Redesigning a Yagi

[VK2CSW]

Consider each half element a loaded 1/4 wave whip and use something like this to determine your inductor when scaling :
https://m0ukd.com/calculators/loaded-qua...alculator/
It won't be exact but will provide a guide. 

Remember to scale the spacing between REFlector / DIRector and Driven Element too.  A DE plus DIR usually gives slightly better gain than a DE plus REF when dealing with 2 element arrays.

Typically tune the DE to desired frequency, a DIR to about 5-10% higher, a REF to 5-10% lower.

Final tip:  don't actually cut the excess wire length (stage 8 step 2) when going through the tuning process - simply fold it back along the element length initially. Once the proper tuning point is found, only then do you trim the folded-back wire.

Thanks Doug.

Having a read now.