Hy-Gain 18AVQII Instruction Manual Download Page 13

 

hy-gain

®

 LIMITED WARRANTY 

 

hy-gain

 Warrants to the original owner of this product, if manufactured by 

hy-gain

 and 

purchased from an authorized dealer or directly from 

hy-gain

 to be free from defects in 

material and workmanship for a period of 

12

 months for rotator products and 

24

 months 

for antenna products from date of purchase provided the following terms of this warranty 
are satisfied. 
 
1.

 

The purchaser must retain the dated proof-of-purchase (bill of sale, canceled check, 
credit card or money order receipt, etc.) describing the product to establish the 
validity of the warranty claim and submit the original or machine reproduction of 
such proof-of-purchase to 

hy-gain

 at the time of warranty service.  

hy-gain

 shall have 

the discretion to deny warranty without dated proof-of-purchase.  Any evidence of 
alteration, erasure, or forgery shall be cause to void any and all warranty terms 
immediately. 

 
2.

 

hy-gain

 agrees to repair or replace at 

hy-gain’s

 option without charge to the original 

owner any defective product under warranty, provided the product is returned postage 
prepaid to 

hy-gain.

 

 
3.

 

Under no circumstances is 

hy-gain

 liable for consequential damages to person or 

property by the use of any 

hy-gain

 products. 

 
4.

 

Out-of-warranty Service:  

hy-gain

 will repair any out-of-warranty product provided 

the unit is shipped prepaid.  All repaired units will be shipped COD to the owner.  
Repair charges will be added to the COD fee unless other arrangements are made. 

 
5.

 

This warranty is given in lieu of any other warranty expressed or implied. 

 
6.

 

hy-gain

 reserves the right to make changes or improvements in design or manufacture 

without incurring any obligation to install such changes upon any of the products 
previously manufactured. 

 
7.

 

All 

hy-gain

 products to be serviced in-warranty or out-of-warranty should be 

addressed to 

hy-gain, 308

 

Industrial Park Road, Starkville, 

Mississippi 39759, USA

 and must be accompanied by a letter describing the 

problem in detail along with a copy of your dated proof-of-purchase. 

 
8.

 

This warranty gives you specific rights, and you may also have other rights which 
vary from state to state. 

 

Summary of Contents for 18AVQII

Page 1: ...re and element clamps for all electrical and most mechanical connections Theory of Operation The use of heavy duty Hy Q Traps provides automatic band selection The Hy Q Traps are parallel resonant circuits which isolate the various sections of the antenna and give quarter wavelength resonance on all bands The top loading coil is used for operation on the 80 meter band while the overall height of t...

Page 2: ...bove ground Since the radials of a ground mounted vertical are actually on if not in the ground they are coupled by capacitance or conduction to the ground thus resonance effects are not important Basically the function of radials is to provide a low loss return path for ground currents The reason that short radials are sufficient when few are used is that at the perimeter of the circle to which t...

Page 3: ...Before you begin read the instructions and study the illustrations Compare the parts against the Parts List at the end of this manual Decide where to mount your antenna rooftop or ground and what mode of transmission you will use Phone CW or Mid Band Take special notice of the dimensions in Figure 2 The SWR charts will help you decide which dimensions to choose See Figure 8 ...

Page 4: ...2 12 12 12 1 4 8 3 4 8 3 4 8 3 4 14 5 13 5 13 CW MB Ground Mount Ground Mount Item No Description 2 Base Assembly 18AVQII 4 Tube M 1 1 4 x 48 slotted 5 Insulator upper 7 Tube M2 1 1 8 X 52 8 Tube M3 1 x 8 9 Tube M4 1 X 6 10 Tube M5 7 16 x 56 11 Trap 10 Meter 14 15 16 Clamp Tubing No 6 17 18 Trap 15 Meter Trap 20 Meter Clamp Tubing No 10 Clamp Tubing No 16 Antenna Assembly Dimensions 20 5 22 22 5 F...

Page 5: ...the clamp near the tube end with the top of the clamp over the slot in the tube as shown in Figure 2 After adjustment of the tubing lengths tighten the clamp with a 5 16 inch nut driver socket or open end wrench until the tubing will not twist or telescope DO NOT over tighten Figure 3 Tubing Clamps ...

Page 6: ...two un tightened 10 tubing clamps Item No 17 over the 1 x 8 long M3 section Item No 8 Slide the M3 section part way over the upper end of the 10 meter trap then slide the lower end of the 15 meter trap Item No 14 into the M3 section Set dimension C as shown in Figure 1 and locate the M3 so that it is equally spaced between the two traps Tighten the clamps around the ends of the M3 just enough to k...

Page 7: ...nd of the loading coil assembly tube as shown in Figure 4 4 Secure the tubing in place with one of the supplied hose clamps Be sure to place the connection tab between the aluminum tubing and the clamp as shown in Figure 4 5 Place the remaining hose clamp onto the aluminum tube This clamp is used to secure the MK 80 to an existing AV 14AVQ antenna See Figure 4 6 Place four capacitance spokes into ...

Page 8: ... 16 nuts and 5 16 lock washers Items Nos 29 31 and 30 Use three 3 1 4 20 x 3 4 bolts nuts and lock washers Item No s 24 27 26 to attach the insulator to the upper end of the mounting bracket If you are roof mounting your antenna use four 4 sets of 1 4 20 hardware for the preceding step Before tightening them attach two adjacent radials to each set of hardware as shown in Figures 3 and 5 If desired...

Page 9: ...system must be grounded for lightning protection Connect a ground wire to one U bolt on the antenna base and run it to a buried 8 foot 250 cm ground rod by the shortest route If you are ground mounting your antenna install it as shown in Figure 4 You must install an 8 foot ground rod as shown CAUTION Keep the radials out of reach of children or pets They are HOT with RF proportional to the power o...

Page 10: ...installation is influenced by the soil conditions and the proximity effect of nearby objects the dimensions in the manual must be fine tuned to put the antenna VSWR exactly where you want it on each band 3 Beginning on 10 meters make a VSWR curve checking the low end center and high end of the band This will indicate if the antenna favors the low end or the high end as installed 4 The antenna oper...

Page 11: ...a to a lower frequency as outlined above 5 Next repeat this same procedure for 15 meters to put that band on frequency 6 The same procedure is then used to set up the 20 meter band as well as the remaining bands available depending upon the model involved 7 Most verticals are monopole antennas or half of a dipole For this reason the soil conditions when the antenna is ground mounted are important ...

Page 12: ...Tubing No 10 5 18 358758 Clamp Tubing No 16 1 19 455624 Caplug 1 8 dia 3 20 504069 Bolt hex head 10 24x1 1 21 565697 Lockwasher internal 10 3 22 561165 Flatwasher 10 4 23 555693 Nut square 10 24 1 24 505266 Bolt hex head 1 4 20 x 3 4 4 26 562967 Lockwasher internal 1 4 5 27 554099 Nut Hex 1 4 20 4 29 543792 U Bolt 5 16 x 15 8 x 21 4 2 30 564792 Lockwasher split 5 16 4 31 555747 Nut hex 5 16 18 4 8...

Page 13: ...thout charge to the original owner any defective product under warranty provided the product is returned postage prepaid to hy gain 3 Under no circumstances is hy gain liable for consequential damages to person or property by the use of any hy gain products 4 Out of warranty Service hy gain will repair any out of warranty product provided the unit is shipped prepaid All repaired units will be ship...

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