Description: Shakespeare Model 4287-A NVIS HF TILT WHIP ADAPTERRF-1980F-AT001/RF-1980-AT001 New old stock.Comes with aftermarket base plate adapter.5/8" threads on connector Model 4287-A Shakespeare Tilt Whip Adapter with Coaxial Feed Point Shakespeare Part Number 4287-1A, 4287A, 4289AMarine Corps Part Number 93010G0000, 93010H0000, 93010J0000 Vehicle Applications AAV-C7, LAV-25, LAV-C2 • Antenna spring base with tilt whip adapter built in • Use with 16’ or 32’ antenna, 16’ MFG recommended • Forward or reverse tilt • 12° offset built into base • Spring loaded locking pin allows quick change of tilt settings at vertical, 50º, 70º, 90º • UHF Bulkhead connector • Rated 1 KW 2-30 MHz NVIS TILT WHIP ADAPTERS The purpose of NVIS (Near Vertical Incident Signal) is to enable communications in the area commonly called the “Skip Zone or “Dead Area.” This is accomplished by tilting the antenna so that its main radiating lobe is 73° to 83° above the horizon. The higher radiating lobe causes the signal to bounce off the ionosphere, returning to the earth in the dead area that may occur 10 to 150 miles out when using the antenna vertically. The HF band is home to the most effective frequencies for NVIS applications: 4 to 12 MHz. Shakespeare’s Model 120 system is NVIS ready. The antennas can be mounted on a base, such as Model 4287A Spring Base, which has tilt features built in along with a 12° tilt offset. This product is primarily used with the United States Marine Corps Light Armored Vehicle (LAV) 25. RF-1980F-AT001/RF-1980-AT001 HF TILT WHIP ADAPTER
Price: 349.95 USD
Location: New Orleans, Louisiana
End Time: 2024-02-11T18:05:11.000Z
Shipping Cost: N/A USD
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