Note
QST, Apr 1939, p. 118.
This is probably the BL-5H. The model number is not stated until the ad in QST, Oct 1939, p. 102, but no image is shown.
Lafayette catalog number 82, p. 119.
Kit: $13.50 less tube
Assembled: $16.50 less tube
References
Building. Radio Craft, Sep 1939, p. 156.