[Radio] Making a good Antenna for a High Altitude Balloon

[caption id="attachment_1918" align="aligncenter" width="289" caption="The housing of the antenna, foam keeping everything stirdy and straight"][/caption]

[caption id="attachment_1914" align="aligncenter" width="275" caption="The woven shield stripped down a RG85 wire"][/caption]
[caption id="attachment_1915" align="aligncenter" width="300" caption="Spread the stripped shieldwire into four ~equal pieces"][/caption]
[caption id="attachment_1916" align="aligncenter" width="300" caption="Then when the shaft is in, divide four wires and spread them out"][/caption]
This concludes the how-to. The result is the following. And, afterwards, do make sure that the aluminium plane is conducting with the ground of your wire, and the driven element is not conducting to your groundplane.
[caption id="attachment_1917" align="aligncenter" width="620" caption="All done! The result with a nice big groundplane to reflect the 1/4 wave"][/caption]
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2 Responses

  1. Rahul Parameswaran says:

    it will be helpful if specifying which are the types of antenna we can use at high altitudes (80 km) and about rf modules at that altitude

  1. September 16, 2011

    […] I devoted a seperate article on making a good antenna here. […]