Broken Antenna on NRF Module ... quick fix?

Hi Guys,

Banggood was kind enough to deliver an NRF module today with a broken antenna. I'm not looking for anything high performance - < 200m around in my backyard (it's a big back yard .

Before you ask i did google this.... there are many numbers "on the web" for antenna length ranging from 26 - 31.25. Pretty sure 26 is too low and 31.25 (while correct in concept) maybe isn't appropriate.

Can I:

• chop the top of this off
• remeasure 28mm (??)
• peel off all the grounding wires for that length
• leave the sheath on the now exposed signal wire
• solder the bottom bell back on somwhere below the newly exposed wire - to the grounding wires?
• leave the top bell off

Think I'll be left with something that gets reasonable performance with this plan? Any suggestions? Should I just skip the bell on the bottom and on top?

If the top bell is required. Would anyone be able to explain how that's soldered? Is it to the core / signal wire?

in my opinion would peel 27 , someone say 26 other 31.25mm but last i guess is for receivers put botton bell and leave upper off