Re: Tarter speaks at Stanford

hello

David Woolley wrote:


> 
> Note that Ku band dishes will need to be used at rather higher frequencies
> than the hydrogen (hyperfine) line, and are generally lined up in a high
> interference region of the sky.  The higher frequencies mean that you are
> out of range of off the shelf scanners and TV LNBs don't have adequate
> frequency stability.  Satellite TV also has power budgets based on fairly
> old technology, so LNBs do not have to be as low noise as current technology
> allows and is available for around US$100 as a C band LNA.
> 
> Actually, if you intend to use the same dish for TV, you will need to
> use the high specification LNB, as a separate feed would not be at the
> focus (although the dishes are small enough that the penalty for being
> off the prime focus may not be that great).


is this high specification LNB easily (near the road corner) available?
costly?

thank you for you input.

alain.

nospam s w a p with dot astro