I was able to test this with a cord I borrowed from a PlayStation 1. It worked great with the cord. The battery connections are rusted and the battery cover is missing.
The wire connector it comes with has been cut off but could possibly be spliced onto a new cord. Or you could order a replacement cord for it.
Update* I found a wire that fits and will ship with unit
SONY 6BAND Radio FM/AM/PSB/SW1-3 Receiver, Model TFM-8000W, Tested See Descrip.
$99.99
Non-Domestic Product
Yes
Brand
Sony
Model
TFM-8000W
Features
FM, MW, PSB and Short Waves
Country/Region of Manufacture
Japan
Modified Item
No
Product Line
TFM
condition
Used