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The Bird 4391 is a precision RF wattmeter element designed for highly accurate power measurement across a wide frequency range. Built with durable and rugged materials, it delivers stable and repeatable performance in laboratory and demanding field environments. As part of Bird’s interchangeable system, it ensures seamless integration into compatible wattmeter housings.
With its precision and versatility, the Bird 4391 supports applications in telecommunications, aerospace, and broadcasting industries. Its robust build guarantees reliable results, even under continuous operation in challenging conditions.
Testwall can supply the used Bird 4391, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Bird 4391.
Returns
If you are not completely satisfied with your purchase, simply return the item to us in its original condition within 30 days of receipt.
Returned items should be unused and must be returned in original packaging with any enclosed documentation. We will issue a full refund on receipt, excluding the original delivery charge. Alternatively, if preferred, we will exchange the item.
VAT
Prices exclude VAT. Intra-Community transactions: Under the EU VAT Directive, B2B sales of goods across EU VAT borders is VAT zero-rated.
Where VAT is charged, a rate of 23% is applied.
VAT is not charged outside of the EU.
