenna, but checking VHF band. ## Features - Designed for counting continuous wave signal from Two-way Radio - Easy ranges to choose and cover almost all the frequency - Include frequency areas such as 2m HAM radio, all VHF and UHF (Frequency range: 27Mhz-3000Mhz) - DMR Radio signal frequency counter - Easy battery level ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XCF9PPJ | | Additional Features | Wireless | | Best Sellers Rank | #2,264 in Portable FRS Two-Way Radios | | Brand | HKSUNKIN | | Built-In Media | SF401 PLUS Frequency Counter, UHF Antenna, English User Manual, USB charger cable, USB AC adapter 100-240V | | Color | Black | | Compatible Devices | VHF, UHF, DMR devices | | Connectivity Protocol | VHF, UHF, DMR | | Customer Reviews | 4.2 4.2 out of 5 stars (115) | | Frequency Range | 27Mhz-3000Mhz | | Item Weight | 8.4 Ounces | | Manufacturer | HKSUNKIN | | Mfr Part Number | 9999999919 | | Model Number | SF401 | | Number of Batteries | 1 Lithium Ion batteries required. (included) | | Number of Channels | 1 | | Talking Range Maximum | 5 Miles | | Tuner Type | UHF, VHF | | UPC | 744370308266 | | Unit Count | 1.0 Count | | Voltage | 3.7 Volts | | Water Resistance Level | Waterproof | | Waterproof Rating | IP66 | ## Product Details - **Brand:** HKSUNKIN - **Color:** Black - **Frequency Range:** 27Mhz-3000Mhz - **Item Weight:** 8.4 Ounces - **Number of Batteries:** 1 Lithium Ion batteries required. (included) - **Number of Channels:** 1 - **Special Feature:** Wireless - **Talking Range Maximum:** 5 Miles - **Voltage:** 3.7 Volts - **Water Resistance Level:** Waterproof ## Images ![SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder - Image 1](https://m.media-amazon.com/images/I/61E8Yx+7QWL.jpg) ![SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder - Image 2](https://m.media-amazon.com/images/I/51i6BzJhuRL.jpg) ![SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder - Image 3](https://m.media-amazon.com/images/I/51gI2NMfh3L.jpg) ![SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder - Image 4](https://m.media-amazon.com/images/I/51A6MITytaL.jpg) ![SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder - Image 5](https://m.media-amazon.com/images/I/51s7SIqmhpL.jpg) ## Questions & Answers **Q: does the product give the transmiting freqs to my recieveing freqs** A: Yes it will only read transmiting freq. And your squelch tones but you’ll need to find the receive frequency if your using a repeater. **Q: can i use this to find hidden cameras and hidden microphones?** A: i don't know but it pick up WiFi and it may you would have to know what the range is **Q: Can this also detect output wattage of a handheld?** A: No. To measure wattage will require direct connection to the transmitter via a cable. **Q: How far apart between radios can you get?** A: HAND HELD AS RANGE AS RESULTS CHANGE WITH WITH INCHES. ## Frequently Bought Together - SURECOM SF401 Plus Frequency Counter for Radio Transceiver CTCCSS/DCS Decoder - BTECH PC03 FTDI Universal Plug & Play USB Programming Cable for BTECH, Baofeng, Kenwood Radios - Compatible with UV-5R, BF-F8HP, GMRS-V2, UV-82HP & More - Easy Setup, No Driver Needed - TIDRADIO Ham Radio Wireless Programmer Adapter APP and PC Program for Baofeng UV-5R and Multiple Models No Driver Issues Instead of Program Cable --- ## 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.pe/products/69765554-surecom-sf401-plus-frequency-counter-for-radio-transceiver-ctccss-dcs](https://www.desertcart.pe/products/69765554-surecom-sf401-plus-frequency-counter-for-radio-transceiver-ctccss-dcs) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-06-18*