Due to the enourmous size of 3 element Yagi and the current working condition on 10/11 meter band, I decided to accept the advice of 9W2RZL and thinking of constructing a directional antenna right after I obtain the 11/10 meter rig (which is maybe around April).
Moxon antenna might suit my need as it is :
- directional
- has gain of around 5 dBi
- Compact and Light weight
- Easy to construct
- designed for 50 Ohm impedance
- Wideband
- Great F/B ratio, useful for blanking noise
Here is the plan for the 10 meter Moxon antenna, centered on 28.5 MHz frequency.
Dimensions
- A – 382.43 cm (150 1/2 inch)
- B – 57.13 cm (22 1/2 inch)
- C – 11.02 cm (4 3/8 inch)
- D – 71.06 cm (28 1/4 inch)
- E – 139.76 cm (55 inch)
These calculation are made for 12 gauge wire using L. B. Cebik Moxon Calculator tool. The Moxon on the above photo belong to Mark Rabel
I wonder what the radiation pattern of the Moxon look, vs a Yagi ? I know that Cebik mentioned this antenna, and it is small enough to work on my roof.
My qth is small, but I can use the roof of my home here in Tampa to mount this antenna. Perhaps a small, roof mounted tripod, and my location here in Tampa near salt water will help a small roof mounted antenna work better ?
Hi Chris, I believe I’ve simulated my Moxon radiation pattern using MMANA-GAL over-here : http://please.name.my/173/moxon-antenna-plan-for-27mhz-cb-and-freeband-operation.html