Alpha Antenna 6160 User Manual.pub
Contents
1. This should be done using an antenna analyzer for opti mum results Although the SWR will not change much as 1 3 inches of wire are trimmed eventually you will see the SWR start to increase at which time you need to stop trimming It is necessary to take precise readings on each band and monitor for when the first band starts to increase which is an indication that it s about time to stop trimming Tuning through trimming the tuning stub invalidates any implied or stated warrantees Note the Trouble shooting section before you attempt to trim the tuning stub Page 8 QAANTENNA Alpha Antenna uses antenna designs that are known to work 12 The Alpha Antenna Alpha 6160 SWR Analysis 8 RG 17 ort pose qm nost s 2 gt QAANTENNA Alpha Antenna uses antenna designs that are known to work Troubleshooting If your antenna isn t tuning up properly simply try moving it Chances are you have it in a position that is causing an odd SWR and the tuner doesn t like it If your antenna is giving unwanted TVI or RFI to other equipment in the house you may also need to reposition the antenna This is mostly the case for installations where the antenna is running parallel to ground This creates a large reflection to ground which tends to create interference in the shack and the house To eliminate this issue try installing as much of the antenna in a vertical configuration as you pos sibly ca2. 40 Meters and a fairly resonant pat tern on the rest of the HF bands including 80 amp 160 Meters From the J Pole formulas we derive the lengths of each wire pair spacing of the wiring between their respective sheaths and size amp number of the strands of the wire used From the Zepp is the matching feeder ele ment formula and although significant is by no means the only factor in matching the antenna A 4 1 UNUN utilizes compliments that Match ing Network of the antenna The 4 1 UNUN allows for the antenna to be fed with 50 ohm coax at the antenna This makes for an important design characteristic when feeding a tuner as it keeps the RF voltages low at the feed point Then depending upon what band you are you a tuner can be used to perform the final matching for resonance Installation Safety WARNING INSTALLATION OF THIS PRODUCT NEAR POWER LINES IS DANGEROUS FOR YOUR SAFETY FOLLOW THE EN CLOSED INSTALLATION DIRECTIONS THOUGH THIS ANTENNA IS CONSTRUCTED OF INSULATED WIRE PROPER CARE MUST BE TAKEN DURING INSTALLATION INSTALLER ASSUMES ALL LIABILITY FOR PROPERTY AND LIFE SAFETY YOU YOUR ANTENNA AND SAFETY Page 4 QAANTENNA Alpha Antenna uses antenna designs that are known to work Each year hundreds of people are killed mutilated or receive severe and permanent injuries when attempting to install an antenna In many of these cases the victim was aware of the danger of electrocu tion but did not take adequat
3. QAANTENNA Alpha Antenna uses antenna designs that are known to work Alpha Antenna Model Alpha 6 160 The 6 160 Meter HF J Pole USER GUIDE v2 1 October 12 2011 Page 1 QANTENNA Alpha Antenna uses antenna designs that are known to work fi f QAANTENNA Alpha Antenna uses antenna designs that are known to work Introduction Thank you for purchasing the Alpha 6 160 from Alpha Antenna At 75 feet in length the unique design characteristics of your 6 160 Meter HF J Pole antenna enables it to achieve resonance on the major HF bands 6 10 15 20 40 Meters and presents a SWR on all of the HF bands including 80 amp 160 Meters that is low enough for 10 1 tuners to achieve a perfect match Alpha Antenna uses antenna designs that are known to work De signed by Amateur Radio Operators at Alpha Antenna in conjunction with a Certified Commercial Broadcast Engineer the Alpha Antenna 6 160 merges the best antenna designs into one antenna system Technical Specifications e Weight 2 5 pounds e Configuration Vertical Inverted L Horizontal e Frequency Coverage 1 8 to 54 MHz e Power Rating 200 watts e Length 75 Feet Page 3 QAANTENNA Alpha Antenna uses antenna designs that are known to work Functional Description A combination of antenna designs namely the J Pole and Zepp along with matching network technologies are utilized to achieve a resonant antenna design on 6 10 15 20 amp
