summaryrefslogtreecommitdiffstats
path: root/2.-Direction-Finding-Quickstart-Guide.md
diff options
context:
space:
mode:
Diffstat (limited to '2.-Direction-Finding-Quickstart-Guide.md')
-rw-r--r--2.-Direction-Finding-Quickstart-Guide.md26
1 files changed, 9 insertions, 17 deletions
diff --git a/2.-Direction-Finding-Quickstart-Guide.md b/2.-Direction-Finding-Quickstart-Guide.md
index a640858..4120414 100644
--- a/2.-Direction-Finding-Quickstart-Guide.md
+++ b/2.-Direction-Finding-Quickstart-Guide.md
@@ -9,30 +9,22 @@ The following graphic is an overview of the entire system.
# Setup Antenna Array
We recommend only using a Uniform Circular Antenna (UCA) array unless you are more experienced.
-**Quick Antenna Sanity Check:** Antenna hardware must be identical. Antenna cables must be of identical lengths and construction.
+**Quick Antenna Setup Check:** Antenna hardware must be identical. Antenna cables must be of identical lengths and construction.
## Print Array Spacer
-The antenna array must be sized correctly for your desired frequency. It is also recommended that you use an array spacer to precisely position your antennas.
+You may wish to use our antenna spacing template which will help with accurate antenna placement. The more accurate your array, the better your results will be.
-If you have a 3D printer you can use our .obj files for the individual arms and center pentagon that can be glued together.
+Files for 3D printing and paper printing can be found in this repo at https://github.com/krakenrf/krakensdr_docs/tree/main/antenna_array
-Array Arm: https://drive.google.com/file/d/1LsiqZolMU4og2NStPewQWhIh3z6N1zb5/view?usp=sharing
-Array Middle Pentagon: https://drive.google.com/file/d/1fn4KO7orITNJWV99XJHYu8RlZgmTl6-5/view?usp=sharing
+For both templates print the center pentagon and five arms separately, then glue them together.
-If you don't have a 3D printer our paper template can be used and glued together as well.
+**Each hole is spaced at 50mm radius intervals.** So you have radius spacings of 100mm, 150mm, 200mm, and 250mm. These spacings cover the following frequency range:
-Array Arms: https://drive.google.com/file/d/16tjBljRIHRUfqSs5Vb5xsypVTtHK_vDl/view?usp=sharing
-Array Middle Pentagon: https://drive.google.com/file/d/1ekBcr3fQEz1d8WlKEerOmj-JriCywHhg/view?usp=sharing
-
-**Each hole is spaced at 50mm radius intervals.** So you have radius spacings of 100mm, 150mm, 200mm, and 250mm.
-
-## Choose a correct radius for your frequency of interest
-The array radius required will depend on the frequency range that you are interested in. Choose a multiple of 50mm close to your determined radius and enter it into the "Acceptable Frequency Range For a Fixed Array Radius". Ensure that the frequency you are interested in is within the green range.
-
-For example in the image below we have selected a 25cm/250mm array radius. The Excel calculator shows us that we can use frequencies between ~200 MHz - 500 MHz with this size.
-
-![image](https://user-images.githubusercontent.com/78108016/170191095-75ed333e-652d-4832-a8aa-7e473a562d8c.png)
+100mm : 510 - 1275 MHz
+150mm : 340 - 850 MHz
+200mm : 255 - 637 MHz
+250mm : 204 - 510 MHz
## Mount the antennas
The image below explains how the antennas should be mounted. Make sure the array is as straight as possible. ANT-0 must connect to CH-0 on the KrakenSDR. ANT-1 must connect to CH-1 and so on.