DX Engineering DXE-RR2X8B Instructions manual

2 x 8 Remote Antenna Switch
DXE-RR2X8B
DXE-RR2X8B-INS Revision 0d
© DX Engineering 2020
1200 Southeast Ave. - Tallmadge, OH 44278
Phone: (800) 777-0703 ∙ Tech Support and International: (330) 572-3200
Fax: (330) 572-3279 ∙ E-mail: DXEngineering@DXEngineering.com
Introduction
When selecting the various switch positions, the Main has precedence. This means if the Main selects
output port #3, the Secondary cannot use port #3 at the same time.
Secondary will then be transmitting to an open
Another example would be if the Secondary has selected port 5 and you are transmitting, and the Main
then selects port 5, the Main takes port 5 and Secondary will then be transmitting into an open.
The DXE-RR2X8B is a dual 8-port switch designed to switch coaxial lines in low to medium­power RF systems typically used in a Single Operator - Two Radio (SO2R) environment.
The DXE-RR2X8B allows the user to switch inputs from either Main or Secondary radio to two of the eight output ports using 1 of 8 logic inputs. The logic high required for switching is +12 Vdc at 100 mA. A switching time of less than 15 ms is normal.
The DXE-RR2X8B is intended to be interfaced with a customer supplied logical switching unit. The logical switching unit used should provide for protection against hot switching and to prevent attempts at the Main or Secondary from selecting the same output port at the same time. The DXE-
RR2X8B contains no internal logic or T/R switch sensing for transmit protection.
Features
Enclosed relays provide exceptional performance and are moisture resistant. The RR2X8B can be used to simultaneously select multiple output ports as well as conventional one-of-eight antenna switching. This allows the RR2X8B to be used in complex antenna systems as well as traditional switching arrangements. Ports that are not selected are grounded.
The RR2X8B also uses removable screw terminals for the control cables. The removable plugs greatly simplify installation by eliminating the need for soldering. Disassembly is not required for control wiring access.
The RR2X8B also offers the following features:
RF Shielded Weatherproof Housing - unique protection Excellent Port-to-Port Isolation; greater than 70 dB at 30 MHz, worst case. Ports not selected are grounded High-RF tolerant UHF connectors Enclosed 16-ampere RF relays Safe 12-volt relay operation 16 MOVs for surge protection on control lines 16 RF bypass capacitors Includes one DXE-SSVC-2P Stainless Steel V-Clamp for mounting
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Specifications
Power Rating: 6 kW ICAS all modes, under 2:1 SWR, 4 kW CCS all modes, under 2:1 SWR Control Voltage: +10-14 Vdc at 100 mA per port Port-to-Port Isolation: >70 dB below 30 MHz, >60 dB below 60 MHz
Ports Not Selected: Are Grounded Loss: <0.3 dBm below at 52 MHz Impedance: 50 ohms Dimensions: 10.375" x 9.875" x 4.375" and the mounting flange hangs down 2.25" Control Line: Dual 8-wire line larger than #24 for runs up to 500 ft. (or 9-conductor for
dedicated ground). When using 8-conductor wire the feedline serves as a ground return. Use of two DXE-CW9 CAT-5 or standard low voltage control wiring, such as telephone wire, is acceptable.
General Information
The DXE-RR2X8B uses a dual star arrangement of 24 relays to select one or more of eight output ports when voltage is applied from two 8-wire control lines.
The 24 relays provide greatly improved power handling, port-to-port isolation and SWR over conventional switches and allow connection between any of the eight antenna output ports from either the Main or Secondary input ports.
The system offers virtually no loss at HF and excellent low-loss performance (less than 0.16 dB loss on six meters).
Installation
1. Secure the RR2X8B switching unit using the included DXE­SSVC-2P stainless steel V-Saddle Clamp. For outdoor installations or in moist environments, connectors must face downward. Use Jet-Lube SS-30, Never-Seez® or Anti-Seize on all stainless steel hardware to prevent galling.
2. Fasten all cables to the mounting mast or tower to relieve strain, and gently droop the cables to form a drip loop (do not use tight bends with coaxial cable). Install the RR2X8B with the connectors facing down and use gradual bends or loops in heavy wires. If the RR2X8B is mounted to a wooden pole or building, a wide copper flashing or heavy wire or strap should be connected from the mounting bracket to a good ground.