4. e steps to avoid the hazard For your safety and to help you achieve a good installation please READ and FOLLOW the safety precautions below THEY MAY SAVE YOUR LIFE 1 If you are installing an antenna for the first time please for your own Safety as well as others seek PROFESSIONAL ASSISTANCE 2 Select your installation site with safety as well as performance in mind Detailed information in Site Selection appears in a separate sec tion of this booklet REMEMBER ELECTRIC POWER LINES AND PHONE LINES LOOK ALIKE FOR YOUR SAFETY ASSUME THAT ANY OVERHEAD LINES CAN KILL YOU 3 Call your electric power company Tell them your plans and ask them to come take a look at your proposed installation This is a small inconvenience considering YOUR LIFE IS AT STAKE 4 Plan your installation procedure carefully and completely before you begin Successful raising of a mast or tower is largely a matter of coor dination Each person should be assigned a specific task and should know what to do and when to do it One person should be designated as the leader coordinator of the operation to call out instructions and watch for signs of trouble Page 5 QAANTENNA Alpha Antenna uses antenna designs that are known to work 5 When installing your antenna REMEMBER DO NOT USE A METAL LADDER DO NOT WORK ON A WET OR WINDY DAY DO DRESS PROPERLY shoes with rubber soles and heels rubber gloves long sleeved shirt or jacket 6 If the a
5. n still following the other rules for standards antenna installa tion presented here in this manual and in the ARRL Handbook If you are running an inverted L and you aren t getting too much DX try repositioning to a sloper or vertical sloped or straight up The in verted L positioning tends to give a NVIS straight up directive and you will only tend to get local stations with this positioning Have Other Questions If you have questions about your antenna please feel free to contact us Page 10 QAANTENNA Alpha Antenna uses antenna designs that are known to work Support Email support alphaantenna com Phone 1 888 482 3249 WEB www alphaantenna com Page 11 QAANTENNA Alpha Antenna uses antenna designs that are known to work NOTES Page 12
6. ssembly starts to drop get away from it and let it fall Re member the antenna mast cable and metal guy wires are all excel lent conductors of electrical current Even the slightest touch of any of these parts to a power line completes an electrical path through the antenna and the installer THAT S YOU 7 If ANY PART of the antenna system should come in contact with a power line DON T TOUCH IT OR TRY TO REMOVE IT YOUR SELF CALL YOUR LOCAL POWER COMPANY They will re move it safely If an accident should occur with the power lines call for qualified emergency help IMMEDIATELY Antenna Installation There are several basic methods to installing the antenna The most common methods are Horizontal and Inverted L where the feed point or center of the antenna is tied to a pole or high object in order to get the radiator as high in the air as possible The best rule of thumb is to get it as high off the ground as possible for your situation Other than that even if you install it in a different shape to fit your apartment condo or other installation the antenna is pretty forgiving Page 6 QAANTENNA Alpha Antenna uses antenna designs that are known to work Since the antenna can be used in either permanent or temporary in stallations finding a good place for the antenna is just a matter of ex amining your location Try to keep the entire antenna away from metal objects including metal siding of houses or metal poles wa
7. ter pipes rain gutters etc 70 of the power radiated from the antenna is in the first 1 3 of the antenna where the coax attaches It is important to affix the start point of then antenna to objects like trees roofs chimneys or string it up with a nonconductive cable nylon rope to get the start point as high off the ground as possible The antenna will perform best when both ends are high off the ground Connection to HF Radio The Alpha 6 160 antenna is designed to directly connect to your tuner or radio s tuner with standard 50 ohm coax To connect the antenna to your tuner simply screw the PL 259 end of your coax into the Alpha 6 160 antenna and the other end into to your tuner or radio This an tenna is designed to be fed with unbalanced or balanced feed line Page 7 QAANTENNA Alpha Antenna uses antenna designs that are known to work Optimum SWR Performance The SWR for the Alpha 6 160 HF J Pole has been tested at heights from just 6 feet through 30 feet and comes pre tuned During tests opti mum results achieved are represented in the following SWR Analysis These results will vary for your particular installation based upon ob jects in your surrounding environment If you do not have a tuner or if necessary you can incrementally tune the Alpha 6 160 using the tun ing stub This involves selecting the center frequency that you will operate on and trimming a short amount 1 3 inches at a time of the shorter wire
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