MIL-DTL-25708/3E
REQUIREMENTS:
Dimensions and configuration: See figure 1.
Materials:
Base: Aluminum alloy in accordance with ASTM B85/B85M, alloy SC84B.
Cover: Suitable material that will resist erosion of impinging particles at velocities up to Mach 2.
Temperature operating range: -55°C to 250°C.
Side loading: 10.5 psig (100 pounds).
Frequency range: 0.960 to 1.220 GHz.
Impedance: 50 ohms nominal.
VSWR:
Antenna:
1.40:1 maximum from 0.960 to 1.220 GHz.
1.30:1 maximum from 1.000 to 1.100 GHz.
Sampling probe: 1.50:1 maximum from 0.960 to 1.220 GHz.
Power: 4 kW peak, 100 watts average.
Weight: 10 ounces maximum.
Part or Identifying Number (PIN): M25708/3-03.
Data list: A data list shall accompany each antenna with VSWR measurement values made at .960, 1.100, and
1.200 GHz.
Intended use: Intended for use on T-38 and F-5 aircraft.
Referenced documents. In addition to MIL-DTL-25708, this document references the following
MIL-PRF-39012/21
MIL-DTL-3643
ASTM-B85/B85M
The margins of this specification sheet are marked with vertical lines to indicate modifications generated by this
revision. This was done as a convenience only and the Government assumes no liability whatsoever for any
inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document
based on the entire content irrespective of the marginal notations.
Custodians:
Preparing activity:
Army - CR
DLA - CC
Navy - AS
Air Force - 85
(Project 5985-2012-031)
DLA - CC
Review activities:
Army - AV
NOTE: The activities listed above were interested in this document as of the date of this document. Since
organizations and responsibilities can change, you should verify the currency of the information above using the
ASSIST Online database at https://assist.dla.mil/.
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