This image shows what appears to be an experimental receiver antenna array for the ASV Mk. II radar, as installed on a Douglas Digby (B-18 Bolo) aircraft of 751 Squadron RCAF in Rockcliffe, Ottawa. The ASV Mk. II is normally received on two antennas that look similar to a log-periodic antenna, similar to those used to receive over-the-air VHF TV signals. This antenna is much larger, and appears to be an experimental design, likely an attempt to improve the Mk. II's relatively short range in the forward direction.