Shively Labs 6810 Скачать руководство пользователя страница 17 | Manualshive

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11

Antenna Installation

Figure 5. XXL radome

installation



(radome, closure plates and

ground straps)

1

Top radome half

8

Backplate

2

Bottom radome half

9

Feedline

3

Radome flange hardware

14

Bay radiator

4

Closure plate hardware

16

Radome-backplate hardware

5

Closure plate hardware

17

Top ground strap

6

Top closure plate

18

Band clamp (2)

7

Bottom closure plate

19

Bottom ground strap

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16
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Содержание 6810

Страница 1: ...Circularly Polarized FM Broadcast Antenna Model 6810 Instruction Manual Installation Operation Maintenance ...

Страница 2: ...ts Our technical staff has a wealth of experience in the broadcast industry and is standing by to serve you in any way This manual is intended to give you a good basic understanding of your antenna its proper and safe installation startup and operation and trouble shooting and maintenance information to keep it working satisfactorily for years to come Please have everyone involved with the antenna...

Страница 3: ...this manual in its entirety before beginning installation of your antenna Failure to follow the installation and operation instructions in this manual could lead to failure of your equipment and might even void your warranty ...

Страница 4: ......

Страница 5: ...XL radome installation backplate and bay radiator 12 Figure 7 XXL radome installation tower mounts 13 Installing the feedline assemblies on the tower 14 Figure 8 Common feedline mount configurations 15 Figure 9 Feedline flange detail 16 Installing the transformer 17 Figure 10 Transformer Installation top view 17 Installing parasitic elements if applicable 17 Chapter 3 De Icer Installation if appli...

Страница 6: ... rod settings 30 System sweep recommended 31 Checkout 31 Antenna operation 32 De icer system operation 32 Shively Labs de icer control system 32 Chapter 5 Maintenance 33 Precautions 33 Maintenance log 33 Physical inspection 33 De Icer check 34 Paint 34 Radiator removal for repair 34 Return policy 34 Troubleshooting 34 Internal arcing 34 Broad spectrum RF noise 34 High VSWR at startup or during ope...

Страница 7: ... or otherwise Take pains to keep the antenna components dry You will need to purge mois ture from the interior of the antenna components before applying trans mitter power and purging will be much more time consuming if the components get wet Unpacking a Find Box 1 it is marked Open This Box First It contains the transformer and two copies of the installation drawing The parts list on one sheet of...

Страница 8: ...quency of the antenna Fit of the mounts to the tower members Freedom from interference by gussets leg flanges guys and their attachment points tower face members obstruction lights and other components Compatibility of transmission line and antenna input terminals Location of the transmission line run relative to the antenna input terminal Use of non metallic guy sections on the tower in the regio...

Страница 9: ...its stenciled bay numbers and its up arrow sticker Study your antenna CAUTION These procedures are guidelines Assemble components exactly in accordance with the installation drawing If you don t the antenna may not perform as expected It will be easiest to mount the radiators feedline mounts and radomes if applicable onto the feedline sections before the feedline sections are mounted on the tower ...

Страница 10: ... 2 Study your installation drawing There is a detail identifying the correct azimuth rotation of the antenna bays from the tower mounting surface 3 Now look at the feedline with its upper and lower mount flanges The upper feedline mount flange has a series of notches cut into it Figure 1 The center notch is exactly opposite the baymount flange Each notch represents five degrees 5 of azimuth rotati...

Страница 11: ...lace in the inner conductor of the baymount flange of the feedline NOTE Feedline flange hardware and O ring are shipped separately in a plastic bag Each bag contains the hardware and O ring for one flange CAUTION Be sure the baymount flange O ring is properly seated in its groove and not pinched between the flange contact surfaces 4 Coat the baymount flange O ring lightly with O Lube supplied with...

Страница 12: ...radiator b Clamp the mounting saddle to the feedline using a band clamp NOTE The bay saddle is only used on radiators with partial radomes as shown in Fig ure 2 See Figure 4 or Fig ure 6 for installation of radiators with standard or XXL radomes ...

Страница 13: ...atch marked in pairs A A B B etc In order to align the flange bolt holes be sure to pair them according to their match markings a Select a pair of radome halves match marked with the same letter designation A and A B and B etc The top 1 and bottom 2 radome halves include the radome mounted halves 3 and 4 of the radome mounting brackets b Open the hardware kit The kit contains hardware 5 1 4 20 for...

Страница 14: ... 1 Top radome half 7 Bracket mounting hardware 2 Bottom radome half 8 Feedline mount flange 3 Top radome bracket 9 Top radome bracket 4 Bottom radome bracket 10 Bottom radome bracket 5 Radome flange hardware 11 Bay radiator 6 Radome bracket hardware 12 Baymount ...

