Re: [amsat-bb] Is AO-40 70cm uplink possible from inside apartment?

[Arthur H Feller <afeller@xxxxxxxx>]

At 01:11 PM 27-01-2004, Mennerich, David R wrote:
>Do you think uplinking through an apartment window is my problem?

Depends on the window.

Suggest looking at the edge of the glass where it meets the frame.  If you 
see a what looks like a dark, wiggly line running the length of the frame, 
you've got "insulated" glass.  It works by using a metalized mylar film to 
(1) filter out infrared and (2) trap two insulating air spaces.

The metalized mylar film, in my experience, is a terrific radio 
reflector.  Mount this to a building made of concrete, a good radio 
absorber, and you've left yourself inside a radio quiet room.

This is the same problem which police, fire, and rescue folks find when 
they take their hand held radios inside apartment and office 
buildings.  You're not alone.

Solutions: open the window or go portable.

Hope this helps.

73, art.....
W4ART  Fairfax, VA 


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