Topband: RF Choke for 160m

[Art]

Stein Roar Brobakken LA6FJA-K3RAG wrote:
> Hi
>
> I plan to make a 160m RF choke on a 4-6" PVC tube,
> do anyone have good describtion for how many turns etc I can wound ?
>
> 73s LA6FJA Rag
Rag - at 2MHz:
8 turns RG213 single layer on a 6.625 inch diameter tube will give Z=150 
ohms.
12 turns single layer on a 4.25 inch tube will give Z=131 ohms.
Reference: ARRL antenna book 20th Ed. page 26-23 testing done by K2SQ.

These coax chokes work well at my station.
73 Art