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item #1 has been discontinued for over a year
"RHF" wrote in message ps.com... LS, Building a Telescoping "Whip" Antenna for your Shortwave Receiver http://groups.yahoo.com/group/Shortw...a/message/9499 Here is "HOW TO" make a Telescoping {Whip} Antenna for use with most Shortwave Receivers that do not have a built-in Whip Antenna. NEED - A 'temporary' Whip Antenna to use with your Shortwave Receiver ? WANT - A 'Reference' {Whip} Antenna to compare the gain of your latest new in-door or out-side Antenna Project. MOBILE - Thinking of going 'mobile' and need a simple 'back-of-the-radio' "Portable" Whip Antenna ? JUST WANT - An "Emergency" Whip Antenna available to use - just incase ? HOW TO MAKE IT: It's as simple as this . . . Go to Radio Shack and buy these three items. 1. "Replacement Telescoping Antenna" with Six (6) Sections Extendsto 72". - - - RadioShack Calalog # 270-1408B 2. "Right-Angle BNC Connector with Strain Relief" (Solderless Male). - - - RadioShack Calalog # 278-126 3. "UG-273/U RF Adapter" Adapts BNC Male to 'fit' a SO-239 UHF-Type Female. - - - RadioShack Calalog # 278-121 4. Assemble all three items together. HOW TO USE IT: This Whip Antenna can be 'screwed into' the SO-239 Connector on the back of the Shortwave Receiver and extended in the upright vertical position for best reception. CAUTION: Use some care in handling and positioning thisWhip Antenna as it is not excessively mechanically strong for its long size. ALTERNATIVE 'PORTABLE' WHIP ANTENNAS : Banana Plug Flexiable Wire Whip Antenna Take a Banana Plg and connect a 48" to 84" piece of Insulated Hook-Up Wire to it. Tie a simple Overhand Loop Knot in the Far-End for Rigging it in place. Then plug the Banana Plug into the Center Pin of the SO-239 Jack and Rig the Far-End with a Thumb-Tack of String. PL-259 Plug and Coax Cable Flexiable Wire Whip Antenna Take a 60" to 84" piece of Coax Cable with a PL-259 Plug on one end. About 12" from the PL-259 Plug carefully Cut and Remove the Outer Insulation from the Coax Cable all the way to the Far-End. Next carefully do the same for the Shield Wires of the Coax Cable. You now have the Center Conductor and Inner Insulator exposed for 48" to 72" as the Wire Antenna Element. Tie a simple Overhand Loop Knot in the Far-End for Rigging it in place. Then plug the PL-259 Plug into the SO-239 Jack and Rig the Far-End with a Thumb-Tack of String. -Note- This PL-259 Plug and Coax Cable Flexiable Wire Whip Antenna can be made longer 12 to 18 Feet for Picnics and Camping or a Out-the-Window Travel Antenna. Anything larger-longer should be a "Snake" Antenna made from Coax Cable. READ - Building a "SNAKE" Antenna [Hidden / Stealth] (End-Fed-Dipole Antenna) http://groups.yahoo.com/group/Shortw...a/message/4384 ABOUT - The Snake {in-the--Grass} Antenna -aka- "Grass Wire" Antenna http://groups.yahoo.com/group/Shortw...a/message/2844 Selecting an Active Antenna plus the Snake-in-the-Grass Antenna http://groups.yahoo.com/group/Shortw...a/message/1694 Snake-in-the-Attic SWL Antenna {Simplest Low Noise Attic Antenna} http://groups.yahoo.com/group/Shortw...na/message/313 http://groups.yahoo.com/group/Shortw...na/message/317 http://groups.yahoo.com/group/Shortw...a/message/1635 hope this helps - iane ~ RHF |
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