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3. Wire the two plugs making a note of wire colors at each pin. Write them in the Connector Wire
M = MAIN Connector Wire Reference Table
G 1 2 3 4 5 6 7 8
G
S = SECONDARY Connector Wire Reference Table
G 1 2 3 4 5 6 7 8
G
Reference Table below. Either "G" is ground.
The green connectors are in two parts and the tops part can be removed by
pulling it straight off. This will allow easier wire replacement or servicing as needed. When pushing a connector back in place, ensure you press straight inward.
M = Main S = Secondary
DXE-CW9 Shielded CAT5 cable can be used. The shield is used as the signal ground return. Adhering to a logical standard allows people unfamiliar with a system to troubleshoot with minimal difficulty.
For DXE-CW9 shielded CAT5 cable we suggest working your way up through the pairs by ascending color: brown, brown/white, orange, orange/white, green, green/white, blue, and blue/white.
The ground wire can be omitted if the DXE-EC-8 control console or the DXE-CC-8A control console or other switching voltage source is grounded to the feedline. The feedline shield and equipment grounds provide the ground path. Note: The total loop resistance of the control cable
path must be under 30 ohms for reliable operation. .
Note: Do not seal the green connectors! The green connectors are recessed inside
a drip edge that prevents water from getting into connectors. The cover-to-
connector plate junction is not sealed so the unit can "breathe” and
eliminate condensation.
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Control
When selecting the various switch positions, the Main has precedence. This means if the Main selects
output port #3, the Secondary cannot use port #3 at the same time.
Secondary will then be transmitting to an open
Another example would be if the Secondary has selected port 5 and you are transmitting, and the Main
then selects port 5, the Main takes port 5 and Secondary will then be transmitting into an open.
The DXE-RR2X8B allows the user to switch inputs from either Main or Secondary to the eight output ports using 1 of 8 logic inputs. The logic high required for switching is +12 Vdc.
A very simplified schematic is shown:
Main selection always takes precedence. Main and Secondary can never use the same output port at the same time (See notes above). (Ports not selected are grounded)
Caution: Never switch antennas while transmitting. Hot switching with power will create a sustained arc that damages relay contacts. When switching ports, allow 15 ms before transmitting to avoid damaging the
switch. This type of damage is NOT covered under warranty.
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Notes:
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Optional Items
*JTL-12555
Jet-Lube SS-30
*PTX-81343
Anti-Seize, 1 oz. Squeeze Tube
*PTX-81464
Anti-Seize, 8.5 oz. Aerosol Can
*DXE-NSBT8
Never-Seez, 8 oz. Brush Top
*DXE-NMBT8
Never-Seez, 8 oz. Brush Top, Marine Grade
DXE-CW9S - Shielded Control Wire, 9 conductor stranded, per foot
DXE-CW9S is a high quality shielded outdoor cable. It features 9 #24 AWG stranded conductors with aluminum foil shielding plus a #24 stranded tinned copper drain wire. This gives you 8 switch positions plus common ground ­ plus the separate shield. It has a gray PVC jacket. This cable is ideal for DX Engineering Remote Antenna Switches and Four Square arrays, and should be considered for any low-current custom remote switching application you have
- such as receiving antenna arrays. Order by the foot in the length you require. Price shown is per foot.
A nice feature is the "rip cord", which allows for easy stripping of the heavy jacket without worry about nicking or accidentally cutting the conductors.
DXE-CW9-1K - Shielded Control Wire, 9 conductor, 1000 ft reel DXE-CW9 - Shielded Control Wire, 9 conductor, per foot
DXE-CW9-1K is a 1000 foot box of high quality shielded outdoor FTP (Foil Twisted Pair) Cat5e cable. It features 4 twisted pairs of 24 AWG solid wires with Al foil shielding plus a solid tinned copper drain wire - providing a total of 9 conductors for DC switching applications. It has a polyethylene jacket and is rated for direct burial. This cable is ideal for DX Engineering Remote Antenna Switches and Four Square arrays, and should be considered for any low-current custom remote switching application you have - such as receiving antenna arrays. A nice feature is the "rip cord", which allows for easy stripping of the heavy jacket without worry about nicking or accidentally cutting the conductors. Excellent for use in all outdoor applications of switching, networking, data transfer and phone lines. As a data transfer line, it supports 10/100/1000Mbps.
