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Vhf/Uhf 3 Frequency ELT Sar Antenna. 121.5/156.8/243MHz for Helicopter and Fixed Wing Up To 250Kts. 8.5 Fiberglass Bent Rod, 4-hole mount with Female BNC connector. 25W power handling. DO160 qualified 21-50-339

Vhf/Uhf 3 Frequency ELT Sar Antenna. 121.5/156.8/243MHz for Helicopter and Fixed Wing Up To 250Kts. 8.5 Fiberglass Bent Rod, 4-hole mount with Female BNC connector. 25W power handling. DO160 qualified 21-50-339
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Vhf/Uhf 3 Frequency ELT Sar Antenna. 121.5/156.8/243MHz for Helicopter and Fixed Wing Up To 250Kts. 8.5 Fiberglass Bent Rod, 4-hole mount with Female BNC connector. 25W power handling. DO160 qualified 21-50-339
VHF/UHF 3 Frequency ELT SAR Antenna. 121.5/156.8/243MHz for Helicopter and Fixed Wing Up To 250Kts. 8.5 Fiberglass Bent Rod, 4-hole mount with Female BNC connector. 25W power handling. DO160 qualified 21-50-339
VHF/UHF ELT Antenna | Bent Rod, 121.5, 156.8, & 243MHz

The 21-50-339 is an externally mounted airborne VHF/UHF/ELT (Emergency Locator Transmitter) antenna operating over the maritime and aviation distress frequencies. The radiating element comprises a hard drawn alloy tube inserted into a moulded base which contains foamed-in place matching circuits capable of handling up to 25 Watts power. The method of construction provides protection from environmental conditions including vibration, shock and temperature variations.


  • Covers Maritime and aviation ELT VHF & UHF frequencies
  • Lightweight and Ultra Low Profile
  • Only 8.5” stand off height
  • For helicopter and fixed wing aircraft up to 250 Knots
  • Glass/Epoxy –aluminum construction
  • Small footprint
  • Designed to DO160 environmental conditions
  • 25 watts power handling

Product Codes

Mfr Part No:21-50-339


Weight: 0.37 lbHeight: 8.5 in.Frequency: 121.5, 156.8, 243 MHzImpedance: 50 Ohms NominalVSWR: 2.6:1 MaximumPolarization: VerticalPattern: OmnidirectionalConnector: BNC FemaleRF Power Capacity: 25 WattsMounting: 4-hole

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  • Stock: Out of Stock
  • Manufacturer Part #: 21-50-339
$3,907.16

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Returns & refund summary

  • 30-day return window — with prior return authorization, unopened in original packaging.
  • Restocking fee: 20% on unopened items, 30% on open-box items.
  • Refund processing fee: 5.51% applies only to customer-remorse returns and customer-initiated cancellations. If a problem is our fault (our cancellation, unavailability, wrong item, confirmed defect, or shipping damage) your refund is 100% with no fees.
  • Return shipping: paid by buyer on customer-remorse returns; we pay return shipping when the problem is our fault.
  • Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.

Full terms: Return Policy.

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See our full Manufacturer Authorizations page for the current per-brand status.

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If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.

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