Correction to my previous post.?
I do not use RG-400 jumpers, I use RG-142 coax jumpers.
Both RG-400 and RG-142 have similar specs with the exception of RG-142 has a solid center conductor
and RG-400 has a stranded center conductor.?
I find the flexibility of the center conductor RG-142 to be suitable for short connections in the shack.?
If I were to make a tightly wound choke RG-400 would be the appropriate choice.
I buy RG-400 jumpers for all my inside the shack interconnections.?
Entering the shack, I have a mix of N connectors for Heliax LDF4 Superflex and PL-259 connectors for RG-213 coax for antenna connections/terminations from the outside antennas.?
When I buy the RG-400 jumpers I specify the cable connectors for each end to keep from using adapters inside the shack.