Telex Communications Hy-Gain 205B-S Instruction Manual Download | Manualshive

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Summary of Contents for Hy-Gain 205B-S

Page 1: ...m Length 75 i 1905 mm Longest Element 39 1006 mm Net We ght 2 9 lbs 1 3 kg Turning Radius Max 7311 1854 mm Wind Survival 80 mph 129 kmph Mast Diameter 1 to 2 1 1 6 O D 41i mm to 52 mm Boom Diameter 1 O D 32 mm Wind Area 0 585 sq ft 054 m2 horizontal 0 740 sq ft 0688 m2 vertical Electrical Gain Average 11 3 dBi 9 dBd Front to Back Ratio 20 dB Maximum SWR 2 1 Band Width 4 MHz Maximum Power 250 Watts...

Page 2: ...is pretuned for maximum gain and best radiation pattern at 146 MHz This setting will give optimum performance over the entire 144 148 MHz band If you wish to optimize the antenna for a frequency higher than 146 MHz cut off of the total element lengths for each MHz higher than 146 Driven Element SWR can be lowered to less than 1 2 1 at a desired frequency by carefully trimming the driven element Ke...

Page 3: ...e easily stacked for approximately 3 dB more gain each time the number of yagi is doubled Refer to Figure 3 for stacking and phasing harness cutting information The two phasing lines coming from the two antennas to the T connector can be any odd multiple of wavelength in the 75 ohm transmission line See Figure 4 NOTE When phasing two antennas the Driven Element halves that are connected directly t...

Page 4: ...ts of considerable mass or length are detrimental to the performance of the antenna WARNING Do not allow any part of the antenna to touch power lines This could cause severe burns or fatal injuries When mounting two dissimilar antennas on the same mast be sure they are separated by at least six feet eight to ten feet is even better The antenna can be mounted either vertically or horizontally for F...

Page 5: ...tem No 16 21 23 24 26 Description Bolt hex head 20 x 1 1 Nut hex r5 18 Nut hex 20 Lockwasher split 5 Lockwasher internal Figure 5 Boom to Mast Clamp Assembly I I I I 11 3 11 ELEMENT U 16 I I Figure 5 DETAIL A Parasitic Element Attachment 5 A0 0205 A 007 Item No Description 1 Tube Boom aluminum x 75 18 Eyebolt J 5 II10 24 X 1 I 22 Nut hex 1110 24 25 Lockwasher internal 1110 27 Half Washer aluminum ...

Page 6: ... Leave the inside holes for the two U bolts which will be used later for mounting the mast Select either the vertical or horizontal mounting position Adjust the boom accordingly before tightening the bolts securely Select the 3 16 x 39 R1 tube Item No 6 use pencil to place a mark at the center of the rod 19 13 15 from either end and place two more marks from each side of the center mark Place a 10...

Page 7: ...stall caplugs on the ends of the boom and the Driven Element Use the 10 x screw Item No 20 to fasten the beta rod shorting clip over the beta rod as shown in Figure 5 Detail B Select the following rods 01 361 s long Item No 7 02 35 long Item No 8 and 03 35 long Item No 9 Mark the center point on each rod then make two more marks on either side ofthe center mark Secure the elements to the boom as s...

Page 8: ... 2 15 540067 U Bolt 0 16 18 x 3 2 16 505266 Bolt hex head 20 x 4 17 500164 Bolt hex head 1110 24 x 2 1 18 540065 Eyebolt 5 s 1110 24 x 1 4 19 500159 Boll hex head 1110 24 x 1 2 20 510670 Screw pan head Type A 1110 x 3 s 1 21 555747 Nut hex 5 1s 18 4 22 554071 Nut hex 10 24 11 23 554099 Nut hex 1 4 20 4 24 564792 Lockwasher split 5 1s 4 25 565697 Lockwasher internal II10 12 26 562961 Lockwasher int...

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