Differences

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--- yagi_antenna [2018/07/07 10:03] – created josh
+++ yagi_antenna [2018/07/07 10:20] (current) – josh
@@ Line 1: / Line 1: @@
-====== Parts Needed ======
+====== Creating a Yagi Antenna ======
+===== Parts Needed =====
   * (2) 2x4x8'
   * (~16) metal coat hangars
   * Matching transformer (like [[https://www.walmart.com/ip/RCA-VH54-LVH54N-Indoor-Matching-Transformer/20588615?wmlspartner=wlpa&selectedSellerId=1131&adid=22222222227014895810&wl0=&wl1=g&wl2=c&wl3=40874917352&wl4=pla-78766514312&wl5=9017517&wl6=&wl7=&wl8=&wl9=pla&wl10=112562428&wl11=online&wl12=20588615&wl13=&veh=sem|this one]] for example)
-  * (2) small washers
+  * (6) small washers
-====== Tools Needed ======
+===== Tools Needed =====
   * miter saw to cut 2x4's to length
@@ Line 15: / Line 17: @@
   * coax crimper and wire end
   * small piece of sandpaper
+===== Procedure =====
+  - Go to [[https://www.antennaweb.org/Address]] to map out direction and distance to towers.
+  - Decide on a target RF channel (for Zeeland I used RF channel 8 for 3.1 CBS because that was the most difficult to pick up).
+  - Figure out the frequency associated with that RF channel (e.g. [[http://otadtv.com/frequency/index.html]]). I used 183.
+  - Measure available space and verify availability of a coax cable to connect.
+  - Go to [[https://www.changpuak.ch/electronics/yagi_uda_antenna_DL6WU.php]].
+    - Enter your target frequency.
+    - Change "Diameter of parasitic Elements [mm]" to 3.
+    - Increase the number of elements until you reach the desired boom length. 11 elements will probably be close to a 14' boom length. Make sure that the reflector length isn't longer than your longest coat hangar.
+  - Cut all coat hangars to size (one for each director element, one with a gap for the dipole, and one long one for the reflector.
+  - Affix the boom in position (connect two 2x4's with another connector piece on the bottom if needed).
+  - Attach all director elements and the reflector using staples at the distances given by the Yagi design details.
+  - Attach the dipole and matching transformer with two small screws and washers (one washer under the dipole, one above, and one above the transformer, for example).
+  - Attach matching transformer to coax.