Hi Martin,
Not sure if you have seen the stuff here, https://www.diecastaircraftforum.com/military-model-aircraft/112145-canadian-all-black-voodoo-ef-101b-details.html
Sadly all the picture links seem to be dead but it does mention this:
9). ECM Antenna Summary
This aircraft had a number of ECM antennas fitted:
One forward facing on the upper nose (Replacing the IR Sensor).
Two rear facing below the nose with a small blade antenna between.
Three rear facing behind the canopy (plus one small blade antenna for a total of four).
Two rear facing ones below the fuselage forward of the afterburners. (these are actually the Data Link Antennas that were present on all Canadian Voodoos, however although these appear in profile drawings of the"BLACK VOODOO" they are not evident in any photos seen so far).
Three small bi-directional pod antennas between the nose gear door and the weapons bay. The aircraft was often seen with an ECM Pod fitted to a pylon on the weapons bay door.
Hope that helps a bit
Harry