AVIONICS

The C70 series VHF communications antennas are designed for top or bottom installations on high-performance, single or twin, and turbo engine for fixed and rotary wing aircraft. The C70 series antennas offer mechanical strength and high-electrical efficiency to provide reliability at full 360/720 channel transceiver operations. Its lightweight profile is unobtrusive, resistant to icing, and offers a low drag profile. The C70-6 have an alternate mount pattern than the C70-1/A while other characteristics remain the same

The H21-1 dual VOR or dual marker beacon diplexer will permit operation of two NAV receivers form one VOR antenna or two marker beacon receivers from one marker beacon antenna. The unit is housed in an aluminum case and all circuit components fully encapsulated for vibration protection as well as waterproof protection.

The H22-1 single VOR and single GS diplexer will permit operation of one NAV and one glide slope receiver from one VOR antenna. The unit is housed in an aluminum case and all circuit components fully encapsulated for vibration protection as well as waterproof protection.

• Instrument landing system redundant couplers
• Minimum insertion loss

The DM N25 Series of glide slope antennas employ a grounded, center-fed loop as the radiating element. The resulting radiation patterns are symmetrical. All DM N25 Series antennas provide complete lightning protection for the associated receivers. They are suitable for mounting either externally, or within a nose radome. The inherent 180° pattern beam may be modified slightly by the geometry surrounding the installation. The DM N25 antennas are recommended for installations in close proximity to radar dish installations since the antenna’s (glide slope) sensitivity is relatively unaffected by dish motion.

The N25 series of glide slope antenna use a grounded, center-fed loop as the radiating element, which produces the radiation patterns. This antenna is a dual connector that incorporates a hybrid; its circuitry effectively isolates the two associated receiving systems providing protection against disablement of both systems in the event of failure in one system. The radiation pattern associated with each DM N25-2 antenna port is identical, so that no coupler dropout problem occurs during automatic landing. All DM N25 series antennas provide complete lightening protection for the associated receivers. They are suitable for mounting either externally or within a nose radome.

The N4-33 VOR/LOC antenna is designed for high performing aircraft where aerodynamic drag and weight must be held at a minimum. These systems provide increased range and reduced bearing error — not possible with dipole type installations. Rugged metal edges provide erosion resistance and the flush glass housing ensures smooth airflow for reduced drag. Each assembly is foam-filled for maximum reliability. The N4-33 is intended primarily for retrofit installations or antenna modifications on existing aircraft and designed for ease of installation.

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.