The DM N4-4 navigation antenna is a true center-fed antenna which minimizes bearing errors when receiving VOR and ILS signals. The N4-4 provides considerably more gain at the horizon than fuselage mounted "deer horn" or "vee" antennas. Improved signal to noise ratio and reduced errors is due to the N4-4 greater discrimination against vertically polarized signals, and when properly installed on helicopters greater rotor modulation rejection is also provided. To obtain maximum performance, the installation location must be carefully considered.
This N4-4 navigation antenna (Alternate Part# DM N4-4.1) is a single radiating element only.
- True center-fed antenna reduces bearing errors
- Improved signal to noise ratio
- Designed specifically for lightweight planes and helicopters
- Magnesium tubing weighing only 2 lb
AI disclosure: this description was generated with AI assistance from this product's own listing data.
Product Codes | |
|---|---|
| Mfr Part No: | N4-4.1 |
| ECCN: | 7A994 |
| NSN: | 5826-00-897-9961 |
| SCHEDULE B CODE: | 8526.10.6000 |
| TSO: | C40a C36b |
Weight: 2 lbConnector: BNCMounting: on opposite vertical surfaces off aircraftFrequency Range: 108 MHz – 122 MHzVSWR: < 5.0:1Gain: 0±2 dBImpedance: 50ΩPolarization: HorizontalRadiation Pattern: omnidirectional in the azimuth plane, approx. cos q in the vertical planeEfficiency: 95%Power Handling: Receive onlyEnvironmental: Military: MIL-E-5400, MIL-T-5422 FAA: TSO C40a
- Stock: Out of Stock
- Manufacturer Part #: N4-4.1
Aircraft Fitment Finder
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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