> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # RF Explorer 4G Combo PLUS - Slim (Seeed Studio) **Type:** Product page · **SKU:** SS114992146 · **Brand:** [Seeed Studio](https://core-electronics.com.au/brands/seeed-studio-australia) **Page:** https://core-electronics.com.au/rf-explorer-4g-combo-plus-slim-seeed-studio.html ([markdown](https://core-electronics.com.au/rf-explorer-4g-combo-plus-slim-seeed-studio.html.md)) RF Explorer 4G COMBO+ is a powerful Spectrum Analyzer, covering the full range starting at 50KHz up to 4GHz with no gaps or limitations. A future firmware license feature will allow it to expand the range up to 5.1GHz. ## Pricing - **Price:** $529.95 (inc GST) — $481.77 AUD, exc GST - **Quantity discounts:** 3+ $462.50 (exc GST) · 5+ $448.05 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 18 and Aug 20. ## Restrictions **For use in Australia** - Operate only in bands and with settings that are permitted for your location and application. Check this product’s supported frequencies in the description/specs. - If you intend to operate outside shared/licence‑exempt conditions (e.g. in other bands, at higher power, with high‑gain antennas, or extended duty cycles), you must have the appropriate authorisation. **For use in other regions** - Follow the spectrum rules for your country/region and select frequencies and settings accordingly. A declaration of use will need to be submitted during checkout. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SS114992146:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SS114992146:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description RF Explorer 4G COMBO+ is a powerful Spectrum Analyzer, covering the full range starting at 50KHz up to 4GHz with no gaps or limitations. A future firmware license feature will allow it to expand the range up to 5.1GHz. When compared to the standard 3G Combo model, the new SLIM design offers an outstanding robust enclosure with a strong metallic body and shiny varnished paint, additional frequency coverage, and power sensitivity, a more convenient USB connector on the side and larger internal battery capacity. **What is an RF Explorer Spectrum Analyzer?** An RF Explorer Spectrum Analyzer is a special device designed to detect very sensitive signal radiation and identify signal interference, tune antenna setups, detect signal leakage and find hidden bugs, among many other applications. The combination of small size, great sensitivity, and robust design makes it the ideal instrument to carry on for indoor and outdoor measurements. When connected to a computer, it can be controlled by free software available for download with stunning high-resolution graphics, data storage, and reply features. **How RF Explorer Works?** For introductory details and quick start guide, please visit www.rf-explorer.com/start For best handling work at the desk, we recommend the [RF Explorer Holder SLIM](https://core-electronics.com.au/rf-explorer-slim-holder-seeed-studio.html) For best results detecting near field signal sources or interferences, we recommend the [RF Explorer Near Field Antenna Kit](https://core-electronics.com.au/rf-explorer-near-field-antenna-kit-seeed-studio.html) Tip: To learn more about the RF Explorer product family, don't forget to check Seeed Studios blog [Introducing RF Explorer Spectrum Analyzer Product Family](https://www.seeedstudio.com/blog/2019/08/01/introducing-rf-explorer-spectrum-analyzer-product-family/). **Features** - Internal LNA amplifier and selectable attenuator for additional power range handling. - Low-frequency support from 50KHz covering LF, MF, HF, VHF, and UHF - High-frequency support covering all ranges up to 4GHz with no gaps. - New HELP and SET buttons to improve user interface and PRESET configuration selection with 2-clicks - Ideal choice for all usable HAM bands. - Pocket size and lightweight - Solid metal case - Spectrum Analyzer mode with Peak Max and Hold, Normal, Overwrite and Averaging modes - High capacity internal Lithium battery for 10hs+ of continuous run, rechargeable by USB - Multi-platform Windows/Linux/MacOS Open Source software and API libraries **Specifications** - Frequency band: - Left connector: 0.05 – 960MHz - Right connector: 240 – 4000MHz - Frequency span in a single sweep: 2 – 960MHz - Internal selectable LNA 25dB gain - Internal selectable Attenuators 30dB and 60dB - Wifi Analyzer for the 2.4GHz band - Graphics LCD 128x64 pixels, great visibility outdoors - Backlight for great visibility indoor - Internal Lithium-Ion 1800mA/h rechargeable battery - Standard SMA 50 ohms connectors - Wideband 144/433MHz dual band telescopic antenna included - UHF 400-900MHz rubber duck articulated antenna included - 2.4GHz whip antenna included - Amplitude resolution: 0.5dBm - Dynamic range: -125dBm to 10dBm - Absolute Max input power: +30dBm - Average noise level (typical LNA): -125dBm - Frequency stability and accuracy (typical): +-1.0ppm - Amplitude stability and accuracy (typical): +-3dBm - Frequency resolution: 1Khz - Resolution bandwidth (RBW): automatic 2.6Khz to 600Khz - Support included for Windows, Linux and MacOS X **Applications** - RF Spectrum Analysis for FM, TV and DTV, ISM, RFID, GSM, 4G/5G, IoT, GPS, Bluetooth - WiFi analysis and fine-tuning - Interference hunting - EMC pre-testing - RF device tuning (with Signal Generator working as Tracking SNA): Check this link for more details **Parts List** - 1 x Spectrum Analyzer - 1 x Mini USB cable - 1 x Dual band 144/430MHz Telescopic antenna - 1 x UHF 400-900Mhz antenna - 1 x 2.4GHz whip antenna - 1 x EVA case **Downloads** - Specifications - Getting Started - Software Options - Downloads - Articles and FAQ ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/r/f/rf_4g_1.jpg)