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Page Title:
Antenna-Conducted Spurious Emanations |
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|  MIL-R-23016(Wep)
and 0.15 to 400 mc for broadband impulse interference. This
requirement includes fundamental oscillator radiations other
spurious emanations, and broadband interference. This does
not include radiation emanating from antennas. Test setups
are illustrated in Figures 9, 10, 11, and 12.
Antenna-Conducted Spurious Emanations:
3.2.9.13
Transmitter Keyup or Receiver:
3.2.9.13.1
The r-f output of the transmitter keyup or receiver shall not
exceed 43 db above 1 microvolt for cw or 60 db above 1 micro-
volt per mc for pulse cw interference at any frequency between
0.15 and 10,000 mc. Normally, measurements are required up to
the 20 harmonic or 1,000 mc, whichever is higher, but in no
event above 10,000 mc unless the contractor can show by scan-
ning or other means that such measurements will not result in
any significant data.
3.2.9.13.2
Transmitter Keydown:
The transmitter shall be operated into a dummy load. A suit-
able coupling device shall be used to sample the transmitter
output and protect the measuring equipment. Bridge "T" rejec-
tion network, filter rejection network, or other adequate
devices shall have the approval of the procuring activity.
Attention should be given to oscillator frequency and harmonics,
outputs from frequency multipliers and crystal saver circuits,
beat frequency oscillator outputs, etc. External filters shall
not be used unless approval is obtained from the procuring
activity. Normally, measurements shall be made up to the 10th
harmonic or 1,000 mc, whichever is higher, but in no event
above 10,000 mc unless the contractor can show by scanning or
other means that such measurements will not result in any
significant data.
3.2.9.13.2.1 Spurious Emission Limits:
The peak power output shall be as follows:
(a) Second Harmonic: The peak power output of the second
harmonic of the output fundamental frequency shall be at
71
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