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Installation outdoors at the antenna is not normally needed or recommended. However, some antenna
types such as Pennants, Flags or K9AY Loops require a preamplifier at the antenna.
If you are
mounting the unit outdoors, you will also need a non-corrosive, silicon-based RTV sealant, such as
DX Engineering
RTV598335
. Sealants that contain acetic acid are corrosive to aluminum and should
be avoided.
Specifications
Power Requirement:
+12-18 Vdc @ 130 mA maximum
Output TOI
(Third Order Intercept):
+43 dBm @ 13 Vdc
Noise figure:
3.5 dB
One dB Compression:
+26 dBm (~ .4 watts output)
Gain:
16 dB from 300 kHz to 35 MHz (+1.5 to −1.5 dB over this range)
500 Hz BW IM3 Dynamic range:
110 dB or greater
The following are simplified explanations of information highlighted above.
Third Order Intercept
A standard measure of how well a
receiving system performs in the
presence of strong nearby signals. The
higher the third order intercept (TOI),
the less likely adjacent strong signals
will cause interference. The
DXE-RPA-
1
offers substantially improved TOI over
competitive preamplifiers and
communication receivers. The figure to
the right illustrates a typical
DXE-RPA-
1
output third order intercept
measurement. The
DXE-RPA-1
is
significantly more immune to overload than the best commercial amateur receivers. Third order
products are 50 dB below +18 dBm output.
Noise Figure
The ratio of equivalent noise power developed at the input to that generated by thermal noise in
the source resistance, usually expressed in decibels. If it were possible, a perfect amplifier
would have a noise figure of 0 dB. The
DXE-RPA-1
is extremely quiet, and does not contribute
noticeable noise to receiving systems.
Dynamic range
The ratio of the faintest signal detected to the loudest signal amplified without significant
distortion, typically expressed in decibels. The
DXE-RPA-1
allows you to hear faint signals in
the presence of adjacent strong signals.
Gain
The ratio of signal input to output. The
DXE-RPA-1
features a high gain that is easily reduced
if not needed.
