SKU: 85864955581

RF Explorer 4G Combo Plus Slim Spectrum Analyser

Sale price$172.09 Regular price$191.21
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

RF Explorer 4G Combo Plus Slim Spectrum AnalyserWhen compared to the standard 6G Combo model, the new SLIM design offers an outstanding robust enclosure with a strong metallic body and shiny varnished paint, a more convenient USB connector on the side, and a larger internal battery capacity. 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

When compared to the standard 6G Combo model, the new SLIM design offers an outstanding robust enclosure with a strong metallic body and shiny varnished paint, a more convenient USB connector on the side, and a larger internal battery capacity.

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

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 results detecting near field signal sources or interferences, we recommend the RF Explorer Near Field Antenna Kit

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

Part 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

Resources

Compliance

All RF Explorer models are complaint with FCC as well as CE regulations.

All RF Explorer Wideband models have been certified under EN/IEC61236 and EN/IEC61000.

All RF Explorer models are RoHS compliant

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 85864955581

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New York, US
★★★★★ 4
Fit well and stay up
Size: Large, Color: (299) City Khaki / City Khaki / White
They're a little thin, so good mainly for warmer months. But they fit very well and I've not experienced any slippage
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Reviewed in the United States on March 17, 2026
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Gustavo Garcia
Belleville, US
★★★★★ 5
Llego a tiempo
Size: X-Large, Color: (001) Black / Black / Castlerock
Bien
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Reviewed in the United States on April 28, 2026
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ViperMageEx
Boise, US
★★★★★ 3
Low quality socks.
Size: Large, Color: (001) Black / Black / Castlerock
I have been buying Under Armour undergarments for years and have noticed a steady decline in quality. These socks are no different. I purchased another six packs of very similar styled Under Armour socks in 2023 and recently they have started wearing out. Those socks are no longer available for reorder, but these extremely similar socks were so I ordered them. The quality difference is obvious just by looking at and feeling them. They are more of a faded black/brown than the black pictured or the black that the three year old socks still are. The material is completely different and feels lighter. When wearing them they already feel like they are bunching up in my shoes, which the old ones never did. I do not expect these to last even a year and will not buy them again.
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Reviewed in the United States on March 29, 2026
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Regina Hall
Alexandria, US
★★★★★ 5
Happy Son
Size: Large, Color: (001) Black / Black / Castlerock
My sons loves them. They are all he wears.
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Reviewed in the United States on April 19, 2026
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J
Massapequa, US
★★★★★ 5
Perfect thickness and soft feel.
Size: 6-10, Color: Halo Gray/Assorted
Why did you pick this product vs others?: Love theses socks.  It's hard to find socks which won't get pulled down by athletic shoes.  These stay put.
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Reviewed in the United States on June 29, 2025

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