Codan-radio Radio Repeater Systems Training Guide Instrukcja Użytkownika Pobierz pdf (Strona 18)

TRAINING GUIDE | RADIO REPEATER SYSTEM

Chapter 2: Repeater System Conﬁ gurationsPage 10

A more efﬁ cient use of the two frequencies would be a talk-around repeater (or 2T1R) as shown in Figure 2-2. This system

uses 2 channel positions on the mobiles, portables and base station equipment.

Figure 2-2: Talk-Around Repeater

Two advantages of this system are:

i) While two ﬁ eld mobiles (or portables) are working (talking to) and monitoring (listening to) each

other on channel 2, an outside call (from the ofﬁ ce or mobile or another location) via the repeater

will still be received.

ii) The repeater is not operating (“on the air”) for all conversations thus reducing possibilities for

interference and battery drain at the repeater site.

Repeater

From other

locations

Portables Ch.1: Tx-F1 Rx-F2 Through repeater

Ch.2: Tx-F2 Rx-F2 Talk around

Rx-F1

Tx-F2

Portable

Ch.1 & 2

Portable

Ch.1 & 2

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Codan-radio Radio Repeater Systems Training Guide Instrukcja Użytkownika Strona 18