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Bird - The RF Experts

Upgrade Your RF Measurement Experience!


Trade-in your old 4421 meter and save 30% on a new 4421A series meter.


    Here's why you should switch:

    1. Multi-Parameter Display: View multiple parameters at once for clarity and efficiency.
    2. Dual Sensor Display: Boost productivity by viewing measurements from two RF sensors simultaneously.
    3. Graphing Mode: Ensure measurement accuracy with real-time stabilization tracking.
    4. Customizable Display: Tailor your display to show only essential data, reducing errors.

    The Trade-In Advantage:

    • Generous Value: Get the latest 4421A Meter at a lower cost.
    • Seamless Transition: Hassle-free setup for displaying essential readings.
    • Future-Proofing: Supports legacy and latest sensors for continuous wave and pulsed readings to 0.5% accuracy.
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Upgrade your RF measurements with Bird's 4421A series meter!  
Terms and Conditions: Discount applies to the 4421A models’ list price and cannot be combined with other offers. Shipping and handling not included. Trade-in items must be functional and returned to Bird via an RMA # request, fill out form below. This program ends on May 31, 2024. Bird reserves the right to change or cancel this program at any time.

Complete the form below, and a Bird service representative will contact you via email.

4421A Trade In Request

Item #1


Billing Address
Shipping Information
Same as Billing Address
Comments or Questions

Domestic Return Shipments

  • When sending by courier ship direct to:
    Bird Service Center, 30303 Aurora Road - Solon, Ohio 44139
  • For smaller shipments:
    Send returns through UPS — United Parcel Service directly to the Bird Service Center.

International Return Shipments [Customs Broker]

All invoices should state "US GOODS RETURNED" and include a Value for Customs.

If being returned for repair or calibration, please state: "US GOODS BEING RETURNED FOR REPAIR AND/OR CALIBRATION".

Contact your local Nippon Express Office for shipment