If you ever need to carry the C10 on a project but need both hands free (no wheeling the box), then this could just be the perfect solution.
It's a perfect fit. Enough clearance to keep the antenna safe, but enough padding to protect the scanner from knocks. You could also include additional padding (which is included with the bag) in each side and on the front (where the flaps fold over). It will certainly be adequate to stop damage from brushing against objects or from placing it on the ground.
Here's some photos of the bag.
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Amazon Link - http://www.amazon.co.uk/Kata-BP-502-Backpack-Photographers-Videographers/dp/B0006IS25G
Website Link - http://www.hpreston.co.uk/Kata-KT-BP-502-GDC-Backpack/dp/B006VLWB54?traffic_src=froogle&utm_medium=organic&utm_source=froogle