[Laser] 45 km QSO XE2AT

[Art]

>Dear friends, yesterday Jul 7th around 0425 UTC XE2ZB and me XE2AT 
>completed the 45 km QSO in CW using now > 5 mw pointers ( is a pen pointer 
>) and the same receiver from Ramsey with the OPT101 mod that Art K1YK 
>design......
>     After 1 hour finally we can located each other and was amazing the 
> receiver sensibility !!! I can hear very strong the signal from XE2ZB...
>


Congrats Al! And, thanks for reporting the progress here.

I am curious how much extra sensitivity you had...how clear was the 
received signals?

Also, did you try blocking the lens with your hand to get any idea how much 
area your really needed to complete this distance???

Art