| Brand | HFJ Compatible | Notes |
|---|---|---|
| American Flyer | No | |
| Atlas | Yes | If the frog is metal (Custom Line). Not if the frog is plastic. |
| Fast Tracks | Yes | |
| Marklin | X | Not tested. |
| Micro Engineering | Yes | |
| Peco Electro-Frog | Yes | As long as the wire jumpers to the frog are cut and are attached to the Hex Frog Juicer. |
| Peco Insulated Frog | No | |
| Shinohara Electro-Frog | Yes | As long as the wires to the frog are cut. |
| Shinohara Insulated Frog | Yes | |
| Walthers | Yes | As long as the wires to the frog are cut. |
