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Table of Contents
A
ctive
R
eceiving
A
ntennas
Dressler Active Receiving Antenna
Installation Information
New Installation information:
The ARA 60 and HDX 100 antennas operate very well when mounted at ground level.
mounting greatly reduces the possibility of the coax reacting with the RF signal to inadvertantly
increase the effective length of the monopole antenna and minimizes man made noise pickup by
the antenna and coax. Read more in the ARA 60 and HDX 100 mounting section on page 4.
Introduction:
The Dressler ARA "Active Receiving Antenna" products are an excellent investment for your shortwave
listening pleasure. Our customers routinely tell us that they consider them to be the best commercially
available "active" antenna product on the market. The ARA antennas are small, light and very easy to
install. Even indoors, they provide excellent performance across their entire band ranges without any
tuning. The ARA 60 compares favorably with long wire antennas in terms of signal strength. In addition,
the ARA products are "Electrically Short" and offer the advantage of receiving a lower level of
disturbances due to electrostatic discharge and other man made (QRM) noise. The ARA low profile also
offers wind resistance to 100 MPH, when mounted on a suitable structure.
All standard ARA models provide about 7-14 dB of gain and low noise figures which can enhance the
sensitivity of virtually any shortwave receiver. We now offer LMR-240 (Ultra-Flex) low loss cable as an
option for the ARA UHF products. The low loss cable typically increases signal sensitivity by about 6 dB*
as compared to using standard RG-58/U cable. The HDX models are designed to withstand a higher level
of ambient signal level and are best suite for urban locations with high ambient RF levels or any other site
in close proximity to high power broadcast or other communication transmission services. All UHF HDX
models are supplied with the LMR-240 low loss cable.
Dressler ARA products offer several models, all designed to provide you with the best possible reception
in two basic frequency ranges, 40 kHz - 60 MHz and 50 MHz - 2000 MHz. A mast-mounted preamplifier
(EWPA 5200) is offered for those using "Discone" or high gain antenna types for special applications. All
ARA products are connected in the same manner, using the same basic power supply and cabling
components.
The ARA products are designed to operate with telecommunication receivers and wideband scanner
receivers with coaxial antenna inputs. Portable receivers with the internal telescopic or loop antennas are
difficult to connect to the ARA products and may not offer the level of performance associated with the
ARA product name.
*Based on loss factors for a 40' length of coax at 2 GHz.
LMR-240 - 4.6 dB
RG-58 - 11 dB
B
roadband Power Technology
,
3945 North 900 West, Pleasant View, UT 84414-1055 Ph: 801.732.0924 Fx: 801.732.0891
Website: http://www.bptec.com
(See page 4)
Email: info@bptec.com
1
ARA 2000 shown
Low
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Table of Contents
Summary of Contents for Dressler ARA-2000
- Page 1 LMR-240 low loss cable. Dressler ARA products offer several models, all designed to provide you with the best possible reception in two basic frequency ranges, 40 kHz - 60 MHz and 50 MHz - 2000 MHz. A mast-mounted preamplifier (EWPA 5200) is offered for those using "Discone"...
- Page 2 The ARA-2000LL provides the same excellent receiving sensitivity as its predecessors, the ARA-900 and 1500, but now offers extended frequency coverage to 2000 MHz. ARA-2000 HDX The ARA 2000-HDX covers 50 to 2000 MHz and is specifically designed for use in locations with high ambient RF signals levels.
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Page 3: The Dc Power Supply
Installation - Where to Place the Antenna - The UHF models, (ARA-2000, 2000-HDX) and antennas using the EWPA-5200 should be mounted as high as possible above ground level and away from structures (towers), trees and other obstacles. A clear view of the horizon in all directions will insure optimum reception. Installation of the ARA active antenna outside the building structure will assure you of the best possible reception quality. - Page 4 Locating the antenna at a closer distance will degrade performance, but not to the extent of making the antenna performance unsatisfactory. The ARA-2000 mounting brackets should be located at a distance of no more than 25 mm (1 inch) between each other with the lower bracket located at the bottom end of the antenna tube.
- Page 5 Interconnect Diagram for the Dressler ARA 60 and ARA 2000 antenna Installation Provides continuous coverage from 40 kHz to 2000 MHz 2000 HF input - UHF input - Use BNC to Use BNC to PL-259 cable N(M) cable RG-58/U Coax...
- Page 6 Interconnect Diagram for EWPA 5200 Pre-amplifier Installation Receiving Antenna (Discone) EWPA 5200 (Mast mount) “To Receiver” RG 58/U jumper “To Active Ant” BNC(M) to N(M) YOUR RSM 2000 LMR-240/UF Jumper LMR-240/UF Coax N(M) to N(M) RECEIVER UHF input N(M) to BNC(M) “DC Supply”...
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Page 7: Operation
Warning! Rough handling during the Installation of the coax cables may create the possibility for open or short circuits within the coax and connectors. Do not attempt to apply DC power until all cables have been checked for continuity and short circuits with an ohmmeter. - Page 8 No signal output from the antenna - • Using a Volt Ohm Meter (VOM), check the DC supply output at the connector. The output voltage should be 12 VDC +/- 0.5 V. The center connection is positive. • Check the “To active antenna” output of the RSM-2000 +12V in the same manner as the DC power supply.
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