---
product_id: 120093578
title: "RFSPACE TSA400 Ultra Wide Band Passive Antenna 375 MHz - 6 GHz for UWB TX/RX SDR SIGINT EMC & FCC Test - Vivaldi Antenna"
brand: "rfspace"
price: "€ 428.56"
currency: EUR
in_stock: true
reviews_count: 3
category: "Rfspace"
url: https://www.desertcart.gr/products/120093578-rfspace-tsa400-ultra-wide-band-passive-antenna-375-mhz-6
store_origin: GR
region: Greece
---

# Flat gain & low VSWR for clean signal 375 MHz - 6 GHz ultra-wideband coverage Low ringing impulse response for precise detection RFSPACE TSA400 Ultra Wide Band Passive Antenna 375 MHz - 6 GHz for UWB TX/RX SDR SIGINT EMC & FCC Test - Vivaldi Antenna

**Brand:** rfspace
**Price:** € 428.56
**Availability:** ✅ In Stock

## Summary

> 📡 Capture Every Signal, Own Every Spectrum

## Quick Answers

- **What is this?** RFSPACE TSA400 Ultra Wide Band Passive Antenna 375 MHz - 6 GHz for UWB TX/RX SDR SIGINT EMC & FCC Test - Vivaldi Antenna by rfspace
- **How much does it cost?** € 428.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/120093578-rfspace-tsa400-ultra-wide-band-passive-antenna-375-mhz-6)

## Best For

- rfspace enthusiasts

## Why This Product

- Trusted rfspace brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built on Low-Loss PCB Tech:** Maximizes signal integrity with advanced printed circuit board materials
- • **Precision-Tuned for Clarity:** Individually tested and tuned to ensure flat gain and minimal signal distortion
- • **Versatile Signal Intelligence:** Ideal for SIGINT, EMC testing, spectrum analysis, and direction finding
- • **Engineered for Pulse Perfection:** Non-dispersive design delivers ultra-clean impulse response with low ringing
- • **Seamless Ultra-Wideband Mastery:** Covers an expansive 375 MHz to 6 GHz range for unmatched SDR versatility

## Overview

The RFSPACE TSA400 is a premium ultra-wideband passive Vivaldi antenna engineered for 375 MHz to 6 GHz coverage. Built on low-loss PCB material and individually tuned, it delivers flat gain, low VSWR, and a clean impulse response ideal for SDR, SIGINT, EMC testing, and spectrum analysis. This antenna is a top-tier choice for professionals demanding precision and broad frequency performance.

## Description

The TSA400 is a new RFSPACE Ultra-Wideband (UWB) passive tapered slot antenna. These antennas are built on very low loss Printed Circuit Board material. Each antenna is guaranteed to cover the 400 MHz to 6 GHz + continuously. Each antenna is individually tested and tuned to cover the complete band. This is the ultimate broadband antenna for wideband SDRs. These antennas also exhibit a very clean impulse response with low ringing.

Review: Meets Spec and exceeds expectations. - Measured antenna transfer function using 2 antennas. Found it to be non-dispersive meaning suitable for UWB pulse applications. Verified RFSPACE data for gain and VSWR. Altogether an accurately specified and technically worthy product at a reasonable price point. happy to have found this supplier.
Review: Incorrect Dimensions - I am not sure where desertcart posted their dimensions from! The actual size of this antenna in the two largest dimensions is 19.5" x 15.4" not the product dimensions desertcart posted of 9.25 x 0.2 x 7.5 inches. This is a beast of a size; I understand the physics. No datasheet available on RF Space.

## Features

- Ultra Wideband
- Flat gain / VSWR and impulse response
- Radio communications reception
- EMC testing, Spectrum analysis & Direction finding
- radio signal reception

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07NS8M3Y1 |
| Best Sellers Rank | #1,516 in Radio Antennas |
| Customer Reviews | 4.1 4.1 out of 5 stars (6) |
| Date First Available | April 15, 2019 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.58 ounces |
| Item model number | TSA400 |
| Manufacturer | RFSPACE |
| Product Dimensions | 9.25 x 0.2 x 7.5 inches |

## Product Details

- **Antenna:** Radio
- **Brand:** RFSPACE
- **Color:** Silver
- **Impedance:** 50 Ohms
- **Manufacturer:** RFSPACE
- **Maximum Range:** 10000 Meters
- **Number of Channels:** 1
- **Number of Items:** 1
- **Product Dimensions:** 19.5"L x 0.2"W x 15.5"H
- **UPC:** 045917795823

## Images

![RFSPACE TSA400 Ultra Wide Band Passive Antenna 375 MHz - 6 GHz for UWB TX/RX SDR SIGINT EMC & FCC Test - Vivaldi Antenna - Image 1](https://m.media-amazon.com/images/I/71JNDfBXnoL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Meets Spec and exceeds expectations.
*by J***N on June 5, 2025*

Measured antenna transfer function using 2 antennas. Found it to be non-dispersive meaning suitable for UWB pulse applications. Verified RFSPACE data for gain and VSWR. Altogether an accurately specified and technically worthy product at a reasonable price point. happy to have found this supplier.

### ⭐⭐ Incorrect Dimensions
*by G***N on April 13, 2023*

I am not sure where Amazon posted their dimensions from! The actual size of this antenna in the two largest dimensions is 19.5" x 15.4" not the product dimensions Amazon posted of 9.25 x 0.2 x 7.5 inches. This is a beast of a size; I understand the physics. No datasheet available on RF Space.

### ⭐⭐⭐⭐⭐ Helpful UWB antenna for everything
*by L***3 on August 3, 2020*

Works great with U bolts to attach to poles. I've bought one for personal use and 6 others for work and they work wonderfully. The holes in the middle will also help with some of the wind load as well. You can add some silicone for additional weather proofing if you like as well as long as you are aware of how it might change your VSWR.

## Frequently Bought Together

- RFSPACE TSA400 Ultra Wide Band Passive Antenna 375 MHz - 6 GHz for UWB TX/RX SDR SIGINT EMC & FCC Test - Vivaldi Antenna
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- TSA900 Ultra Wide band UWB Antenna 900 MHz - 12 GHz for UWB TX/RX SDR RADAR GPR SIGINT EMC TEST ADSB WIFI FVP DRONE VIDEO VIVALDI ANTENNA

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-25*