Hi;
Tom you should have a friend take a look at that window.  Worked in a 
office full of windows that couldn't or shouldn't be opened.  We were up 
on the 13th floor near lake Erie and once folks figured out how to open 
them we got the nicest breeze.  Obviously that didn't last long.  Not 
sure if they were concern	ed about the air conditioning or worried that 
an upset employee might play superman.  If yours can be briefly opened 
just to get a cable out and then locked your problem might be solved.
We won't discuss how you fit ham radio into your work day.  We had a 
piano tuning teacher back in the day who apparently got his students 
working and then fired up the kwm2 and 30l1 amplifier to chat with his 
friends.  The station supposedly was for the students but there was 
never any organized attempt to help students get their ticket.
Best of luck
-- 
richard