Thursday, July 21, 2022

Broad Band Terminated Dipole


 The antenna that I started to build a few weeks ago has now been roughly strung out around the perimeter of the garden. My main aim is to be as stealthy as possible. The two lengths of wire together add up to about 132 feet. I connected it all up and plugged it into my analyser. I was really delighted with the SWR readings. from 1MHz up to about 23MHz the readings were very good - all below 2 and as low as 1.2 on the lower frequencies. Beyond this frequency, the reading starts to creep up until on 10m band it is just over 3. I am not worried about this at the moment because I intend to lengthen each leg of the antenna up the gable end to the roof and also tidy up the run in the garden, particularly away from metal objects and such. This should add about 100 feet to the total length bringing it up to a total of about 230 feet. The final SWR reading can then be determined.

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