1/4 wave dipole 234 / 7,100 is 32ft 9 each leg coxal fed on 30ft fishing pole set as a inverted vee will work well portable and will not need tuner?
On 28 Jun 2017 16:14, "Joe Puma" <
kd2nfc@...> wrote:
Yes it needs to be at the proper height above ground. Also what type of wire did you use if the wire has insulation there is a velocity factor you must consider. ?
Sent from my iPad
this topic would be for any tx but i have a bitx40
i set up a 40 m dipole according to the calculated length ie (150x0.98)/7.1 but the swr at the low freq end was bad and at the high freq end it was terrible
so i chopped a bit off which improved the swr. I have now got a good swr from 7.0 to 7.2
so why is it now much shorter than the formula length.
maybe because it is only about 8 feet above ground
any antenna experts out there know the answer
terry GM4DSO
