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
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 - On Backorder
- 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 to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
- Return shipping: paid by buyer.
- 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
All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available 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
Standard ground, expedited, and AOG shipping options are available at checkout. Full shipping-cost tiers and timelines are published on our Delivery Information page.
