http://208.190.133.201/bta250/ref/rca1k.html
I put the pages from an old text up, they describe the theory,
operating, and tuning of the AM broadcast rigs RCA 1-K and the
BTA-250K (or BTA-250L as they seem almost identical)
Does anyone know the difference between the BTA-250K and the
BTA-250L? Can't tell from the pics and examination.

