20-521.fm Page 65 Wednesday, August 4, 1999 3:32 PM

PROBLEM

POSSIBLE

REMEDY

CAUSE

 

 

 

 

 

 

 

 

 

 

 

Scanner will not

No IDs have

Store one or more

stop while scan-

been stored.

IDs (see “Scan

ning a scan list.

 

Lists” on Page 48.

 

 

 

 

The IDs you have

Scan another

 

stored are not

transmission.

 

active.

 

 

 

 

Scanner will not

SQUELCH is not

Adjust squelch for

acquire a data

correctly adjusted

trunk tracking.

channel.

for trunk tracking.

See “Setting

 

 

Squelch for the

 

 

Trunk Tracking

 

 

Mode” on

 

 

Page 41.

 

 

 

 

The frequency

Press SRC to

 

used for the data

search for the

 

channel is miss-

data channel (see

 

ing.

“Storing Trunked

 

 

Frequencies” on

 

 

Page 41).

 

 

 

Missing replies to

The system you

Set the scanner to

conversations.

are trying to track

receive Type I

 

is a Type I sys-

trunked frequen-

 

tem, and the

cies. See “Scan-

 

scanner is set to

ning Type I and

 

scan Type II sys-

Hybrid Trunked

 

tems.

Systems” on

 

 

Page 50.

 

 

 

 

The selected

Try another preset

 

fleet map is incor-

fleet map or pro-

 

rect.

gram your own

 

 

fleet map (see

 

 

“Scanning Type I

 

 

and Hybrid

 

 

Trunked Sys-

 

 

tems” on

 

 

Page 50).

 

 

 

Missing replies to

Not all of the

Enter all of the

conversations

trunk’s frequen-

trunk’s frequen-

(continued)

cies have been

cies (see “Storing

 

entered.

Trunked Frequen-

 

 

cies” on Page 41).

 

 

 

65

Page 65
Image 65
Radio Shack PRO-91 owner manual Adjust squelch for

PRO-91 specifications

The Radio Shack PRO-91 is a handheld scanner that appeals to both amateur radio enthusiasts and professionals seeking a reliable and versatile communication device. Known for its user-friendly design and wide range of features, the PRO-91 is an excellent choice for monitoring various frequencies, including VHF and UHF bands.

One of the standout features of the PRO-91 is its capability to scan frequencies in the 25-1300 MHz range, which allows users to listen in on a variety of communications. This includes police, fire, and emergency services, as well as amateur radio transmissions and aircraft communications. The scanner supports both analog and some digital formats, making it adaptable to different communication standards and ensuring users stay updated with relevant broadcasts.

The PRO-91 comes with 200 programmable channels, allowing users to store their favorite frequencies for quick access. It also features a million frequency search capability, enabling it to detect active signals within the scanning range. Additionally, the scanner includes a priority channel function, permitting users to designate a specific frequency to continuously monitor while scanning through other channels.

Another notable characteristic of the PRO-91 is its triple conversion design, which enhances sensitivity and selectivity, resulting in improved audio clarity and reduced interference. The unit is equipped with a robust speaker that delivers clear sound quality, making it easy to understand transmissions even in noisy environments.

Users will appreciate the ergonomic design of the PRO-91, which features intuitive controls and a backlit LCD display for easy visibility, even in low-light conditions. The keypad layout is designed for straightforward operation, allowing even novice users to navigate through menus and settings with ease.

The PRO-91 is powered by a rechargeable battery, offering extended usage without the need for constant battery replacements. Its compact and lightweight construction makes it portable, making it suitable for on-the-go monitoring.

In conclusion, the Radio Shack PRO-91 offers an impressive array of features, technologies, and characteristics that cater to diverse scanning needs. With its wide frequency range, programmable channels, and superior audio quality, it stands out as a reliable choice for anyone looking to explore the world of radio communication. Whether for recreational use or professional monitoring, the PRO-91 ensures users remain connected to the signals that matter most.