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10.10.15 Using an
In the frequency range from 30 MHz to 3 GHz two different antennas, a
Biconic and a Log-Periodic can be used to pick-up and measure RF radiated
Antenna
emissions; alternatively, some Biconi-Log antennas are also available to
cover the whole range without changing between two antennas, even if such
a solution is mostly more expensive and the antenna size is usually bigger.
The really "unique" feature of PMM 9030 is that of allowing direct connection
between antenna output connector and EMI receiver input, so dramatically
increasing system immunity to environmental noise at detection side and
completely cutting-off any capacitive coupling between antenna, ground
plane and connectin cables.
In order to perfectly match antennas to PMM 9030, a dedicated Teflon
Antenna Holder is also provided as a standard accessory, so balancing
weight between receiver and antenna when attached to a tripod or antenna
mast.
Such Antenna Holder comes with some spare parts plus nuts and bolts,
which can be easily assembled with provided wrench, as per step-by-step
operations in following pictures.
Fig. 10-4 PMM 9030 Antenna Holder spare parts
PMM 9030 Frequency Extension
10-15
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