Yep, think the HAM signal would be minute compared to what it gets hit with from the NAVSPASUR, USA Radar on 216.980Mhz !!
Mark VK3MJ Geelong, Australia.
-------------------------------------------------------------------------------- Already discussed on the MoonNet reflector:
Subject: Re: [Moon-net] ISS communicaton NOT a GOOD idea !!!!
Hi Steve ,
Even our "big" signals are small when they arrive up there . Assume you use 1kw and 20dB antenna gain , this makes an ERP of 100kw or 80 dBm ERP, once your signal is +/- 600km further then you have about -130dB less power due the path loss (on 144MHz) , this means that your signal arrives at ISS with a level of -50dBm , so nothing to worry about .
Best regards, Kenny ON4DPX
At 07:49 PM 12/11/2007, Greg D. wrote:
I thought of doing this back in October, when all the Sputnik-1 / early satellite discussion was happening. Echo-1, and all that. But, I would think that NASA (if not the crew) would frown on a bunch of folks on the ground hurling a few megawatts EIRP at their home in outer space. If Bob had to have a bazillion levels of safety in place for the little PCSAT-2 transmitter, I would think this would be right up there in the safety category, no?
I haven't done the math yet... Are we far enough away that 1/x**2 saves us?
Greg KO6TH