Re: LF: Lazy Man's CW made it to Venus and back

[Piotr Młynarski <sq7mpj@toya.net.pl>]

Dave Pick wrote:

> How many miles per Watt is that?!!
>
> Dave 'YXM
Hi Dave , LF
by the time of amsat-dl experiment  the distance between Earth and Venus 
was  abt 45 milions  km  ( 45*10^6 km) so it takes twice
that distance to  "see"  the reflected signal , therefore, it takes  
roughly 300 sec  or 5 minutes  of 'waiting' :)
( speed of light 3*10^5 km/sec)  and as Wolf, dl4yhf   said  it was 5  
kilowatt  tx power thus making 18 000 km per watt
btw,  it seems to be of the same order as the best  wspr  HF beacon  rx 
on earth :)
                       73, peter, sq7mpj

qth: lodz, poland /jo91rs/