1924 Crosley 52

This is a 1924 Crosley Model 52 AM receiver. It is battery powered, has 3 tubes, and is a regenerative receiver. The first tube is the regenerative detector, the second is an audio amplifier, and the third is a second audio amplifier. Tuning is accomplished by selecting one of 5 taps on the coil and then turning the large dial until the desired station is heard. Feedback for regenration is accomplished by pulling the knob to the upper right of the large dial in a out. Pulling it out increases the coupling and therefore the feedback. Optimum operating point for regeneration is just at the point of oscillation. The radio is similar to the 2-tube Crosley Model 51 I have. The operating principle for both radios is the same - the only diffrence is that the Model 52 has one additional stage of audio amplification.

This radio measures 13 3/4 inches long, 6 inches high, and 4 3/4 inches deep. It has the same dimensions as the Model 51 except the Model 52 is longer to accommodate the extra tube.

Below is a picture of the inside of the receiver. Note that the right-most tube has a sticker with a date of "Nov. 10 28".

The radio works quite well. With a little tuning, I was able to pick up WSM in Nashville, TN very clearly with loud volume and good tone. Nashville is 100 miles north of Huntsville. The regenerative control is critical to tuning. If it is not adjusted correctly, a squeal can be heard and/or local stations will be heard in the background. At the point of regeneration, the selectivity is quite sharp and distant stations can be clearly heard over the local stations.

Tube Compliment

Detector	1st AF Amplifier	2nd AF Amplifier	Rider's Manual Page #
'01A or X'99 or 12	'01A or '12A '71A or X'99 20 or 12	'01A or '12A '71A or X'99 20 or 12	1-16