[TowerTalk] Balun Recommendation

[Steve Hunt]

David,

For a fixed feedline Zo, a change in SWR *always* indicates a changed 
load impedance; and a change in load impedance always causes a change in 
choke dissipation unless the system is perfectly balanced, in which case 
you don't need a choke.

So, the only case where there is no relationship between SWR and choke 
dissipation is one of perfect balance, which I have yet to encounter in 
a practical antenna system.

73,
Steve G3TXQ


On 20/04/2012 15:40, K1TTT wrote:
> I would go with something like this:
> In SOME cases SWR may be an indicator (but not direct cause) of changes in
> the common mode current that a choke would see.  In other cases it has no
> relationship to it.
>
>