RCAG_Salient Characteristics.pdf

Salient Characteristics, Mechanical:

The antenna shall be omni-directional, vertically polarized, and designed for mounting on a common, in-line support pipe.

The support pipe size shall be 2 ½ inch I.P.S. An adapter kit shall be provided with each antenna for adapting the 2 ½ inch mounting to a 1 ¼ inch mast. All hardware required for mounting and securing the antenna assembly to either the 2 ½ inch support pipe or adapting the 2 ½ inch mounting to a 1 ¼ inch mast shall be provided. The assembly mounting-to-support-pipe shall be coaxial or in-line. The assembly shall be provided with seals to prevent any moisture from entering either the antenna or support pipe.

The antennas shall have a drain hole that will allow any condensate water to drain from the inside of the radome. The fiberglass radomes’ outer surface shall have a finish suitable for long term (approximately 10 years) outdoor operation. The antennas shall be constructed of corrosion-resistant materials and contain no exposed dissimilar metal joints.

All parts required for mounting the antennas to 1 ¼ I.P.S. and 2 ½ I.P.S. support pipes shall be captive to the antennas with the exception of the mounting bolts.

An assembly shall include all components of the antenna array, assembly mount, connector(s), radome and support mast where applicable. Components of the antenna array that are enclosed within the radome assembly shall be securely held in place.

Each antenna shall be terminated at the lower exterior base of the antenna radome with a Type N female coaxial connector.

The antenna mounting method shall be such that the antennas can be securely rested on the support pipes and be self-supporting during the mounting process. The antennas must be installable by only one technician.

The antenna assembly shall meet or exceed the required characteristics over the range of operating service conditions specified below:

Temperature -40 degrees C to 60 degree C

Relative Humidity 0% to 100%, including seacoast salt-spray environment.

Wind and ice loading Shall be able to withstand winds up to 85 knots; with up to ½ inch of radial ice coating.

Precipitation

Vibration

Shall be able to operate with 7 inches of rainfall per hour.

Highway Transportation

Fungus

Inert to fungus growth

The antenna shall be sufficiently rugged and weather-proof to operate unattended and continuously for 10 years in adverse environments, i.e., fog, rain, snow, hail, salt-spray, high winds, etc.

All metal parts of the antennas, including the center pin of the input connector, shall have a low (less than an ohm) DC resistance to ground.

Grounding shall be accomplished after securing the antenna to the mast. A means shall be provided to attach a customer supplied AWG #6 ground wire to the external antenna ground. Any terminals required to ground the antenna shall be provided.

Salient Characteristics, Electrical:

VSWR Shall be less than or equal to 2:1

Terminal impedance 50 ohms plus/minus 5%

RF power rating Shall be able to radiate 100W carrier continuously without visible damage or deformation of the antenna; the change in VSWR shall be less than 10% over the frequency range.

Radiation, Omni-directional Plus/minus 1.0 dB for 360 degrees of rotation at 0 degrees elevation.

Radiation, vertical peak or deviation 0 degrees, plus/minus 10 degrees.

Elevation Beamwidth

RF Power Gain

65o minimum beamwidth at -3 dB half-power point.

0 dBi minimum

Testing Requirements

Design Qualification Testing

Antennas that have never been supplied to the FAA will be subjected to the following Design Qualification tests to verify compliance with the mechanical and electrical characteristics.

1. Performance of tests to verify compliance with VSWR, radiation patterns isolation and gain requirements.

2. Environmental testing to the following specifications

Attachment B RCAG Antenna Specification

7/2/2018

a. Low Temperature per MIL-STD-810F, Method 502.4, Procedure III.

Low temperature of -40oC, 24 hours dwell time after low temperature is reached.

b. High Temperature per MIL-STD-810F, Method 501.4, Procedure II.

