ARC minutes 2006-05-19 meeting

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When
Friday, 5:30pm
Where
ENGR 436a

Contents

Agenda

  • old business?
    • need to start doing paperwork for tailgate
  • Build antennas, per each participant's choice and materials available

Actual activities

  • Several J-poles (3 or 4) were built and/or modified
  • KI4IUP worked on his power supply
  • Some wire was cut for Moxons, but we didn't actually get to that.

Future follow up:

  • Finish J-poles
    • complete assembly
    • tune with antenna analyzer, make smith charts and SWR graph
  • Work on moxons
    • test better feedline mount methods

Most of the rest of this page details preparation for this meeting. Parts of it should be split out into more permanent and specific pages for the respective antennas.

Attendees

If you want to build either of these antennas, please list yourself below, so we know how much pipe / wire to buy:

  • Folding J-pole
    • KG4YDW (will bring old j-pole to convert)
    • KI4ORG
    • KI4OLU
  • Single piece J-pole
    • KI4ORG
  • Moxon
    • KI4ORG
    • KG4YDW
    • KI4HXM
    • KI4OLU
  • 70 cm moxon
    • KI4IUP
    • Eric White(call sign pending)

shopping list and parts list

  • torch fuel? (fuel purchased! -HXM)
  • Moxon parts (per antenna)
    • 6.5 ft copper wire (6 gauge suggested)
    • coax connector, structural support
    • insulators -- 1.3" plus support length

Keiths Updated and Improved Folding J-Pole Shopping List $21.64

Bringing you that same wholesome folding j-pole goodness you know and love with parts that actually work.

cost # description
9.62 5 ½” Copper pipe in 19.5” segments
0.58 2 ½” Copper Pipe Couplings
0.54 1 ½” Copper Pipe T Joint
0.33 1 *½” Copper Pipe Elbow
0.96 3 ½” Copper Pipe End Cap
0.54 2 ½” Copper Pipe tube strap
1.26 1 Bungee cord Apx. 7’
0.98 #8-32x1 5/8” hook and eye
0.98 6 #8-32 nuts
0.98 #8-32x5/8” screws
0.98 #8 washers
0.98 #8 lock washers
0.98 2 #6-32x½ bolts and Nuts for Feed Point
0.22 2.5”x2.5” Lexan sheet
1.50 SO-239 Panel Mount connector
0.21 #8 O ring terminals, crimp on
Steal! A Few Inches of Wire

(this list has been copied to J-pole antenna)

Inventory

  • coper pipe conectors (1/2")
    • 3 - end caps
    • 17 - elbows
    • 2 - Ts
    • 1 - coupler
  • pipe lengths available (rounded to the next smallest inch)
    • 1/2"
      • 1 - 4"
      • 1 - 7"
      • 1 - 8"
      • 3 - 9"
      • 1 - 1' 7"
      • 1 - 2' 2"
      • 1 - 2' 4"
      • 1 - 5' 2"
    • 3/4"
      • 1 - 1'
  • coper pipe with fittings soldered on (1/2)"
    • 5' 2" with a T conector soldered on
    • 1' 7" with a elbow soldered on

Tools Available

  • soldering torch
  • solder
  • pipe cutter (KI4ORG, also kg4ydw)
  • Dremel, soldering iron, pipe cutter, axe KI4HXM

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