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- PRO2004.4
- Part 1/4
- The Radio Shack PRO-2004
- Programmable Scanner
-
- (c)1987 - Bob Parnass, AJ9S
-
- Manufactured in Japan, by General Research Electronics,
- the Radio Shack PRO-2004 is a 300 channel, wide
- coverage scanner radio, incorporating NBFM, WBFM, and
- AM modes.
-
- Although the catalog description doesn't do the radio
- justice, the microprocessor circuitry provides features
- not found in other scanners.
-
- This review, although admittedly subjective, focuses on
- three broad characteristics: feature set, basic elec-
- trical performance, and mechanical construction.
-
-
- Frequency Coverage
-
- The PRO-2004 literature states that coverage is from
- 25-520 and 760-1300 MHz. Radio Shack's last minute
- decision to remove cellular telephone frequency
- coverage from the PRO-2004 caused a 7 week delay in its
- introduction. A small card is now packed with each
- scanner, informing the buyer that the radio will not
- operate in the 825-845 and 870-890 MHz ranges.
-
- A matrix of diodes, attached to the microprocessor's
- input port, is often used to configure radios for sale
- in different markets. From recent flux on the circuit
- board, it appears that a diode has been added or remo-
- ved from my PRO-2004, and this may be how the cellular
- telephone coverage was yanked.
-
-
- Lots of Memory
-
- The PRO-2004 has the usual features that scanner buffs
- have come to expect: individual channel lockouts,
- selectable rescan delay, an external speaker jack, etc.
- But, the 300 channel capacity of the PRO-2004 sets an
- industry record! Casual scanner users may scoff at the
- usefulness of having so many channels, but seasoned
- monitorists can have those channels filled up in no
- time flat, especially with frequencies in the vast
- 225-400 MHz military air band.
-
- With so many channels to program, one dreads the
- thought of a power failure, which could clear memory in
- a hurry. Not to worry, the PRO-2004 memory is backed
- up by a conventional 9 volt alkaline battery (not sup-
- plied). The 300 channels are divided into 10 banks of
- 30 channels each, and one can select or deselect any
- channel bank from the scan list. Individual channels
- can be locked out in the customary way, but the PRO-
- 2004 provides a new feature, a LOCKOUT REVIEW. Succes-
- sive depressions of this key step through the locked
- out channels.
-
- The owner's manual refers to the ability to delete a
- channel by storing a 0 frequency in it, not a particu-
- larly useful exercise. The scanner will still spend
- time scanning a "deleted" channel unless it is locked
- out with the LOCKOUT key, which then means it appears
- in the lockout list when using the LOCKOUT REVIEW
- feature.
-
- Scanners worth their keep have a priority feature, with
- channel 1 usually designated the priority channel. The
- PRO-2004 is more flexible; any of the 300 channels may
- be designated the priority channel. When the PRIORITY
- key is depressed, that channel will be sampled every 2
- seconds, and the radio will stay there if a signal is
- heard.
-
- The PRO-2004 has two scan speeds, although one would
- probably use the faster, 16 channel/second speed in
- most instances. This compares favorably with 14
- channel/second speed of the Bearcat 800XLT.
-
- When programming a channel, the PRO-2004 firmware sets
- the mode automatically, based on its idea of what mode
- is most prevalent on that frequency. This feature
- saves extra keystrokes, and makes one appreciate the
- thought that went into the design of this radio. The
- default mode can be overridden easily, if need be, like
- to listen to a NBFM satellite in the 225-400 MHz range,
- which is mainly populated with AM signals.