I live in Whitby, Ontario and have the following setup:
	rooftop mounted DB4e on a tripod 30 ft above ground
	CM7777 on the mast.
	No Trees or building obstructing the way
	Antenna is pointed 180 degrees south toward WGRZ
	The feed goes to one TV with ATSC tuner, one Converter Box, and one PC TV Tuner (Hauppauge)
	Passive 8-port splitter
	
	I currently am getting the following stations:
	
		RF20 - CBLT (CBC) CN TOWER
		RF25 - CBLF (SRC) CN TOWER
		RF19 - CICA (TVO) CN TOWER
		RF41 - CIII (GLOBAL) CN TOWER
		RF09 - CFTO (CTV) CN TOWER
		RF47 - CFMT (OMN) CN TOWER
		RF44 - CITY (CITY) CN TOWER
		RF40 - CJMT (OMN) CN TOWER
		RF22 - CHEX (CBC) OSHAWA
		RF32 - WNLO (CW) GRAND ISLAND
		RF43 - WNED (PBS) GRAND ISLAND
		RF14 - WUTV (FOX) GRAND ISLAND
		RF36 - CITS (CROSSROADS) HAMILTON
		RF39 - WIVB (CBS) BUFFALO
		RF38 - WKBW (ABC) BUFFALO
		RF49 - WNYO (MyTV) BUFFALO
		RF33 - WGRZ (NBC) BUFFALO
		
What I am finding is that WGRZ is very flakey in the cold winter months. Basically not there from December to March.
All other stations are very strong. 
Is there any way of getting the following?
		RF33 - WGRZ (NBC) BUFFALO - Want this to be stronger so I get it in the winter as well all the time.
		RF11 - CHCH (CHCH) HAMILTON  - Can't grab this one, only in the nice summer days
		RF23 - WPXJ (ION ) BATAVIA - Again I get this one on the nice summer days, but it does not last
		RF7 - WBBZ - Similar to CHCH, but no nearly as stable, only comes in couple days a week in the nice summer days.
		RF16 - WXXI PBS Rochester . This one is odd. This one is another fair weather station, but is more stable than RF11 and RF7, but further away.
		I also want to grab a CTV2 feed. Either RF35 CHCJ Hamilton, RF42 CKVP FONTHILL, or RF10 CKVR Barrie. So far I can only get a whisper of RF42.
I was thinking of elevating my DB4e to 55 ft. Do you think this will help getting my wish list? Or are there other things going on that I am not aware of?
Here are my TVFool Reports
30ft - 
http://www.tvfool.com/?option=com_wr...1dda5c4dcd7097
55ft - 
http://www.tvfool.com/?option=com_wr...1dda718de09e76
Thanks.