I just picked up a Harris 505A and I made a couple videos your viewers might like.
This radio is extremely sensitive as you can see in the comparison videos. I am very lucky to have picked it up. I will add that in the comparison to the Kenwood TS890 I didn’t try the 15 kHz filter on video. I did try it afterwards and I was surprised to receive the weak 6.085 signal with similar results to the 505. I thought for sure that that huge width would only let in more noise but I was wrong. I learned something new! But the 505A is still a super sweet machine.
Thank you for sharing this, Nick! What a wonderful addition to your radio collection. I’ve always loved the incredibly simple design of the 505A and have assumed it would have a very low noise floor.