K7ZGQ-ANTENNAS,P.F.O. Skunkworks

                                            40-6 Meter Inverted L Off Center Fed Dipole #OCFD #OCF  Here is what I came up with after ruining a few hundred feet of wire experimenting. Its not the best OCF ever made but it was cheap takes up very little space and gives me 100% of the 40 meter band without too much compromise. If you only have a small yard this is a amazing antenna for 50 foot of space.

I accidently came across a post on radioreference and thought this lone post was very interesting. Maybe a good idea for someone with very little real estate. thanks Hertzian!   End-Fed OCFD I wanted to put some items that weren't being used to good use, and came up with a general purpose end-fed OCFD for hf. I'm currently using it for rx-only. Essentially, it is a 4:1 UNUN in the center of the ocfd dipole, and at one end of the transmission line, is an 1:1 RF choke balun, and after that another run of coax into the shack. Being basically a non-resonant antenna, I'd keep jumper 2 no longer than about 50 feet to help keep the swr losses down. Schematically it looks like this: [ Receiver ] ----- jumper 2 ----- [1:1 RF Choke] ---- jumper 1 ------ [4:1 UNUN] ------------- wire ----------------- *The coax jumpers are 50z LMR200. Jumper 2 is about 25 feet from the receiver to the choke just to get it outside. * The 1:1 RF choke is an MFJ 915 * Jump...

Decided to experiment with an off center fed 40 meter inverted L dipole. the short side is around 17 feet long and represents the vertical portion of the OCF dipole. My antenna is so low because I do not have room for a much more extensive design. the long side is around 48-49 feet long (I eyeballed it sorry. The antenna is 25%/75%) and I used the balun design posted by PU2YYP on his blog. the SWR is decently low on every resonnant band and the tuner has no issue tuning everywhere 6-40 meters. I consider this very worthwhile to build for a ham with very little space and it is very forgiving if you decide to slope the antenna down or bend the ends a little.