Whenever about six inchs or more of the antenna is in good shape Then I suggest to most that its actually not a good idea to replace the entire antenna and for them its a much better idea to do the simple splice.

Doing a circuit board replacement requires a much more precision soldering job with the appropriate iron. Trouble is many people are not comfortable with soldering and or do not have an appropriate iron. The place to learn soldering is precisely on simple antenna splicing or cutting servo leads to custom length and splicing not doing circuit boad work.

I,ve seen quite a few rx's that were essentially destroyed by bloobed up traces in attempted antenna replacements.

John