Hello everyone, I’m having trouble finding the antenna cable that fits a delco ut4 the cable port is smaller in size than my other radios. Is there a special adapter or certain type, I’m clueless. Here is some pictures:

top is the smaller port that I’m trying to find a cable for. Please help thank you!

 

They make an adapter for the smaller size

 

i knew it had to be something simple, I’ve seen those but I just couldn’t determine if it was a smaller size than what I had. Thank you so much for the help!

 

No trouble...

I have only come across the two sizes, but someone can chip in if there's more...