Uniden UH-057 manual Other SELCALLParameters, MSec

Other SELCALLParameters.

Aside from the Transmitter and Receiver ID, you should also know some of the SELCALL Parameters. Though, this parameters are not frequently changed understanding them will probably help you on your future use.

Tone Period

Tone Period is the duration of one tone in a SELCALL ID sequence. The setting of this parameter depends on your application. On long distance communication for example, where the signal strength of the transmitted information is greatly reduced and affected by noise, it is more advisable

to use longer Tone Period. Long Tone Period gives the decoder more time and information to check and evaluate

the code.

However, BE SURE THAT ALL RADIOS IN YOUR GROUP USES THE SAME TONE PERIOD SETTING. Otherwise

you will not be able to selectively call one another.

Sundowner UH-057 allows you to select which tone period is best for you. It offers the four most commonly used tone period setting (20, 40, 70 or 100 mSec). Giving you the freedom to change this parameter, you can adapt easily to the existing system in your group without the inconvenience of having it serviced by the dealer.

To change the tone period setting,

1. Press the @ for about 1.5 seconds. The LCD displays:

[ P-]

2.Select your chosen Tone Period setting from the table below.

Key	LCD Display	Tone Period
0	PO	20 mSec
1	P1	40 mSec
2	P2	70 mSec
3	P3	100 mSec

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