Jet Lube AA-30, Anti-Seize & Never-Seez
An Anti-seize compound MUST be used on any Stainless Steel nuts, bolts, clamps or other hardware to prevent galling and thread seizure. Any of these products can be used for this purpose.
* These products are limited to domestic UPS Ground shipping only
SUM-900031 - Automatic Wire Stripper/Crimper/Cutter, 24-10 Ga.
Our DX Engineering wire stripper uses a spring-loaded design to make quick work of wires ranging
from 24 to 10 gauge. Just insert the wire, squeeze the handle, and listen for the click. That’s the
sound of another perfect wire stripping job performed in about 2 seconds- a fraction of the time it takes your pocket knife to do the same job. An adjustable wire length guide helps you make uniform strips, and a built-in wire cutter and crimper helps you complete your wiring job. Spring-loaded design
Strips wires ranging from 24 to 10 gauge built-in wire cutter and crimper
KLE-11055 - Klein-Kurve Wire Stripper / Cutter 11055, 18-22 AWG
Klein Tools Klein-Kurve wire strippers are ideal for stripping solid (10-18 AWG) and stranded (12-20 AWG) wire cleanly and easily. The 7-1/8 in. strippers also have precise shear-type blades to cut copper wire nicely, easy-to­read markings on both sides, and extra-soft grips and curved handles for comfort.
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Technical Support
If you have questions about this product, or if you experience difficulties during the installation, contact DX Engineering at (330) 572-3200. You can also e-mail us at:
DXEngineering@DXEngineering.com
For best service, please take a few minutes to review this manual before you call.
Warranty
All products manufactured by DX Engineering are warranted to be free from defects in material and workmanship for a period of one (1) year from date of shipment. DX Engineering’s sole obligation under these warranties shall be to issue credit, repair or replace any item or part thereof which is proved to be other than as warranted; no allowance shall be made for any labor charges of Buyer for replacement of parts, adjustment or repairs, or any other work, unless such
charges are authorized in advance by DX Engineering. If DX Engineering’s products are claimed to be defective in
material or workmanship, DX Engineering shall, upon prompt notice thereof, issue shipping instructions for return to DX Engineering (transportation-charges prepaid by Buyer). Every such claim for breach of these warranties shall be deemed to be waived by Buyer unless made in writing. The above warranties shall not extend to any products or parts thereof which have been subjected to any misuse or neglect, damaged by accident, rendered defective by reason of improper installation, damaged from severe weather including floods, or abnormal environmental conditions such as prolonged exposure to corrosives or power surges, or by the performance of repairs or alterations outside of our plant,
and shall not apply to any goods or parts thereof furnished by Buyer or acquired from others at Buyer’s specifications.
In addition, DX Engineering’s warranties do not extend to other equipment and parts manufactured by others except to
the extent of the original manufacturer’s warranty to DX Engineering. The obligations under the foregoing warranties
are limited to the precise terms thereof. These warranties provide exclusive remedies, expressly in lieu of all other remedies including claims for special or consequential damages. SELLER NEITHER MAKES NOR ASSUMES ANY OTHER WARRANTY WHATSOEVER, WHETHER EXPRESS, STATUTORY, OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NO PERSON IS AUTHORIZED TO ASSUME FOR DX ENGINEERING ANY OBLIGATION OR LIABILITY NOT STRICTLY IN ACCORDANCE WITH THE FOREGOING.
©DX Engineering 2020
DX Engineering®, DXE®, DX Engineering, Inc.®, Hot Rodz®, Maxi-Core®, DX Engineering THUNDERBOLT®, DX Engineering Yagi Mechanical®, EZ-BUILD®, TELREX®, Gorilla Grip® Stainless Steel Boom Clamps, Butternut®, SkyHawk™, SkyLark™, SecureMount™, OMNI-TILT™, RF-PRO-1B®, AFHD-4® are trademarks of PDS Electronics, Inc. No license to use or reproduce any of these trademarks or other trademarks is given or implied. All other brands and product names are the trademarks of their respective owners.
Specifications subject to change without notice.
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