Manual RadioShack PRO-2049 - 90 Channel (page 27 of 40) (English)

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BIRDIE FREQUENCIES

Every scanner has birdie frequencies.

Birdies are signals created inside the

scanner’s receiver. These operating

frequencies might interfere with broad-

casts 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

clock-

wise to cut out the birdie.

The birdie frequency to watch for with

this scanner is 489.25 MHz.

To find the birdies in your scanner, be-

gin 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 scan-

ner. Use the search function and

search every frequency range from its

lowest frequency to the highest. Occa-

sionally, 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.

UNITED STATES

BROADCAST BAND

In the United States, there are several

broadcast bands. The standard AM

and FM bands are probably the most

well known. There are also four televi-

sion audio broadcast bands — the low-

er three transmit on the VHF band and

the fourth transmits on the UHF band.

You can use your scanner to monitor

the 470

512 MHz range of the UHF

band.

20-419.fm Page 27 Wednesday, March 24, 1999 2:43 PM

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RadioShack PRO-2049 - 90 Channel Manual

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