On top is a picture of the oddball signal with SDP compared to two different CD 162.3 Brookfield signals. The top pic is identical to the last on ein this series ([id=250000808] to review this pic)

Signal A is an oddly dark Brookfield 162.3 with a backwards 4 on top

Signal B is a Brookfield 162.3 with a 1 on top.

Signal C is the oddball SDP.

In the bottom pic, the oddball was turned into a red overlay and signal A was turned into a green one:

Signal A was overlaid onto B (blue 162.3) and the oddball (C in red).

The oddball (C) was turned red and put over signal A.

This shows the oddball is similar to signal A & B (although both 162.3's are slightly different from one another in profile).

So the oddball might be a CD 162.3 SDP Brookfield - a newfound signal type for the 162.3 and a newfound 162.3 SN also?!