AS9100 Rev D/ISO 9001:2015 Certified
Serving the Aviation Industry since 1973
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DMN27-3
Marker Beacon Antenna
Frequency 74.75-75.25 MHz
(DAI Part# DMN27-3)
The DMN27 Antennas are rugged, lightweight antennas for the reception of 75 MHz marker beacon signals.

These low-drag antennas are designed for simple external mounting and require no cutting of airframe structural members. The largest hole required in the skin is for the connector.

Moisture proofing is assured by the dielectric foam filled, white polyester-fiberglass radomes. These skydrol resistant housings are fitted with metal leading edges for erosion protection.

The DMN27 antennas are designed to meet the performance specifications of antennas AT-134 and AT-536.

SPECIFICATIONS
Electrical
Frequency Range 74.75 to 75.25 MHz
Center Frequency 75.0 MHz
VSWR (at midband) < 1.5:1
< 5.0:1 (74.8-75.2 MHz)
VSWR curve stable -65° to + 160° F
Gain (Relative to isotropic) -9 dB
Impedance 50 OHMS
Polarization Horizontal
Mechanical
Connector TNC (female) DMN27-1
C (female) DMN27-2
BNC (female) DMN27-3
Weight 10 oz.
Type of Construction Dielectric foam filled fiberglass housing with metal leading edge
Military Qualified to MIL-T-5422E
FAA TSO C35c
D0108 ENV CAT. ABAAAAX
Harris (D&M/EDO)
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