Description
Amplifier Research 400A400 RF Amplifier Repair and Calibration
The Amplifier Research 400A400 is a solid-state broadband RF power amplifier — 400 W covering roughly 10 kHz–400 MHz (the “A” denotes a wideband class), an EMC immunity amplifier with wide frequency coverage. As a high-power solid-state RF amplifier, its faults concentrate in the RF output stages and combiners, the high-power supply, and thermal management — not the low-voltage power-supply faults its category label implies.
June Company repairs and calibrates the AR 400A400 for EMC test labs and RF engineering teams.
Common AR 400A400 problems we fix
- Control-interface faults — the control/monitoring electronics not responding correctly, repaired.
- Low or no RF output — output-stage failure, repaired so it delivers rated power across the wide band.
- Partial power / one module down — a failed output path on a high-power amp, isolated and repaired.
- Fault/shutdown or overheating — power-supply, protection, or cooling faults, repaired.
- Gain flatness off — gain drift across the band, recalibrated.
FAQs
My 400A400 output is down or partial — repairable? Yes. RF output-stage faults are the usual cause and they’re repairable, then verified so it delivers rated power and gain across the wide band, with a NIST-traceable certificate.
Is gain flatness verified? Yes — checked across the band against our standards.
Every repair includes NIST-traceable calibration and a 90-day parts-and-labor warranty. Email us or submit a service request.
Shipping & Returns
Packing your equipment. You are responsible for packaging equipment adequately for transit. We strongly recommend the original manufacturer’s case, or double-boxing with at least two inches of shock-absorbing material on all six sides. We return your equipment in the packaging it arrived in, so please send it in packaging that will survive the return trip as well. If your packaging is damaged or inadequate for the return, we will substitute suitable packaging and may charge the cost of materials.
Insurance. Equipment is not insured by June Company while in transit. We strongly recommend insuring your shipment for its full replacement value.
Risk of loss. Risk of loss remains with you until your equipment is received at our facility, and transfers back to you when your repaired unit is delivered to the carrier (F.O.B. shipping point). June Company is not responsible for equipment lost, delayed, misdelivered, or damaged in transit, in either direction.
Return label. A prepaid and preprinted return shipping label should be included with your shipment. If one is not included, we will provide one.
Transit damage. Damage occurring in transit is the responsibility of the carrier. It is not a warranty defect and is not covered by the 90-day repair warranty. Any claim must be filed by you with the carrier; we will supply photographs and documentation to support it at no charge.
Full details: Terms & Conditions, Section 6 · Return Policy
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