Radio Shack Pro-92 Bedienungsanleitung PDF herunterladen (Seite 3)

PAGE 3 -- PRO-97 EDACS PROGRAMMING

PART G. EDACS FREQUENTLY ASKED QUESTIONS

Here is some important information regarding EDACS systems.

1. Ericsson system frequencies are arranged in a Logical Channel Number (LCN) order at each repeater location. What this

means is that each system has its own set of frequencies per repeater arranged in a certain order. You must program

your scanner in the LCN order given. Otherwise, your scanner may not trunk track properly.

2. Not all areas in the same district transmit on the same frequency. What this means is that each repeater covers a specific

area on different frequencies. As you move into a different repeater area in the same district or even a different district, a

stronger repeater covering that area will broadcast the same information, but on another frequency.

3. On EDACS capable scanners, only ONE EDACS system may be programmed in each bank. Programming multiple

EDACS systems will confuse the scanner because:

a. The scanner can only monitor one control channel at a time.

b. The control channel you're listening to is associated with a particular LCN order.

c. Each channel has its own LCN order, the scanner will not know which LCN to switch to.

4. The Pro-97 EDACS talkgroups are in decimal format as opposed to the Agency-Fleet-Subfleet (AFS) format found on

many Uniden and other Radio Shack scanners. Talkgroup conversion tables can be found at http://gtrac.ztn.net.

5. All EDACS programming of LCN Channel 1 begins in Channel x01 of a Bank "X".

6. The control channel must NOT be locked out.

7. The scanner must be able to lock onto the control channel in order to trunk track properly Trunked systems rely on the

control channel to find the correct data for the radio system you're monitoring. When you lose reception of the control

channel, the scanner loses the ability to track the system properly.

8. It is okay to program conventional frequencies in an EDACS trunking bank, but be sure that you DO NOT disturb the LCN

order or otherwise program the scanner out of LCN order. Mixing a different type of trunking system with an EDACS

system may cause your scanner to track improperly.

PART H. PRO-97 ADDENDUM

Things you should know about the Pro-97 and EDACS systems…

It is easy to determine the LCN order of the control channel - manually tune to a control channel, and if you're in manual mode, the

display will show CTL-xx when the system is not busy. If it reads CTL-01, the frequency belongs to LCN #1 of that particular

system.

However, DETERMINING THE OVERALL LCN ORDER OF AN EDACS SYSTEM ON THE PRO-97 IS VERY DIFFICULT --

especially if there are a lot of frequencies in use for a single system (large systems can have up to 25 or so voice channels on top of

the control channel).

If the display shows CTL-02 or CTL-03, the control channel is on LCN-2 or 3, respectively.

If a user keys their radio, the display will change from CTL-01 to 1043. The format is no longer LCN-Talkgroup, but simply the

talkgroup. Earlier radios like the Pro-92 (v1.00) for example, used to show this information as 02-1043, indicating LCN #2, TG 1043.

It makes it easy to figure out what frequency belongs to what slot just by listening and taking careful notes…BUT…

The Pro-97 DOES NOT DO THIS. If you do not have system information available, you'll need to get an older scanner, or determine

the system order the old fashioned way using a second 800 MHz scanner, noting down active frequencies, and shuffling frequencies

around until the correct order is determined.

Note that due to the prevalence of EDACS system and availability of EDACS-capable scanner over the last couple of years, system

information should be readily available from various scanning sources specific to the area that you're monitoring. Good luck!

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Radio Shack Pro-92 Bedienungsanleitung Seite 3