VHF/UHF Low Profile Tuned Antenna | 30-88 MHz, 108-174 MHz, 225-400 MHz

Type 12-190-60 is a low profile, high efficiency, PIN diode tuned, antenna. Intended for general airborne application, and operating over the frequency ranges 30 MHz to 88 MHz, 108 MHz to 174 MHz and 225 MHz to 400 MHz. This antenna offers a guard facility whereby performance is maintained at 121.5 MHz and 243 MHz when switched to any frequency within specified operating bands. At VHF and UHF frequencies, the capacitance between the top tube and ground is tuned out by a series of binary related PIN diode switched inductors in accordance with encoded data from the transmitter. This produces a high efficiency structure with a degree of selectivity particularly at low FM frequencies.

Features

• Ten fixing holes
• Configured as an electrically short monopole
• Radiation resistance compensation is provided by a capacitive transformer
• Pressure moulded glass-reinforced plastic shell
• Aluminum alloy baseplate
• Double tube arrangement in a coaxial configuration
• Polyurethane, anti-erosion strip is bonded onto the leading edge

Specifications

Weight:
3.52 lb

Dimensions:
9.25 x 2.79 x 12.40 in.

Frequency:
30 MHz – 88 MHz, 108 MHz – 174 MHz, 225 MHz – 400 MHz

VSWR:
≤ 2.5:1 30 – 88MHz, ≤ 2.5:1 108 – 174MHz, ≤ 2.3:1 225 – 299.995MHz, ≤ 2.0:1 300 – 400MHz

Polarization:
Vertical

Impedance:
50Ω

Power rating:
23 W

Material:
Brown epoxy

Finish:
Satin

Connector: 
TNC female

Temperature:
-54°C to 71°C

Altitude:
70,000 ft