BAND American Broadcast Band Short Wave (International) Band Police Band (Special Service)

APPROX. TUNING RANGE 550 to 1600 Kilocycles 6.0 to 18.0 Megacycles 1.6 to 5.0 Megacycles

Circuit Diagram, Model 28

Circuit Diagram, Model 92

IMPORTANT ALIGNMENT NOTES When aligning the shortwave bands " OSC " trimmers care must be exercised to see that the circuits are aligned on the correct frequency and not on the image which is approximately 910 kilocycles less as indicated on the dial. To check, increase generator output, tune in the generator frequency and then tune-in the image frequency which should be weaker than the fundamental and corre in approximately 910 kilocycles tower on the dial than the fundamental. If image cannot be tuned-in, the " OSC " trimmer is adjusted to the wrong peak. (Correct peak is the second peak on trimmer from the closed position). Repeat the original alignment procedure for more accurate adjustments. Always keep signal generator output as low as possible to prevent action of the A.V.C, circuit.
Model 29 SOCKET VOLTAGES MEASURED @ 117.55 VOLTY LINE (BETWEEN SOCKET PIN AND CHASSIS) WITH 100) OHM PER VOLT, 500 VOLT RANGE VOLTMETER (D. C.)
PIN NUMBER