Страница 15: ...e mounting bracket halves together NOTE You may have to squeeze the radome flanges together slightly with a clamp to start the nuts Get all these nuts and bolts in place before tight ening them 4 Fasten the two radome halves together loosely with the radome flange hardware 5 starting near the feedline and working around both sides to the outer edge It may be necessary to squeeze the radome flanges...

Страница 16: ...the feedline mount flange using the 3 8 backplate hardware 12 c Install the bay radiator 1 Install a lightly lubricated O ring 13 into the O ring groove in the baymount flange 2 Install the radiator 14 onto the baymount flange making sure the O ring remains within the groove and is not pinched between the flange surfaces 3 Secure the radiator using the baymount hardware 15 d Install the radome 1 P...

Страница 17: ... straps 1 Top radome half 8 Backplate 2 Bottom radome half 9 Feedline 3 Radome flange hardware 14 Bay radiator 4 Closure plate hardware 16 Radome backplate hardware 5 Closure plate hardware 17 Top ground strap 6 Top closure plate 18 Band clamp 2 7 Bottom closure plate 19 Bottom ground strap ...

Страница 18: ...and ground straps 1 Install the top closure plate hardware 4 through the the top ground strap 17 closure plate 6 and into the threaded hole in the top of the radome 1 8 Radome backplate 12 Backplate hardware 9 Feedline 13 O ring 10 Baymount flange 14 Bay radiator 11 Shims or washers as needed 15 Baymount hardware ...

Страница 19: ...ng the band clamp 18 3 Repeat for the bottom closure plate 7 and the bottom groundstrap 19 f Tighten the closure plate hardware 4 and 5 and the radome backplate hardware 16 1 Top radome half 18 Band clamp 2 2 Bottom radome half 19 Bottom ground strap 8 Backplate 20 Tower mounts 2 9 Feedline 21 Box bolts or 1 2 hardware 8 17 Top ground strap ...

Страница 20: ...ry mounts such as for the transformer or special coax input line sections to make sure they will fit as planned 3 Watch carefully for any interferences by tower members or guy wires which were not accounted for in the design 4 Where the mounts will be in contact with the tower leg s or mounting pole scrape the tower paint away to ensure good electrical contact b Install the feedline sections CAUTI...

Страница 21: ...ure 8 Common feedline mount configurations Mounts may vary from bay to bay especially on tapered towers or where tower obstructions exist See your installation drawing for your mount configuration and special requirements if any ...

Страница 22: ...ags and protective covers from the flanges and install an O ring lubricating it with a light coat of petroleum jelly provided with the antenna NOTE In most cases the mounts are reversible to clear tower cross members and other obstructions 3 Align the mounts to the tower leg s or mounting pole then secure them to the back support mount using box bolts 4 Last secure the mounts to the tower in accor...

Страница 23: ...e The male end with the inner conductor connector in place always goes at the top Transformer mounts are generally similar to feedline mounts and should be installed in the same manner Figure 10 Transformer Installation top view Installing parasitic elements if applicable If your antenna includes parasitic elements these are shown on your installa tion drawing Install them exactly as shown on the ...

Страница 24: ......

Страница 25: ...nts and are not designed to melt ice that has already formed For this rea son Shively Labs recommends that the system be installed with a tower mounted dual setting thermostat assembly Shively Labs Model 55522 G502 and de icer control box Shively Labs Model 94068 that ensure the deicers are operated in the temperature range ice is most likely to form Before beginning de icer installation Remember ...

Страница 26: ...and Figure 11 on page 21 b Connect the leads from each bay de icer to the main harness in that bay s junction box as shown in Figure 12 on page 22 Secure any slack in these cables to the feedline with tie wraps to avoid wind damage c Furnish a tower junction box as shown schematically in Figure 11 to connect the antenna s de icer harness to the main power NOTE Shively recommends the use of shielde...

Страница 27: ...uit size by 1 2 hub size for the harness entry to the tower junction box is packed loose with the de icer harness NOTE Shively recommends the use of shielded braided polyethylene covered wire or rubber sheathed flexi ble metal conduit or rigid conduit and weather tight fittings at all junctions CAUTION Shively Labs s de icer control box Model 94068 is designed for interior installation only ...

Страница 28: ...ure that there are no short circuits Resistance should be infinite 2 Turn the de icer on by switching it to Manual and measure its current draw with an ammeter Compare this reading with Table 2 on page 24 3 Record the resistance and current readings in your maintenance log for future reference in troubleshooting the de icer system See Sample maintenance log on page 37 for a suggested log format ...

Страница 29: ... be sure to have one or both thermostat leads disconnected Otherwise readings may be affected by other components 1 Measure the resistance across the thermostat circuit and from it to ground to ensure that there are no short circuits Test at the location shown in Figure 11 2 Measure the resistance across each heater leg Be sure to add in the resistance of any long cable runs from the control box t...

