[Elecraft] K3 - A different RTTY question

[Don Wilhelm]

Logical observations.
Like all narrow filters, they are useful if you are doing S & P and are 
willing to tune carefully, but they can be too narrow for a run station 
where callers may not be right at zero-beat (unless you are willing to 
use RIT slowly to find them).
Dual Passband Tuning does create a quite narrow passband (a pair of them 
in fact).

73,
Don W3FPR

ww2r2 at g4fre.com wrote:
> Exactly my findings at MW2I. Normally we dont use dpb as incoming signals 
> arrive all over the place frequency wise (in arrl rtty 2010 3 people called 
> over 1.5khz off!) outside the dpb passband. However it does help with really 
> weak signals when you have QRM 
>
> Dave 
>
> ww2r 
>   
>