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Instructions Manual

Autek QF-1A, Instructions Manual

The Autek QF-1A is a cutting-edge device designed to enhance communication capabilities. To aid users, a comprehensive Instructions Manual is available for free download from our website. It provides step-by-step guidance and essential tips on optimizing performance and maximizing the QF-1A's potential.

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Summary of Contents for QF-1A

Page 1: ...iary Notch Frequency A notch rejects a narrow band of frequencies such as a whistle or a code station The Aux Notch is present at all times To effectively disable it set it to either 80 or 11 000 Hz The Aux Notch is very wide for easiest tuning and very deep Its 135 1 frequency range is by far the widest ever available for communications and should cover any signal 2 Function Select Switch PK NOTC...

Page 2: ... jack lying on the table then the hum is coming from the receiver and being emphasized because of the light loading by the filter input Several solutions are indicated 1 Check for good contact between the filter input plug and receiver jack 2 Especially if the receiver phone jack is on an auxiliary speaker try connecting some hookup wire between the speaker case and the receiver xcvr chassis or be...

Page 3: ...e of ringing The QF 1A gives you your choice at considerable increase in manufacturing complexity High selectivity will be found to be invaluable in very heavy QRM or pileups allowing you to hear signals inaudible at wider bandwidths but high selectivity is not as useful in thermal noise Note that gain at the peak increases at high selectivity while blasting when the desired signal comes through t...

Page 4: ... TTY SSTV etc reject low frequencies using HIGHPASS Sel and Freq about 10 12 clock experiment Or use notches to reject CW etc You will no doubt discover other settings for voice CW etc not in this table but useful under some conditions or with your own ear preferences There is a conceivable use for almost all of the infinite number of settings under some conditions and with some signals Line Noise...

Page 5: ...aser only and is effective only upon presentation of documented evidence of provable date of purchase This warranty covers only Autek products used for purposes as advertised We are not responsible for incidental or consequential damages Some states do not allow exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gi...

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