If you’re in RF communications, defense, aerospace, satellite testing, or high-frequency manufacturing, your lab relies on one thing above all—precision RF measurements. The Agilent E4407B ESA-E Series Spectrum Analyzer, capable of analyzing signals up to 26.5 GHz, is a staple in these environments. And when it breaks down or falls out of calibration, operations stop.
At Aumictech, we specialize in fast, reliable, and cost-effective repair and calibration services for the E4407B, as well as other RF and microwave test instruments. Our lab is trusted by telecom firms, government contractors, wireless chip manufacturers, and RF engineers across the U.S. and globally.
📡 Overview: What Is the E4407B ESA-E Spectrum Analyzer?
The E4407B ESA-E Series Spectrum Analyzer from Keysight (formerly Agilent Technologies) is a benchtop RF and microwave spectrum analyzer used for characterizing frequency-domain behavior of signals up to 26.5 GHz. It’s commonly used in:
- Wireless and radar communication systems
- RF module validation and characterization
- Satellite and aerospace component testing
- EMI/EMC pre-compliance measurements
- General-purpose signal analysis and diagnostics
⚙️ Key Technical Specifications
| Feature | Value |
|---|---|
| Frequency Range | 9 kHz – 26.5 GHz |
| Displayed Average Noise Level (DANL) | -145 dBm |
| Phase Noise | -106 dBc/Hz @ 10 kHz offset |
| Resolution Bandwidth (RBW) | 1 Hz – 5 MHz |
| Sweep Time | 10 µs to 2000 s |
| Input Connector | N-type (50 ohm) |
| Interface | GPIB, LAN, USB (w/ adapters), RS-232 |
| Operating System | Embedded Windows (Upgradeable) |
The E4407B’s high sensitivity and low noise floor make it a robust tool for precision RF applications—but only when properly maintained and calibrated.
🔧 Common Failures and Issues with the E4407B
While built to military-grade specs, E4407Bs are not immune to hardware wear, RF drift, or environmental stress. At Aumictech, we diagnose and resolve:
🛠️ Hardware Issues:
- Faulty input attenuator or preamplifier
- Burned or damaged RF front-end
- Calibration source drift or failure
- Bad N-type connector or switch matrix damage
- Defective power supply or fan overheating
🛠️ Display and UI:
- Dim or dead LCD screens
- Malfunctioning front panel buttons or knobs
- Frozen boot or Windows OS errors
- GUI glitches and software corruption
🛠️ Communication and I/O:
- GPIB port malfunction
- Network interface failure (Ethernet/LAN port)
- Inaccessible internal memory
Our skilled technicians are trained to repair down to the component level, often saving you 70–80% compared to OEM service costs.
🧪 Precision Calibration – NIST-Traceable
Spectrum analyzers like the E4407B require annual calibration to ensure accurate measurements of signal power, spurious emissions, modulation bandwidth, and more.
At Aumictech, our RF calibration lab is traceable to NIST and adheres to ISO/IEC 17025 principles.
Our Calibration Process Includes:
- Frequency accuracy verification across 9 kHz to 26.5 GHz
- Amplitude accuracy tests at multiple dBm levels
- Spurious response analysis
- Sweep linearity and RBW calibration
- Phase noise validation
- PDF report with before-and-after readings
Whether you’re testing LTE, WiFi, 5G, RADAR, or satellite signals, you need calibration you can trust. That’s what we provide.
🔁 Refurbishment & Upgrades
Don’t throw away your E4407B just because the screen is fading or the software is outdated. We offer complete refurbishment services, including:
- LCD/LED display replacement
- Front panel & button restoration
- Hard drive replacement (SSD upgrade)
- Firmware updates and OS reinstallation
- External connector and port repair
- Cosmetic case cleaning and painting
We can even help you resell or trade in your old units—ask us about Aumictech’s buyback program.
🧰 Why Engineers Still Use the E4407B in 2025
| Feature | Agilent E4407B | Keysight X-Series (e.g., N9020B) | Rohde & Schwarz FSW |
|---|---|---|---|
| Frequency Range | Up to 26.5 GHz | Up to 50 GHz | Up to 90 GHz |
| Modularity | Moderate | High | Very High |
| Cost | Affordable | $$$$ | $$$$$ |
| Repairability | High | Low (OEM only) | Limited |
| Longevity | Proven | Ongoing | High-end |
The E4407B is still preferred by many labs and defense contractors due to:
- High performance at a lower cost
- Robust legacy support
- Modular internal components for easier repair
- Compatibility with older automated test setups (ATE) via GPIB or RS-232
📦 Process, Turnaround, and Shipping
We handle everything from diagnostics to packaging.
- 🔍 Free diagnostic inspection
- ⚡ Standard turnaround: 5–7 business days
- 🚚 Expedited repair: 1–3 days available
- 🛫 Nationwide and International shipping
- 📋 Reports & Certificates included
- 🛡️ Return on Repair (RoR): 15 Days
- 💳 Multiple payment options: ACH, PayPal, Card, Wire
🏢 Clients Who Trust Aumictech
- RF module & microwave manufacturers
- Defense & aerospace contractors
- Satellite communication labs
- Wireless semiconductor companies
- Research universities & test labs
- Government and DoD partners
🏆 Why Choose Aumictech for RF Analyzer Repair
- ✅ Over a decade of hands-on experience
- ✅ Skilled engineers in both RF and optical domains
- ✅ Fast turnaround and transparent pricing
- ✅ OEM-grade components and test gear
- ✅ Personalized support and dedicated account managers
- ✅ Based in Downingtown, PA — trusted across the USA
❓ FAQ – E4407B Spectrum Analyzer
🔹 Q: Can you fix units with RF input damage?
A: Yes. We specialize in repairing or replacing damaged input attenuators and switches.
🔹 Q: Do you issue calibration certificates?
A: Yes. All calibrations include a NIST-traceable certificate with full test data.
🔹 Q: Do you support the entire ESA-E series?
A: Absolutely. We repair E4401B, E4402B, E4403B, E4404B, E4405B, and E4407B models.
🔹 Q: Do you buy back or refurbish old units?
A: Yes. Contact us about trade-ins and resale support.
📞 Contact Aumictech – Let’s Get Your Analyzer Working Like New
If your Agilent E4407B ESA-E Spectrum Analyzer needs calibration, repair, or a second life—contact Aumictech today.
📍 Address: Downingtown, PA, USA
🌐 Website: www.aumictech.com
📧 Email: sales@aumictech.com
📦 We ship and receive across the U.S., Canada, EU, and Asia
“Trusted RF analyzer repair partner for aerospace, defense, telecom, and wireless innovators.”
