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installed should be found and used for broadcast band reception. If any jumpers are installed,
you can expect signal levels to be dramatically reduced in the broadcast band. However, even
with no jumpers, there is a significant roll-off of signal level from the top to the bottom of the
broadcast band.
3) After tuning in a steady, non-fading reference signal on the broadcast band and noting the signal
level, add 4 radials that are about 15 feet long to the negative terminal ground rod connection on
the
AVA-2
. If this significantly increases signal level, then adding another ground rod and/or
more radials, as described in the manual for the
DXE-ARAV4-1P
, should improve your signal
results for all bands.
4) When disconnecting the power to the Active Receive Vertical antenna, there should be very
little or no signal. In other words, verify that powering the Active Receive Vertical antenna
results in improved signal level and signal-to-noise enhancement, without a large increase in
noise. If there is almost the same amount of signal without and with power, there are two
possible issues:
a) Proper operating voltage is not arriving at the Active Receive Vertical antenna, or;
b) If you seem to have a high amount of common mode signal or noise arriving on the
shield of the Active Receive Vertical antenna feedline that is running on or above
ground or similar noise as your transmit antenna, for some installations the
DXE-
RFCC-1
Receive Feedline Current Choke may help. The use of the
DXE-RFCC-1
Receive Feedline Current Choke will remove common mode signal and noise collected
by the shield of the feedline in order to realize normal signal-to-noise improvements
available from an Active Receive Vertical antenna.
Given that all connections are good, voltage at the
AVA-2
is good and that the other tests indicate
everything is normal, it is likely the signal level you are receiving is normal.
In most circumstances, the
DXE-ARAV4-1P
Active Receive Vertical antenna used singly, or in
two and four antenna arrays, offers low level low band signals that have significantly improved
signal-to-noise. It is sometimes necessary to enhance these results to listening levels by using the
DXE-RPA-1Plus or DXE-RPA-2
Receive Pre-Amplifier in line, without losing the signal-to-noise
benefits of the no-gain Active Receive Vertical antenna. Only the
DXE-RPA-1Plus
or DXE-RPA-
2
Receive Pre-Amplifier operates with a third order intercept and dynamic range that is far superior
to most receiver front-ends.