Страница 30: ...8 6 2 16 7 0 4 Bay 13 8 3 12 9 3 5 Bay 11 10 4 9 11 6 6 Bay 9 12 4 8 13 9 7 Bay 8 14 5 7 16 2 8 Bay 7 16 6 6 18 6 10 Bay each of 2 cir cuits 12 10 4 8 11 6 12 Bay each of 2 cir cuits 8 12 4 6 13 9 14 Bay each of 2 cir cuits 8 14 5 8 16 2 16 Bay each of 2 cir cuits 8 16 6 4 18 6 Table 3 Single thermostat readings Reading Location Ambient Temperature Resistance 0 ohms short circuit Resistance infini...

Страница 31: ...t circuit Resistance infinite ohms open circuit Leg to Ground Any Defective thermo stat or shorted leads OK Leg to Leg Above about 38 F 3 3 C Defective thermo stat or shorted leads OK Between about 10 and about 38 F 6 7 to 3 3 C OK Defective thermo stat or broken leads Below about 10 F 6 7 C Defective thermo stat or shorted leads OK ...

Страница 32: ......

Страница 33: ...sure and the temperature c Wait twenty four hours then read the pressure and the temperature again and use the pressure correction formula at left to obtain a corrected pressure for comparison d If the system loses pressure at an unacceptably high rate re pressurize it leaving the gas supply on A rule of thumb is that the final pressure should not be less than half the initial pressure after twent...

Страница 34: ...ermine how wet the system is and thus how much purging will be required If a system of rigid line carefully protected from weather and assembled in dry weather is average a system exposed to moisture during storage or installation will be relatively wet New semi flex transmission line delivered pressurized with dry gas will be relatively dry used semi flex will be extremely wet CAUTION If all mois...

Страница 35: ...ehydrator to the system as shown in Figure 14 Raise the gas pressure to 12 or 13 psig 83 90 kPa CAUTION When purging you must blow dry gas through the system not just maintain a pressure The gas volume accomplishes the purge e If the relief valve has opened the nitrogen cylinder will slowly drain or the compressor dehydrator will not shut down Leave the system pressurized After completion of the p...

Страница 36: ...rs It will move stiffly because of O ring friction c Read the VSWR If the reading went down move the control rod again in the same direction If the VSWR went up move the same rod in the opposite direction d Keep adjusting the same rod until no further improvement is seen Adjust the second rod in the same manner If you get lost return both rods to the factory setting Table 6 and start over e Return...

Страница 37: ... applied Many riggers can sweep your system after installation or recommend a con tractor to perform it Alternatively Shively Labs makes available instructions for system sweep on our Web site www shively com Checkout Before beginning checkout of the antenna system be sure the following items have been done The antenna system has been installed in accordance with this manual and the installation d...

Страница 38: ...the system If icing conditions are expected the heaters should be turned on in advance as a preventive measure It is much easier to prevent ice formation than to remove a heavy coating Shively Labs de icer control system If you have the Shively Labs de icer control box and dual setting thermostat you have the choice of manual or automatic operation There are three switch settings AUTOMATIC OFF and...

Страница 39: ...nterior of the system Be sure the O ring is properly seated in its groove and not pinched between the flange contact surfaces Maintenance log Shively recommends that you keep a maintenance log in it record perfor mance parameters such as readings of VSWR and de icer current draw Such a log can be invaluable in spotting and identifying problems Sample maintenance log on page 37 shows a suggested lo...

Страница 40: ...hively Labs before attempting this pro cess Return policy When returning any material to the factory be sure to call your sales repre sentative and obtain an returned material authorization RMA number first Use this number in all correspondence This number helps us to track your returned item It will expedite repair or replacement and prevent loss of your material Troubleshooting Cantact Shively L...

Страница 41: ... work or any other source Paint applied to the radiators possibly during a recent tower paint ing Failure of de icers causing excessive ice buildup on one or more radiators Domes missing from vertical arms An overheating de icer can melt the solder from domes spacers and bushings at the ends of the vertical arms Erratic VSWR during impedance trimming If VSWR readings during transformer adjustment ...

Страница 42: ...O ring missing or poorly installed in transmission line feedline or baymount flange Leaky end seal see Figure 1 on page 4 Loose connecting hardware between line segments or between the baymount and the radiators Mechanical damage to transmission line transformer or antenna Check for leaks using soap solution ...

Страница 43: ...ample maintenance log DATE DE ICER CURRENT or resistance VSWR GAS PRESS OBSERVATIONS Visual Inspection of Antenna Obstruction Lighting Hardware Checked Tower Repairs Accomplished etc BLACK b neut NEUT red bl RED r neut ...

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