OCF Antenna
Please note SWR values may vary from each installation. 

Disclaimer:  Wire antennas are susceptible to lightning.  Following best GROUNDING practices is recommended !   Myself and or the designers of this antenna take NO responsibility for anything – you are at your own risk.   

Having recently helped a local HAM create the same installation at his QTH… we found better SWR readings on some bands and worse on others.  After multiple attempts to fine tune the OCF we ultimately found sticking with the original dimensions and letting a tuner clean up the SWR appeared to work the best.  We used 3/32 steel cable for the radiators which seems to develop oxidation over time slightly changing the SWR on some bands.    

Overall it appears to be a good multiband antenna allowing me to join the Cracker Barrel net from Indiana without much difficulty.  Gain over a dipole on the higher bands appears to be better… to a point, depending on orientation of the antenna wires  IE: Inverted V, Sloper, and so on.

FINE TUNING:    From experience it appears to be far safer to stick with the original dimensions and only alter the length of the LADDER LINE by adding or decreasing its length.     

Disclaimer:   Wire antennas are susceptible to lightning.  Following best GROUNDING practices is recommended !   Myself and or the designers of this antenna take NO responsibility for anything – you are at your own risk.   

SIDE NOTE:  No Electrons appear to have been injured 
                      or destroyed in the making of this antenna 😉  

4:1 OCF Balun  160 to 6 Mtrs
https://www.balundesigns.com/model-4115-dual-core-4-1-current-balun-5kw-1-54-mhz/?gQT=0

500′ role of 3/32 cable  (keeps the weight down)
https://www.homedepot.com/p/Everbilt-3-32-in-x-500-ft-Galvanized-Steel-Uncoated-Wire-Rope-806330/203958859

Aluminum cable crimps
https://www.homedepot.com/p/Everbilt-3-32-in-Aluminum-Ferrule-and-Stop-Set-43244/205883069?MERCH=REC--fbt_test--203958859--1--n/a--n/a--n/a--n/a--n/a

73
Pete
KA1GHF

reposted with permission N1JXQ