[MrFixr55]

Looking at the pic supplied by Rod B, you can duplicate the missing loop antenna. 10 gauge copper wire can be used to make the antenna. The spacing between loops is approximately 3/8 - 7/16 in. There are 4 turns to the loop. TThe loop OD is equal to the ID of the cabinet. Try to duplicate the insulators. You can use thin plastic, Zip ties, etc. Try to keep the copper from touching the wood case. Alternately, you can use insulated solid 12Gauge THHN cable. This loop connects between screw 1 and 2 of the 3 screw antenna terminal. This should improve reception, especially if you have local stations. Compare reception to another vintage radio with a built-in non-ferrite antenna. (Ferrite loopstick antennas tend to be more resistant to noise. )

Before connecting the homemade loop antenna, ohm between terminals 1 and 2 with the switch in broadcast. There should be a relatively low resistance. If open, either the antenna coil for broadcast band is open or there is an issue with the band switch.

For AM Broadcast, an external "long wire" arial can be hooked to screw 1 of the terminal. Ground the chassis.

Hope this helps.