background image

Hy-Gain TH-1 Rotatable Dipole                                                                                Instructions 

 

10

 

A less effective method of protecting station equipment is to install an in-line coaxial lightning 
arrestor with a heavy duty ground wire to a suitable earth ground, or a safety switching system as 
part of the basic ham station equipment. 

 

MAINTENANCE 

 
Your antenna is constructed of heavy duty non corrosive materials and should withstand normal 
climates for many years.  The use of some type of coaxial connector moisture protection is 
recommended at the balun/coax connection, and also around the center-feed connections, 
especially in coastal areas where salty mist is commonplace. 
  
GE makes a pure, silicone grease called "SILICONE DIALECTRIC COMPOUND" that can be 
applied SPARINGLY to the threaded area of the female connector. This compound, or even a 
clear silicone heatsink compound, will prevent moisture from entering the connector through the 
threads and protect the connectors from corrosion. This is the same type of sealer that 
commercial antenna installers and CATV companies use with great success. 
  
Plast-Dip

TM

 and Liquid Electrical Tape

TM

, available at your local hardware store, also do an 

excellent job of insulating/waterproofing connectors, and can be easily peeled off when desired. 
 
A less desirable, but still adequate sealer is the automobile seam sealer commonly sold as "coax 
seal". This is a semi-pliable black or white sealing compound. 
  
When installing any "coax seal", NEVER completely cover the barrel of the coax connector. The 
sealer should ONLY be placed near the junction of the threaded part of the chassis connector and 
the knurled area of the male connector. This will leave the bottom of the male outer sleeve open 
and permit the connector to "breathe" so it does NOT collect moisture! 

 

TECHNICAL ASSISTANCE 

 
If you have any problem with this product, first verify that you have assembled, installed and 
tuned it correctly.  If your problem is not solved by following the manual you may call Hy-Gain 
toll-free at 1-800-647-TECH (8324) or FAX to 662-323-6551, or TELEX 53 4590 MFJ STKV.  
Outside of the continental U.S.A. 662-323-5869.  Please have your manual and all information 
on your station handy so you can answer any questions the technicians may ask.  You can also 
send questions to Hy-Gain, P.O. Box 494, Mississippi State, MS 39762.  Send a complete 
description of your problem, an explanation of exactly how you are using your unit and a 
complete description of your station. 

 
 
 

Содержание TH-1

Страница 1: ...ion up to a full 1500 Watts SSB CW on 20 15 and 10 meters Stub matching is used on 6 meters for 1500 watt operation on this band as well The Hy Gain TH 1 is built to last using an incredibly strong solid rod fiberglass center insulator and 6063 T 6 aircraft strength aluminum tubing for the radiator And it assembles in about an hour WARNING Improper installation and assembly can be hazardous Read t...

Страница 2: ...is a rigid pole or roof mount that puts the antenna completely in the clear If the ideal installation is not possible choose the best compromise TV mast heavy duty rigid electrical conduit and steel water pipes are suitable mast materials This antenna will mount on masts between 1 and 1 1 2 OD Do not use soft or thin wall masts Portable Operation The Hy Gain TH 1 may be disassembled as necessary f...

Страница 3: ...358757 19 Tubing Clamp 16 8 358758 20 6 32 kep nut 6 705 0632S 21 6 32 x 3 8 screw 6 656 0375S 22 7 16 Cap Plug 2 455644 23 10 32 hex nut 4 705 1032S 24 10 lock washer 2 711 1037S EX 41 Trap Beam DE15M 2 878637 43 Trap Beam 10M 2 878749 For installation you will need some items not supplied with the antenna installation kit A 6 8 rigid mast or other mounting pipe between 1 and 1 5 outside diameter...

Страница 4: ...nant frequency and SWR it can then be mounted on a tower or rooftop WARNING Wear safety glasses whenever working with this antenna Step By Step Procedure 1 Find a flat work area with the necessary clearance for assembly The TH 1 is easily assembled on the ground 2 After examining the antenna parts gather the following tools needed for assembly Small 4 6 adjustable wrench OR 5 16 nut driver for hos...

Страница 5: ...gure 4 The item numbers in Figure 4 correspond to the item numbers on the parts list 6 Mtr stub ASSEMBLY and INSTALLATION 20 hdwr end view Figure 3 48 Radiator Tube to Center Insulator Assembly 1 3 8x 12 AL Tube 2 plcs 1 1 4x48 AL Tube 2 plcs 16 Tubing Clamps 1 1 4 Fiberglass Tube Figure 2 Center Insulator Assy Top View Fiberglass Rod Balun wire 2 plcs Slot 20 hdwr 2 plcs 1 3 8x 12 AL 2 plcs Solde...

Страница 6: ...eading a 10 32 x 3 8 nut 1 2 near the end of the threads Add a second nut and lockwasher to sandwich the bracket between the two nuts leaving no more than of threaded rod exposed beyond the aluminum bracket See Figure 6 11 Strip four inches of insulation from the end of your coax feedline Separate the braid from the center conductor and install the solder lugs on the shield and center conductor wi...

Страница 7: ...AND SWR ADJUSTMENT An SWR analyzer such as the MFJ 259B or equivalent is highly recommended when tuning the TH 1 While a transceiver and SWR meter can be used an SWR analyzer will significantly decrease the time and effort necessary to tune the antenna The entire antenna must be accessible during tuning and testing Because of the non criticality of 6 meter tuning final tuning of the 6 meter resona...

Страница 8: ... Start with 10 meters by adjusting the innermost tubing lengths then move to 15 meters adjust the spacing between the two traps and finally 20 meters adjust the length of the end tubes Shortening the tubes increases the resonant frequency and lengthening the tubes decreases the resonant frequency Note Changing the resonant frequency of a higher frequency band will also change the resonant frequenc...

Страница 9: ...cal hardware store also do an excellent job of insulating waterproofing connectors and can be easily peeled off when desired A less desirable but still adequate sealer is the automobile seam sealer commonly sold as coax seal This is a semi pliable black or white sealing compound When installing any coax seal NEVER completely cover the barrel of the coax connector The sealer should ONLY be placed n...

Отзывы: