| Alliance Corporation - Mississauga (ON) |
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| Anixter Canada Inc. - Mississauga (ON) |
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| Broadcast Extension Sys. Tech. - Princeton (BC) |
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| Capella Telecommunications Inc. - Peterborough (ON) |
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| ESA Communications Systems - Peterborough (ON) |
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| G. S. Broadcast Technical Services Ltd. (Oakwood Division) - Mississauga (ON) |
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| Infosat Communications LP - Calgary (AB) |
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| Novanet Communications Limited - Ajax (ON) |
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| Pippin Technical Service - Saskatoon (SK) |
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| PrimaSat Communications inc. - Mirabel (QC) |
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| Westower Communications Ltd. - Surrey (BC) |
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