Tuesday, March 5, 2024

It's antenna farm time.

Before I purchased my Hustler 4BTV vertical antenna I was using a 45 foot End-fed antenna. I have kept the End-fed antenna coiled up and ready to go along with the coax still attached. The Hustler vertical only gives me 40, 20, 15 and 10m which is great for contesting BUT if I wanted to venture on to other bands it would mean using the End-fed antenna. Also during high wind storms or freezing rain, I have taken the Hustler vertical down and left with no antenna. I have been thinking of bringing the End-fed antenna back to life and using it when the Hustler is down due to weather and to venture on the bands the Hustler does not cover. 

I rehung the End-fed antenna recently to run it through the paces with my antenna analyzer to make sure after sitting unused for so long there were no issues. It checked out just fine and the SWR was decent and where it was a bit high my trusty LDG AT-200pro II would look after it. The main obstetrical for me is the proximity of the two antennas when they are both up at the same time. My next test was to connect my End-fed antenna to my Daiwa CN-901 antenna port and a 50-ohm dummy load to the radio port. I then wanted to transmit 100 watts into my Hustler 4BTV antenna and see what type of reflected power the Daiwa CN-901 SWR meter was showing. Below are the results for 40, 20, 15 and 20m on the 20 watts scale.


40 Meters

20 Meters

15 Meters

10 Meters

The reflected power was not significant and 10m was the highest. I plan to disconnect whichever antenna I am not using and connect it to a 50-ohm dummy load. In the future, I may prefab a 12-volt relay to switch between each antenna and use the relay contacts as the isolation point. For now, it is going to be the dummy load solution.

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