
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
- Stock: Out of Stock
- Manufacturer Part #: 21-50-339
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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.
Authenticity & authorization
We source products from manufacturers, authorized distributors, and established aviation suppliers as applicable. We are an independent reseller; we do not claim direct dealer or authorized-representative status for any brand. Documentation, source, and warranty eligibility vary by product and are confirmed on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
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.
Shipping
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