DX Engineering DXE-BFS-1 Скачать руководство пользователя страница 11

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DXE-RTR-1A   Receive Antenna Interface for Transceivers

 

Now you can add a dedicated receive antenna to HF transceivers which lack a separate RX antenna input port - or 
protect an un-switched RX ANT port on your transceiver! The DXE-RTR-1 Receive Antenna Interface (Patent 
Pending) is a unique multi-purpose switch unit which automatically or manually switches the RF output antenna 
connector on any HF transceiver between a separate receiving antenna system and a standard transmitting antenna. The 
switching is fast enough - about 4 ms. - to allow QSK CW operation.  In its simplest application, it allows you to add a 
receiving preamp to improve reception of those really weak ones!  The DXE-RTR-1 enables operators to enjoy the 
improved reception that a low noise receiving antenna system offers. Connection to a Beverage, Receive Four-Square, 
Active Receive Antenna, and other receiving antennas and accessories is now possible, safely, only with the DXE-RTR-
1. 
 
Requires 12 VDC for operation, or order DXE-PSW-12D1A AC adapter. 

•Attractive Heavy Stainless Steel Enclosure 
•200 Watt Switching Capability 
•Supports CW full break in  
•Main Antenna has SO-239 connector 
•Receive Outputs use RCA phono and Type F connectors 
•Safe switching - transmit antenna is always connected to transceiver on power-off  
•Hot switching lockout - disables receive antenna during transmit mode 
•Versatile - allows inclusion of RF Preamps and other RX accessories 

 
 

ARR-8560  -  ARRL ON4UN's Low Band DXing, 5th Edition

 

The fifth edition features new and updated material. 

Highlights include…

  

…a thoroughly revised discussion of 

receiving antennas.

 You’ll discover how to greatly enhance their operational 

bandwidth. In addition, low-signal transformers for Beverages and other receive-only antennas are analyzed in great 
detail, along with effective common-mode filters.  
…a new examination of 

phased arrays

, with new concepts such as the hybrid-fed 4-square array and opposite-voltage 

feed system. This is a must-read for every serious antenna builder!  
…dozens of new propagation maps based on DX Atlas, as well as an in-depth analysis of the influence of sunspot 
cycles on 160-meter ducting.  
…a new discussion of cutting edge technology including 

Software Defined Radio

 and the revolutionary 

LP-500 

Digital Station Monitor.

  

 
Contents:

 

 

Propagation  

 

DXing on the Low Bands  

 

Receiving and Transmitting Equipment  

 

Antenna Design Software  

 

Antennas: General, Terms, Definitions  

 

The Feed Line and the Antenna  

 

Receiving Antennas  

 

The Dipole Antenna  

 

Vertical Antennas  

 

Large Loop Antennas  

 

Phased Arrays  

 

Other Arrays  

 

Yagis and Quads  

 

Low Band DXing from a Small Garden  

 

From Low Band DXing to Contesting 

 

 

CD-ROM included!

 The CD-ROM includes the entire book in a fully searchable PDF format as well as ON4UN’s 

software (Windows XP only), antenna modeling files, photographs and more.

Содержание DXE-BFS-1

Страница 1: ...em DXE BFS 1 Patent Pending DXE BFS 1 INS Revision 3c DX Engineering 2017 1200 Southeast Ave Tallmadge OH 44278 USA Phone 800 777 0703 Tech Support and International 330 572 3200 Fax 330 572 3279 E mail DXEngineering DXEngineering com ...

Страница 2: ...1 coaxial cable connection uses an industry standard CATV F type connector The DXE BFS 1 sets itself apart from competitive products by combining quality components and superior technology inside a compact metal housing Features 100 kHz to 30 MHz operating range Integral spark gaps built into the internal printed circuit board minimize damage from lightning Wing nut terminals eliminate soldering M...

Страница 3: ...Supports can be metallic but the antenna wire must be insulated from them Specifications Operating Frequency 100 KHz to 30 MHz Input Impedance 400 500 Ω Output Impedance 30 100 Ω 75 Ω recommended Common Mode Isolation 20 30 dB feedline and antenna Power Handling 20 watts continuously or 200 watts for 5 seconds Termination Resistance 400 500 Ω Installation We strongly suggest that you read the enti...

Страница 4: ... To ground the antenna run a wire from the terminal of the DXE BFS 1 to the ground rod or rods The antenna system is NOT grounded through the metal case Feedline terminals are engineered to be ground independent of the metal housing and whatever that housing is mounted on DO NOT ground the case to the antenna ground since that will connect the feedline shield to the antenna system and possibly inc...

Страница 5: ...nstall the antenna wires 5 8 feet above the ground It is not necessary to follow the contour of the land because small hills ravines and ditches generally do not affect the antenna Contrary to popular belief sloping the antenna wire does not improve performance The picture shown uses typical electric fence wire holders mounted on top of wooden posts with the beverage antenna wire strung through Co...

Страница 6: ...connections and follow all appropriate wiring codes for grounding where cables enter a building Bury the feed cable for 10 feet or more when approaching the feedpoint or ground the feedline shield to a separate ground rod Termination The far end of the antenna must be terminated typically at 450 to 500 Ω or the antenna will not have the optimum F B ratio Failure to terminate the antenna always res...

Страница 7: ...er to test the antenna the termination and the DXE BFS 1 as a single entity Properly functioning systems will show a reasonably constant SWR value over several bands The SWR does not have to be low it is typically under 1 8 1 but should change gradually over large variations in frequency For more information about Beverage construction see ON4UN s book on Low Band DX ing ...

Страница 8: ...1 connected to a radio that does not have a Receive Antenna Input This set up allows switching between a transmit antenna and the beverage antenna using the DXE RTR 1A Receive Antenna Interface Refer to the DXE RTR 1A Receive Antenna Interface manual for more information ...

Страница 9: ...tact with the environment than bare wire Heavy 14 AWG stranded copper antenna wire 1000 foot bulk length spool UV resistant relaxed black PVC insulation Reduces precipitation static Long reliable life DXE RPA 1 Receiver Preamplifier 0 3 35 MHz This is the best HF low noise amplifier available The RPA 1 is optimized for 0 3 35 MHz operating range The push pull amplifier design and robust components...

Страница 10: ...ool such as the DXE SNS CT1 to install the connectors Normal crimping tools or pliers will not work DXE UT KITF F Connector Coaxial Cable Prep Tool Kit This cost saving kit provides a handsome convenient carrying case complete with the DX Engineering F 6 coaxial cable prep tools and accessories It features a rugged lockable enclosure fitted with a precut foam insert with a home for each tool The D...

Страница 11: ... lockout disables receive antenna during transmit mode Versatile allows inclusion of RF Preamps and other RX accessories ARR 8560 ARRL ON4UN s Low Band DXing 5th Edition The fifth edition features new and updated material Highlights include a thoroughly revised discussion of receiving antennas You ll discover how to greatly enhance their operational bandwidth In addition low signal transformers fo...

Страница 12: ...riting 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...

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