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Title: 40M. Rotary dipole Post by: TA4AU on February 27, 2012, 08:19:59 AM Hi everyone AMfone - Dedicated to Amplitude Modulation on the Amateur Radio Bands
We built 40M. traps rotary dipole but we have problem empedance and SWR. Traps is 4 cm. diameter pvc pipe and 16 tour. Stars is 3 x 51 cm. aluminum cord Hairpin macth is 2 x 51.5 and 33 cm. I have problem at 40 M. SWR and very low empedance and my pro3 tuners not tune this antenna. also this antenna work at 12 m. i tune antenna very good work no problem but 40M. problem. My next job use 1:2 balun (12 or 20 ohm to 50 ohm balun) https://picasaweb.google.com/112487258095492067574/40MRotaryDipole# what i make need help please. |