Low temperature of +60oC, 24 hours dwell time after low temperature is reached.

c. Relative Humidity per MIL-STD-810F, Method 507.4, Procedure II, Aggravated Temp-RH Test. Test duration of 10 each 24 hour cycles.

d. Fungus per MIL-STD-810F, Method 508.4.

e. Vibration per MIL-STD-810F, Method 514.5, Figure 514.5c-1, Highway Truck Vibration. Test time of 3 hours per axis.

f. Salt Fog per MIL-STD-810F, Method 509.4.

g. Simulated wind and ice load test. With the antenna mounted horizontally, place at least five equally distributed weights that equal the total wind and ice loading, along the length of the radome. Leave the weights in place for 10 minutes.

Production Testing

Each antenna will be tested for acceptable VSWR using sweep frequency testing over the full frequency band prior to delivery.

NSN 5985-01-050-7521: This Type 1 antenna assembly shall be brand name or equal to TACO Communications Model D5077 or Antenna Products Model DPV37 low-profile UHF antenna (single element).

Antenna weight shall not exceed 5 pounds. Length of antenna shall not exceed 41 inches.

The antenna shall meet or exceed the Electrical Salient Characteristics over the frequency range 225 MHz to 400 MHz.

NSN 5985-01-050-7522: This Type 1 antenna assembly shall be brand name or equal to TACO Communications Model D5076 or Antenna Products Model DPV35 low-profile VHF antenna (single element).

Antenna weight shall not exceed 7 pounds. Length of antenna shall not exceed 56 inches.

The antenna shall meet or exceed the Electrical Salient Characteristics over the frequency range 118 MHz to 137 MHz.

7/2/2018

NSN 5985-01-050-7523: This Type 1 antenna assembly shall be brand name or equal to TACO Communications Model D5074 or Antenna Products Model DPV38 low-profile UHF/UHF antenna (two single elements).

Antenna weight shall not exceed 14 pounds. Length of antenna shall not exceed 92 inches.

The antenna shall meet or exceed the Electrical Salient Characteristics over the frequency range 225 MHz to 400 MHz.

NSN 5985-01-050-7524: This Type 1 antenna assembly shall be brand name or equal to TACO Communications Model D5073 or Antenna Products Model DPV39 low-profile VHF / UHF antenna (two single elements).

Antenna weight shall not exceed 14 pounds. Length of antenna shall not exceed 94 inches.

The antenna shall meet or exceed the Electrical Salient Characteristics over the frequency range 118 MHz to 137 MHz and 225 MHz to 400 MHz.

NSN 5985-01-050-7525: This Type 1 antenna assembly shall be brand name or equal to TACO Communications Model D5061A-1 or Antenna Products Model DPV40 low-profile High Gain VHF antenna (two element array).

Antenna weight shall not exceed 20 pounds. Length of antenna shall not exceed 134 inches.

The antenna shall meet or exceed the Electrical Salient Characteristics over the frequency range 118 MHz to 137 MHz.

NSN 5985-01-053-5108: This Type 1 antenna assembly shall be brand name or equal to TACO Communications Model D5072 or Antenna Products Model DPV36 low-profile VHF/VHF antenna (two single elements).

Antenna weight shall not exceed 20 pounds. Length of antenna shall not exceed 155 inches.

The antenna shall meet or exceed the Electrical Salient Characteristics over the frequency range 118 MHz to 137 MHz.

NSN 5985-01-296-1904: This Type 1 antenna assembly shall be brand name or equal to TACO Communications Model D5062A or Antenna Products Model DPV51 low-profile High Gain UHF antenna (two element array).

Antenna weight shall not exceed 15 pounds. Length of antenna shall not exceed 78 inches.

frequency range 225 MHz to 400 MHz.

7/2/2018

NSN 5985-01-668-0620: This Type 1 antenna assembly shall be brand name or equal to TACO Communications Model D8076 or Antenna Products Model DPV35I low-profile High Gain VHF antenna (single element). It shall be painted black and have a coating that will inhibit ice from collecting on the antenna.

Antenna weight shall not exceed 9 pounds. Length of antenna shall not exceed 65 inches.

frequency range 118 MHz to 137 MHz