Theben TRA 69 HF Manuel D'utilisation page 21

Manuale_TRA69HF
Suggested solutions
1. Replace the battery or make sure the battery is inserted
correctly.
2. Insert a new battery.
1. Make sure their codes are identical.
2. Make sure it is within effective range.
3. Make sure no other products with the same codes and
frequency affect the reception and transmission of com-
bining receiver and transmitter.
4. Make sure antenna is pull out completely.
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