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--- guides:payload_antenna [2014/12/07 14:56] – created lz1dev
+++ guides:payload_antenna [2016/04/07 12:09] (current) – arjunnaha
@@ Line 8: / Line 8: @@
 ===== 1/4 Wave Step by Step Build =====
-You will need :
+You will need:
+  * Wire cutters
-Wire cutters, sharp blade, ruler, [[http://www.ebay.co.uk/sch/i.html?_trksid=p2050601.m570.l1313.TR2.TRC0.A0.X1%2F0.6mm&_nkw=1%2F0.6mm&_sacat=0&_from=R40|Single core wire]], RG174 coax. Example uses [[http://ava.upuaut.net/store/index.php?route=product/product&path=71_66&product_id=88|RG174 to SMA pig tail from HAB Supplies.]], Solder and Soldering iron :
+  * Sharp blade
+  * Ruler
+  * Single core wire [[http://www.ebay.co.uk/sch/i.html?_trksid=p2050601.m570.l1313.TR2.TRC0.A0.X1%2F0.6mm&_nkw=1%2F0.6mm&_sacat=0&_from=R40|eBay ("1/0.6mm")]]
+  * RG174 coax [[https://store.uputronics.com/index.php?route=product/product&path=63&product_id=59|RG174 to SMA pig tail from Uputronics]]
+  * Soldering iron and solder
 {{:guides:img_1927.jpg?500|}}
-==== Step 1 : Trim the insulation from the coax ====
+==== Step 1: Trim the insulation from the coax ====
-Measure 170mm from the bare end of the coax and cut the insulation without damaging the braid inside. Gently roll the blade over the cable :
+Measure 170mm from the bare end of the coax and cut the insulation without damaging the braid inside. Gently roll the blade over the cable.
 {{:guides:qwave2.jpg?500|}}
-Its important at this point not to cut the braid inside.
+It is important at this point not to cut the braid inside.
-==== Step 2 : Carefully Remove the insulation back to the end of the coax ====
+==== Step 2: Carefully Remove the insulation back to the end of the coax ====
 {{:guides:qwave3.jpg?350|}}{{:guides:qwave4.jpg?350|}}
-The easiest way to do this is to roll the knife around then carefully cut lengthways and remove the insulation in segements.
+The easiest way to do this is to roll the blade around then carefully cut lengthways and remove the insulation in segments.
-==== Step 3 : Leaving 5mm of braid cut the braid and remove ====
+==== Step 3: Leaving 5mm of braid cut the braid and remove ====
 {{:guides:qwave5.jpg?350|}}{{:guides:qwave6.jpg?350|}}
-==== Step 4 : Tin the Remaining Braid ====
+==== Step 4: Tin the Remaining Braid ====
 Make the remaining braid into two stumps and tin :
@@ Line 40: / Line 44: @@
 This is the radiating element. Put this to one side.
-==== Step 5 : Prepare the radials ====
+==== Step 5: Prepare the radials ====
-Cut two lengths of single core wire about 350mm long. Mark the center point with a pen and then remove about 25mm of insulation from the center :
+Cut two lengths of single core wire about 350mm long. Mark the center point with a pen and then remove about 25mm of insulation from the center.
 {{:guides:qwave8.jpg?500|}}
@@ Line 48: / Line 52: @@
 Again this is easiest by gently rolling the wire on the edge of a blade and then cutting lengthways and removing the insulation.
-==== Step 6 : Twist Together ====
+==== Step 6: Twist Together ====
-Using a pen or large nail as a former place the wires around and twist together. Then apply solder to secure them :
+Using a pen or large nail as a former place the wires around and twist together. Then apply solder to secure them.
 {{:guides:qwave9.jpg?350|}}{{:guides:qwave10.jpg?350|}}
-==== Step 7 : Connect the two sections ====
+==== Step 7: Connect the two sections ====
-Slide the coax part through the small hole in the center of the radial section. Solder in place :
+Slide the coax part through the small hole in the center of the radial section. Solder in place.
 {{:guides:qwave11.jpg?500|}}
-==== Step 8 : Trim Radiating element and radials ====
+==== Step 8: Trim Radiating element and radials ====
-From the point where the shield ends measure the radiating element and trim @ 164mm. This value is important :
+From the point where the shield ends measure the radiating element and trim @ 164mm. This value is important.
 {{:guides:qwave12.jpg?500|}}
@@ Line 68: / Line 72: @@
 Repeat with the radials.
-Congratulations you've made a light weight 1/4 wave antenna for 433Mhz. It is recommended you secure and straighten the radials and radiating element using straws :
+Congratulations you've made a light weight 1/4 wave antenna for 433Mhz. It is recommended you secure and straighten the radials and radiating element using straws.
 {{:guides:qwave13.jpg?500|}}
-Team Stratodean's payload :
+Team Stratodean's payload:
 {{:guides:payloadantenna2.jpg?400}}
-You can trim the straws down but take care not to snip the elements inside. The radials form a ground plane and this can be constructed into the base of the payload. The radiating element should face downwards. The length of the coax from the SMA plug to the start of the antenna isn't important though its suggested its kept as short as possible.
+You can trim the straws down but take care not to snip the elements inside. The radials form a ground plane and this can be constructed into the base of the payload. The radiating element should face downwards. The length of the coax from the SMA plug to the start of the antenna isn't important though it is suggested it's kept as short as possible.
 You don't need a coax with an SMA plug on it you can solder the other end directly to the board.