In late 1939, a pair of Walruses were used at Lee-on-Solent for trials of ASV (Air to Surface Vessel) radar, the dipole aerials being mounted on the forward interplane struts.
I am going to make some ASV dipole aerials and mount them on the outer wings with a receiver aerial (or was it a transmitter aerial I am a bit vague) between the engines above the cockpit.
I have a couple of 250lb GP bombs in the spares box which I can sand the noses flat to look like AS bombs.