[Laser] ARRL "coherent"

[Karel Kulhavy]

> On Thu, 10 Mar 2005, Karel Kulhavy wrote:
> 
> > > I would like to add a few comments on the issue of the ARRL recognizing  only 
> > > transmissions from coherent sources.  It comes from one of  the general rules 
> > 
> > LED's are coherent - they have coherency length at least 100nm ;-) Does
> > ARRL prescribe some minimum coherency length? And if yes, how much it
> > is?
> > 
> 
> I think coherency length was something unknown when the rule was made. 
> Technology has advanced by leaps and strides, so I think it's time to 
> redefine or change the rule.  

Why is it necessary to take into account some ARRL? Can't the amateurs
just do the measurement and compare them by themselves?

Or is ARRL giving out some chocolates for achievements and that's why
it's so interesting?

Cl<