Starting-dimension relations published by builder Cris McBride(KB7QXQ), restricted here to144–470MHz. All lengths are pre-tuning estimates. Materials, dielectric, conductor size, feedline and surroundings require antenna-analyzer tuning. No guaranteed resonance, SWR or gain, and no transmission/license suitability decision. A particular ladder-line product may have different fixed conductor spacing.
Starting-dimension relations published by builder Cris McBride(KB7QXQ), restricted here to144–470MHz. All lengths are pre-tuning estimates. Materials, dielectric, conductor size, feedline and surroundings require antenna-analyzer tuning. No guaranteed resonance, SWR or gain, and no transmission/license suitability decision. A particular ladder-line product may have different fixed conductor spacing.
Enter your values and run the tool to see your result.
Check the units, enter your values, and run the tool. Results follow the assumptions and method below.
705/frequency*12234/frequency*1223/frequency*1222/frequency*12