Taksa

Collinear Super-Js work pretty well and are cheap to build. The J Pole often suffers because most tend to ignore common mode issues which leads back to lame incomplete antenna design. Pin On Ham Radio By replacing the phasing stub with a simple coil the answer is yes. J pole vs collinear . Indeed although many folks like to bandy the gain advantage of a collinear arrangement as 3 dB greater than a single section we rarely obtain in real antennas more than about a 20-25 dB. The calculator can be used for designing a Super J-Pole antenna for just about any frequency or it can be used for the standard J Pole antenna by leaving out the top section. Note the collinear 58 wave J-Pole does indeed perform about as well as a regular J-Pole in these circumstances at this particular azimuth. This causes the two collinear 12 wave radiators to be fed in-phase causing their signals to reinforce. A traditional J-Pole consists of a 12 wave radiator and a roughly 12 wave tuning U at the bot...