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DX DXE-TFS4-160B, Manual

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DX DXE-TFS4-160B Manual Download Page 1

 
 
 

 
 

 

Transmit Four Square System  

 

Phasing Unit and Four Square Control Console 

 

DXE-TFS Series for 160, 80 or 40 Meters 

DXE-TFS4-160B, DXE-TFS4-80B, DXE-TFS4-40B 

 

DXE-TFSB-INS Revision 1a

 

 
 
 

 

 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 

© DX Engineering 2013 

1200 Southeast Ave. - Tallmadge, OH  44278  USA 

Phone: (800) 777-0703 ∙ Tech Support and International: (330) 572-3200 

Fax: (330) 572-3279 ∙ E-mail: [email protected] 

Summary of Contents for DXE-TFS4-160B

Page 1: ...S Series for 160 80 or 40 Meters DXE TFS4 160B DXE TFS4 80B DXE TFS4 40B DXE TFSB INS Revision 1a DX Engineering 2013 1200 Southeast Ave Tallmadge OH 44278 USA Phone 800 777 0703 Tech Support and Inte...

Page 2: ...tion 27 Turn On and Test 27 Power ON Relay Exercise 27 LED Brightness 28 Using the Transmit Four Square System Phasing Unit 28 Manual Updates 29 Optional Items 29 Technical Support and Warranty 32 Tab...

Page 3: ...easures 1 4 wavelength on a side The antennas must be located as described in the installation section to provide switchable patterns in desired directions The forward lobes are reasonably wide elimin...

Page 4: ...c failures caused by relay transfer while the amplifier is activated The DXE CC 4SQR Control Console allows you to call for pattern changes while transmitting without damaging relay contacts Features...

Page 5: ...650 MHz enabling you to test your transmitter without radiating a signal on the air DC to 650 MHz Handles short term RF power up to 1500 watts Dummy Load coaxial cable is available in any custom lengt...

Page 6: ...nt from the free space length of the square sides This is because the cables have a different velocity factor than air Radio frequency signals move through the cables slower than they move through air...

Page 7: ...ion of DX Engineering rugged 6063 T832 aluminum tubing and all stainless steel element clamps The bottom section is heavy wall 2 inch OD graduating up to 2 1 8 inch and back to 2 inch for the first 12...

Page 8: ...d power lines or other electric lighting or power circuits or where they can come into contact with such circuits in the event of an accident or mechanical failure NEVER INSTALL AN ANTENNA WHERE IT CA...

Page 9: ...area for guying and radial systems extending away from the four antennas The Four Square Layout The four monoband vertical antennas making up the four square system must be properly positioned You mus...

Page 10: ...ers Typical Center Frequency MHz Distance between antennas 1 4 wavelength at the Center Frequency Meters Feet 160 1 830 41 0 134 4 1 845 41 0 133 3 1 950 38 5 126 2 80 75 3 550 21 1 69 3 3 560 21 1 69...

Page 11: ...array is directional across its diagonals The Four Square System Phasing Unit is located in the center of the square Connections from the Four Square System Phasing Unit to the antennas must be equal...

Page 12: ...a elements 1 and 2 along with vertical antenna elements 3 and 4 pointing North Note This array like all four squares has a fairly wide flat forward lobe This means exact direction headings are general...

Page 13: ...will be no improvement in the signal to noise ratio If the noise originates in the near field of the antenna everything becomes unpredictable This is a good case for placing separate receiving antenna...

Page 14: ...be located near the center of the array through a 50 coaxial cable Placing the dummy load near the operating position allows monitoring of dump power or use of the load for other applications The 50...

Page 15: ...r 4 Vertical Element Coaxial Cable DXE 11U 75 foam coaxial cable from each vertical antenna to the Four Square System Phasing Unit must be 1 4 wavelength long electrically The electrical dimension of...

Page 16: ...om the Four Square Control Console to the Four Square Phasing Unit For control cable runs from 400 feet up to 750 feet doubling up the wire pairs of the DXE CW9 CAT5 cable two wires per connection wil...

Page 17: ...ally only a fraction of a dB when more than 40 radials are compared to 20 30 radials In any event it is never necessary to use more than 50 or 60 radials Dozens of studies have proven there is very li...

Page 18: ...quickly overgrow the radials and it will be virtually impossible to see them An article describing this process is available on the DX Engineering website Radials can also be buried just under the sur...

Page 19: ...or resonance at 3 51 MHz Measure the physical dimensions of this antenna Physically build each of the three remaining vertical antennas to the same resonant frequency at the same target impedance usin...

Page 20: ...itch LED brightness may be set by pushing and holding the OMNI button for several seconds While holding the OMNI button all the LED s will be illuminated and then start flashing Release the OMNI butto...

Page 21: ...If you turn power OFF wait about 8 seconds allows internal capacitors to discharge then turn power ON the system will not run the relay exercise routine To turn the factory default ON 1 Turn power ON...

Page 22: ...ur Square Control Console or you can use the custom label that is included The number one default position on the Transmit Four Square Controller is the first red push button on the left Depending on...

Page 23: ...onsole This jack connects to your amplifier s keying or relay line input The keying signal has essentially no delay on pass through If you switch antenna positions while transmitting the controller wa...

Page 24: ...Four Square System Phasing Unit Wire A to A B to B C to C and either G to either G both Gs are Ground Output current is 700 mA maximum on any or all ports The output is relay protected for maximum li...

Page 25: ...bles with PL 259 connectors on each end Customer to specify center frequency DXE Q75 80 4P 4 1 4 Electrical Wavelength 75 80 meter 75 coaxial cables with PL 259 connectors on each end Customer to spec...

Page 26: ...e Four Square Phasing Unit For control cable runs from 400 feet up to 750 feet doubling up the wire pairs of the DXE CW9 CAT5 cable two wires per connection will effectively make the wire gage go from...

Page 27: ...he opposite direction Once the directional switching has been proven you should check SWR SWR should be under 1 3 1 If SWR is good you can run on the air tests with stations either on groundwave withi...

Page 28: ...ransmit to Receive mode This avoids hot switching Using the Transmit Four Square System Phasing Unit Each operator develops his own technique for using the directional capability of the Transmit Four...

Page 29: ...lyethylene OD 305 Outer Shield 97 coverage Bare Copper Braid Outer Jacket Black Low Density Polyethylene Overall Nominal Diameter Overall Nominal Diameter 0 405 Nominal Velocity of Propagation 84 Part...

Page 30: ...nd prevent galling UMI 81343 DXE NSBT8 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...

Page 31: ...tie equipment back to a common ground point Copper strap should also be used to make a non resonant counterpoise for towers mounted on mountaintops or other rocky terrain Copper strap has lower induc...

Page 32: ...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 warrante...

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