Well done on the antenna construction steve and especially out there braving the elements...thats what radio is supposed to be about not just sitting at home and piloting a radio 😁...nice to see you have activity there on 4m ...it used to be good here but now seems as desd as a dodo...have been trying to get some up on 4m again...love the band so keep up zhe enthusiasm steve. Best wishes 👍
i've seen these w a 1/2 wave delay coil, but never a 1/4 wave - does this make a phased delay so that it adds to the other halfwave? please explain your thinking
It is a proven design, it basically works as a matching stub, but has no effect on impedance if you bend it at 90 degrees or keep it straight. Other antennas this would change its impedance. Where the coax joins can fine tune the vswr by small movements up or down ladder line. Regards Steve
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Enjoyed the video very interesting, atb John
Well done on the antenna construction steve and especially out there braving the elements...thats what radio is supposed to be about not just sitting at home and piloting a radio 😁...nice to see you have activity there on 4m ...it used to be good here but now seems as desd as a dodo...have been trying to get some up on 4m again...love the band so keep up zhe enthusiasm steve.
Best wishes 👍
Cheers Steve, great video M7DBD aka YF11
Interesting Video Steve
i've seen these w a 1/2 wave delay coil, but never a 1/4 wave - does this make a phased delay so that it adds to the other halfwave? please explain your thinking
It is a proven design, it basically works as a matching stub, but has no effect on impedance if you bend it at 90 degrees or keep it straight. Other antennas this would change its impedance. Where the coax joins can fine tune the vswr by small movements up or down ladder line. Regards Steve
Thank you for your quick response keep up the great work
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My 4m antenna is a vertical is a colionear
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