Albrecht AE75H 50-Channel Portable Scanner Owners Manual

							AE75H OWNER’S MANUAL
11 GENERAL GUIDE TO SCANNING
BIRDIE FREQUENCIES
Every scanner has birdie frequencies. Birdies are signals created inside the scanner’s receiver. These
operating frequencies might interfere with broadcasts on the same frequencies. If you program one of
these frequencies, you hear only noise on that frequency. If the interference is not severe, you might be
able to turn SQUELCH clockwise to cut out the birdie.
To find the birdies in your scanner, being by disconnecting the antenna and moving it away from the
scanner. Make sure that no other nearby radio or TV sets are turned on near the scanner. Use the
search function and scan every frequency range from its lowest frequency to the highest. Occasionally,
the searching will stop as if it had found a signal, often without any sound. That is a birdie. Make a list of
all the birdies in your scanner for future reference.
SPECIFIED INTERVALS
Frequencies in different bands are accessible only at specific intervals. For example:
Frequency RangesSpecified Interval
68-88, 137-144 and 146-174 MHz5.0 kHz steps
144-146 and 380-512 MHz12.5 kHz steps
108-137 MHz25 kHz steps 
						

							AE75H OWNER’S MANUAL
12 TROUBLESHOOTING
If your scanner is not working as it should, these suggestions might help you eliminate the problem. If
the scanner still does not operate properly, take it to your local store for assistance.
ProblemPossible CausesRemedies
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The scannerThe AC or DC adapter is notBe sure the adapter is plugged into
does not workproperly connected.a working AC outlet or cigarette-
at all.lighter socket, and is fully
inserted into the scanner’s
PWR jack.
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The internal batteries/batteryCharge the rechargeable batteries
pack needs to be recharged, oror battery pack, or replace non-
the non-rechargeable batteriesrechargeable batteries with fresh
are dead.batteries.
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Poor or noImproperly connected antenna.Be sure the antenna is properly
reception.connected.
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Programmed frequencies are theAvoid programming frequencies
same as birdie frequencies.listed under “Birdie Frequencies”
on Page ??.
-------------------------------------------------------------------------------------------------------------------------
Scanner is on,SQUELCH is not correctly Adjust SQUELCH clockwise (see
but does notadjusted.“Turning On the Scanner/Setting
scanVolume and Squelch”.
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In the scanProgrammed frequencies are theAvoid programming frequencies
mode, thesame as birdie frequencies.listed under “Birdie Frequencies”
scanner locksor only listen to them manually
on frequencies
that have an
unclear trans-
mission. 
						

							AE75H OWNER’S MANUAL
13 RESETING/INITIALIZING THE SCANNER
If the scanner’s display locks up or does not work properly after you connect a power source, you might
need to reset or initialize it.
Important: If you have problems, first try to reset the scanner. If that does not work, you can initialize the
scanner, however, initializing clears all frequencies you stored in the scanner’s memory and initialilzes
the scanner to its default settings.
Resetting the Scanner
1. Turn off the scanner, then turn it on again.
2. Insert a pointed object, such as a straightened paper clip, into the reset hole on the side of the
scanner. Then gently press and release the reset button inside the opening. The display goes blank,
then information reappears.
Initializing the Scanner
Important: This procedure clears all frequencies you stored in the scanner’s memory and initializes the
scanner to its default settings. Initialize the scanner only when you are sure the scanner is not working
properly.
1. Turn off the scanner, then turn it on again.
2. While holding down CLEAR, insert a pointed object, such as a straightened paper clip, into the reset
hole on the side of the scanner. Then gently press and release the reset button inside the opening. The
display goes blank, then information reappears.
Note: You must release the reset button before you release CLEAR. Otherwise, the memory might not
clear.
3. When the display reappears, release CLEAR.
CARE AND MAINTENANCE
The following suggestions will help you care for your scanner so you can enjoy it for years.
Keep the scanner dry. If it gets wet, wipe it dry immediately.
Use only fresh batteries of the required size and type. Always remove old and weak batteries. They can
leak chemicals that destroy electronic circuits.
Handle the scanner gently and carefully. Dropping it can damage circuit boards and cases and can
cause the scanner to work improperly.
Use and store the scanner only in normal temperature environments. Temperature extremes can
shorten the life of electronic devices, damage batteries, and distort or melt plastic parts.
Keep the scanner away from dust and dirt, which can cause premature wear of parts.
Wipe the scanner with a damp cloth occasionally to keep it looking new. Do not use harsh chemicals,
cleaning solvents, or strong detergents to clean the scanner. 
						

							AE75H OWNER’S MANUAL
14 SPECIFICATIONS
Frequency Coverage
68-88 MHz
108-137 MHz
137-174 MHz
380-512 MHz
Channels of Operation50 Channels and 1 Monitor Memory
Sensitivity (20dB S/N):
68-88 MHz0.7 uV
108-137 MHz1.0 uV
137-174 MHz0.7 uV
380-512 MHz0.7 uV
Selectivity:
+/-10kHz-6 dB
+/-18kHz-50 dB
Spurious Rejection:
68-88 MHz50 dB at 78 MHz
108-137 MHz50 dB at 124 MHz
137-174 MHz50 dB at 154 MHz
Scanning RateUp to 25 channels/second
Search RateUp to 50 steps/second
Delay Time2 seconds
Intermediate Frequencies (IF):
1st
10.7 MHz
2nd
455 kHz
IF Rejection: 10.7 MHz70 dB at 154 MHz
Squelch Sensitivity:
ThresholdLess than 0.5 uV
Tight(S+N)/N 25 dB
Antenna Impedance50 ohms
Audio Output Power200 mW Nominal (10% THD)
Built-in Speaker36 mm, 8-ohm Dynamic Type
Power Requirements9 V DC, 6 AA batteries
AC adapter/DC adapter (9V, 200 mA)
Current Drain (Squelched)50 mA
Dimensions171 (H) x 59 (W) x 40 (D) mm
Weight240 g without antenna and batteries
Supplied AccessoryAntenna
© 1998 ALBRECHT ELECTRONIC GmbH