Tom ya gotta quit thinking

as noted above you can't mix Bell & Dish on the same box or switches. So IF (key word is IF) Bell does get 72.5 up then just use the equivalent of a Dish 1000. That would get 3 satellite spots and with a DP34 switch 4 receivers and extra switches can be added.
As for Dish
121 is dead. Dish stripped everything off of it because you needed a bigger dish. Same with 105. Those channels are gone and moved to other spots
61.5 & 129 carries the HD....129 doesn't work in Canada. Hell it barely works in the US
IF you want to try this, don't use Bell crap. Its recycled Dish crap. Go DishPro. Much easier
OK
OK. NY spots won't hit Ottawa. They don't even hit western NY. National HD is there (61.5)
IF Bell goes with 72.5/82/91 (who knows if they will), my god get a equivalent of a Dish 1000. 3 LNB's seeing 3 sats and you can hook 4 receivers to it using one switch.
yeesh..if you must use the SW44 then fine. I'd upgrade both LNB's to DishPro and get a DP44 switch. Then you can use 4 satellites and if you upgrade the Dish box to HD dual tuner then you can use just one cable for both tuners
see above. 121 is dead. Everything is stripped off of there. All that was on there recently was locals but those moved to 129 or 110. 129 won't work in Ottawa and has the same HD as 61.5 does
Why would Bell use 129? I could see 72.5/82/91 and again if you must feel the need to stay with Legacy switches (god knows why) then a SW64 would be what to use.
you don't need all of them. 110/119/61.5 would work with what you need for HD. UNless you need an International channel (greek package maybe?

) then you need 110/118.7/119/61.5. The only thing right now for 118.7 is a Dish500+ or Dish1000+ Then you'd HAVE to go DishPro
Tom that makes no sense. Its not the LNB's that are "special". DishPro is the way to go for 3 reasons
-one cable from each satellite spot to the switch...so you'd have 3 cables going to the switch instead of 6
-switches can be cascaded easily. DP34 switches allow 3 inputs 4 outputs and can be cascaded for 8 even 12 recievers
-get a DPP44+ switch and dual tuner boxes only need one cable
If you are using 2 receivers and 2 satellites then Legacy equipment (SW44, SW64) works fine. BUt if you are going beyond that, switch to DishPro. MUCH easier
DirecTV