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Hallicrafters Dd1 Communication Receiver Instructions
Hallicrafters Dd1 Communication Receiver Instructions
Here you can view all the pages of manual Hallicrafters Dd1 Communication Receiver Instructions. The Hallicrafters manuals for Communications receiver are available online for free. You can easily download all the documents as PDF.
Page 11
The A and B balance control consists, as Indicated by the schematic, of two controls on one shaft. In order to obtain most satisfactory diversity reception it has been determined that the gain of each receiver section should be relatively the same. Where the signal input to the two receivers is unequal as shown by a lower average reading on either A or B diversity meter it will be necessary to reduce the gain on the side getting the greater signal. This is accomplished by turning the A or B balance...
Page 12
REJECTER THEORY AND OPERATION The Infinite Adjacent channel Rejecter enables the operator of the Model DD1 Receiver to cope with Interference more capably than ever before. The Frequency at which rejection occurs is indicated by the position of the pointer in reference to the calibrated scale. This control varies the amount of bucking capacitive coupling between the coils in the I.F. transformers from 3 KC to 18 KC. Rejection is accomplished by so arranging the Inductive and capacitive coupling in...
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