Fisher Gold Bug

[Op04]

When using NTE cross reference must complete with the exact suffix after part no, for LS204 According to Texas Cross ref data showing RC4558 and FOMA has confirm he open a different batch of Lobo which is using 4558 replacing LS204

[Hinkri]

in the first post is it a sketched diagram from the original device without changes? was it with a microprocessor?

[ivconic]

No.
It's the first Gold Bug, complete analogue one, obsolete.