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Element one or three only (pattern can reverse):

Figure 9

EZNEC+ ver. 5.0

--------------- SOURCE DATA ---------------

Frequency = 7.1 MHz

Source 1

Voltage = 252.1 V at 32.82 deg.

Current = 7.08 A at 0.0 deg.

Impedance = 29.93 + J 19.3 ohms

Power = 1500 watts

SWR (50 ohm system) = 2.024 (75 ohm system) = 2.701

Содержание DXE-PS-2B-P

Страница 1: ...Phasing System DXE PS 2B P DXE PS 2B P INS Revision 1f DX Engineering 2014 1200 Southeast Ave Tallmadge OH 44278 Phone 800 777 0703 Tech Support and International 330 572 3200 Fax 330 572 3279 E mail...

Страница 2: ...n Generally stacked Yagi antennas are separated vertically greater than 1 2 wavelength free space The bottom antenna should generally be as high above ground as the stack spacing distance Optimum spac...

Страница 3: ...tolerances in cable lengths cutting similar cables to equal lengths will suffice There is no need to closely phase match cables Larger Array Building Blocks The DXE PS 2B P Pro Stack Broadband Two Ant...

Страница 4: ...pply the latest manual revision with each product Occasionally a manual will be updated between the time your DX Engineering product is shipped and when you receive it Please check the DX Engineering...

Страница 5: ...g and lower wave angles The lowest antenna should generally be significantly higher than the antenna to antenna spacing above ground for maximum stacking gain Greatly increased height produces more mi...

Страница 6: ...5 Figure 2 Maximum gain at 8 degree elevation Figure 3 Maximum gain at 6 degree elevation...

Страница 7: ...ecipitation static during inclement weather by disconnecting the upper antenna Pattern would depend on the type of antenna and antenna height Out of Phase Out of phase stacking is more effective at ra...

Страница 8: ...hase pattern changing to out of phase can result in almost 40 dB increase in field strength In the pattern above Blue is out of phase Red is in phase This pattern demonstrates why the real advantage i...

Страница 9: ...Figure 7 shows the proper radial system for three verticals with the radial systems bonded together where they would intersect Elements 1 and 3 out of phase in this special case middle element has no...

Страница 10: ...y pattern can reverse Figure 9 EZNEC ver 5 0 SOURCE DATA Frequency 7 1 MHz Source 1 Voltage 252 1 V at 32 82 deg Current 7 08 A at 0 0 deg Impedance 29 93 J 19 3 ohms Power 1500 watts SWR 50 ohm syste...

Страница 11: ...94 J 18 69 ohms Power 750 watts SWR 50 ohm system 2 781 75 ohm system 3 822 Total applied power 1500 watts The next band above the design spacing band such as 20 meters with 40 meter optimized spacin...

Страница 12: ...shown to the right Strip approximately 1 4 insulation from the four conductor wire ends as shown to the right Connect each wire to a terminal by sliding the wire completely into the wire connection ho...

Страница 13: ...quality CAT5e cable 4 twisted pairs of 24 AWG wire for runs up to 1000 feet Typical DX Engineering BCD control lines requirements are 12 VDC at 25 milliamps Depending on the number of control lines n...

Страница 14: ...cables to the tower to relieve strain and gently droop the cables to form a drip loop do not use tight bends with coaxial cable Note Do not seal the green connector The connector is recessed inside a...

Страница 15: ...products can be used for this purpose UMI 81343 Anti Seize 1 oz Squeeze Tube UMI 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 Grad...

Страница 16: ...ssue 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 wri...