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Antenna Assembly Instructions 

Please follow the steps listed below to assure proper operation of this antenna and deploy as 
described. 
 

Step 

Assembly Operation 

Remove all items from the Carry Bag and inspect each item for any damage. 

Identify and count all parts, comparing them to the Parts List. 

Determine how you will physically mount the antenna, whether you purchased one of 
the Alpha Antenna mounting options or have one of your own. 

Attach the 

Outer Loop Element 

by laying the Alpha Match depicted in Figure 1 on a flat 

surface, then attach (screw) the PL-259 connectors on the Outer Loop into the SO-239 
connectors on the Alpha Match. 

Setup the tripod on a flat stable surface and screw the Tripod into the bottom of the 
Alpha Match, again it is better to turn the tripod rather than the Alpha Loop Jr. 

Mount the completed Alpha Loop Jr Antenna by positioning it in a location where it 
cannot touch other objects such as lamps, desks, poles, wires, power lines, ladders, 
people, etc.). Your deployed antenna should now appear as depicted in Figure 2. 

Now it is time to connect the antenna to your radio. If your radio has a SO-239, use the 
included BNC to PL-259 adapter to attach the Feed Line to your radio, otherwise attach 
the BNC connector to your radio. 

 

Antenna Operation 

The Alpha Loop Jr antenna has a built in tuning knob on the Alpha Match. It is with this black 
knob that you tune the antenna to the lowest SWR of less than 1.9:1 on any frequency from the 
10 Meter through the 40 Meter band. The following technique has proven to be the easiest 
method for tuning the Alpha Loop Jr in nearly all scenarios: 
 

1)

 

After attaching your coax to your radio, turn the tick mark on the Inner section of the 
Brass Reduction Drive so that it points in relatively close proximity to the frequency 
range marked on the Alpha Match.  

a.

 

Please note that the capacitor can turn past 360 degrees without damaging any 
component. 

b.

 

Also note that you can tune from 7 through 29.7 MHz on either side of the 
marked frequency designation. 

2)

 

Now power on your radio/antenna analyzer on and to the frequency you would like to 
operate; IF ATTACHED TO ANTENNA ANALYZER SKIP TO STEP 5. 

Содержание Alpha Loop Jr

Страница 1: ...ide for the Alpha Loop Jr Antenna Manufactured by Alpha Antenna 1 888 482 3249 Website http AlphaAntenna com Available from Amateur Radio Store Website https amateurradiostore com User Guide Version 2...

Страница 2: ...Page 2 Table of Contents Introduction 3 Product Overview 3 Safety Tips 4 Antenna Diagram 5 Antenna Parts List 6 Antenna Assembly Instructions 7 Antenna Operation 7 Support Contacts 8...

Страница 3: ...ing or using this product please do not hesitate to call us at 1 888 482 3249 or send email to support alphaantenna com Product Overview The Alpha Loop Jr Antenna is designed to operate on the 10 12 1...

Страница 4: ...ER 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 propose...

Страница 5: ...Page 5 Antenna Diagram The major components of the antenna and their relative positions are depicted in Figure 1 Figure 1 The completed Alpha Loop Jr is depicted in Figure 2 Figure 2...

Страница 6: ...built in handles 1 2 Comfort Handle with integrated universal tripod adapter and 24x3 8 bolt 1 3 10 feet of feed line to a BNC connector with built in inner loop 1 4 BNC to SO 239 adapter 1 5 Alpha M...

Страница 7: ...people etc Your deployed antenna should now appear as depicted in Figure 2 7 Now it is time to connect the antenna to your radio If your radio has a SO 239 use the included BNC to PL 259 adapter to at...

Страница 8: ...analyzer is connected rather than a transceiver As is mentioned you can use an antenna analyzer that is set to the frequency you are going to transmit on and turn the knob on the Alpha Loop Jr till y...

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