AE5YP 1 Portable NVIS Antenna. AE5YP 2 The Thought I want an antenna easy to: Transport Set up Use...
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Transcript of AE5YP 1 Portable NVIS Antenna. AE5YP 2 The Thought I want an antenna easy to: Transport Set up Use...
![Page 1: AE5YP 1 Portable NVIS Antenna. AE5YP 2 The Thought I want an antenna easy to: Transport Set up Use No Coils or Traps (1/2 wave length Dipole antenna)](https://reader035.fdocuments.in/reader035/viewer/2022062217/5697bf941a28abf838c901a3/html5/thumbnails/1.jpg)
AE5YP
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Portable NVIS Antenna
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The Thought
• I want an antenna easy to:
• Transport
• Set up
• Use
• No Coils or Traps (1/2 wave length Dipole antenna)
• Easy to build
• No Tuner Required
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Time for a trip to Lowes
• Four 10’ lengths of 1 1/2” PVC schedule 40 pipe
• Four 1 1/2” End caps
• Three 1 1/2” T Fittings
• Five 1 1/2” Coupling joints
• One 1 1/2’-1 1/4” Reducer
• One 3/4” PVC junction
• Two 1/2” plugs
• 3/32” ferrules and stops (rope section)
• Spool of 14 AWG (500’)/ more than I needed
• PVC Primer and Cement (comes in a kit packet) Small is plenty
• Coat Hooks
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Stuff I had on hand
• Reciprocating Saw (hand saw works, it is just PVC) I take the easy way sometimes
• Power Drill and Bits
• Crimping Tools
• Rivet Gun
• Can of Orange Spray Paint (your choice and tastes may vary)
• Soldering equipment
• SO-239 Chassis Mount
• Screws/ Washers/ Nuts/ rivets
• RTV
• Rope
• Tent Stakes
• 1/2’ Pex (insulators)
• Zip Ties
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Getting Started
• Cut the straight end of the reducer (about 1/4”) as it is too long
• Drill a 1/8” hole in each of the 1/2” caps
• Drill a hole for the SO-239 in the center of the Junction box
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Assemble the Box
Cement the
Reducer to the Box
Cement one of the 1 1/2”
Couplers to the
Reducer
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The Ferrule & Stop
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A Bit of Electrical WorkI goofed and missed putting the wire an ferrules through the end caps before the end eyes were attached. The wire would have been longer as well. I suggest about 10” to make attaching the element easier.
Should not have attached these yet.
Stop should be here
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More of the Box
• The hole for the SO-239
• Screw holes drilled
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More of the Box
A bit of RTV and screw it in place with the Ground Side Jumper
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More of the Box
• The End caps should have been in place for the previous step
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Getting Started
• Cut 9 section of 1 1/2’ pipe to 34”/ Clean up the cut ends
• Cement one end cap on the end of 4 of the cut pieces
• Cement the remaining 4 couplers at one end of other 4 sections of pipe
•
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The Top Section
• I put two sets of Coat hooks to store the Elements of the Dipole
• No coupler on this piece
• The hole is to run the Coax inside
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The Base
• You will need to cut Two pieces of scrap about 2” to act as a coupler
• Cement the three 1 1/2” Tee pieces to look like this
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Paint the Mast
• I taped the ends with the famous Blue Masking tape keeping the last 2 1/2” from getting paint on them
• I painted everything except the Junction Box with my Orange Spray Paint
• I should have covered the couplers to keep paint out (I still need to sand them clean)
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The Mast Top
• The Duffle bag is 36” long
• One of the mast pieces should have been cut to 30” to fit into the bag because the Junction box makes it too tall
• I missed drilling a hole in one of the other mast sections to allow the Coax to exit
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The Elements
• I cut two lengths for each Band with extra for fold back
• Put a crimp eye to attach to the Junction box jumper
• 60M 44’ + 2’
• 40M 33.5’ + 2’
• 20M 17’ + 2’
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Insulators
• I cut Six insulators from some extra Pex I had on hand
• Drill a hole in each end big enough for the line and element wire
• These were painted when I painted the mast
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Here it is waiting to assemble
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The assistant
• Chores first
• Grandpa can not mow after we have the antenna in the yard
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Here it is
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Need to add an exit hole here
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Tuning
• We set up the elements to be staked at about 40’ from the mast
• Only the 40M and 20M were set and tuned
• It took about 1 hour to assemble and tune two bands
• Two weeks later on another visit I set the antenna up in 10 minutes no helper
• The helper on another visit added time, about 30 minutes
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Results From Altus OK.
• Contacts in one Day (really just two hours)
• New Orleans
• Miami
• Portland
• Seattle
• Mexico City
• Vancouver
• The weird one
• Blackpool (England) 4/8 Report
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Questions??
The assistantsChristopher
& Jack
At the Fireman Challenge