I have been using Motorola T4503 walkie talkie (3km range) when out shopping with my buddies. In general, they work well in most part of Singapore. Even on the SMRT train platform, as in from one end to the other end of the platform.
However, when we board the same train, first and last carriage, the walkie talkie set would not be able to establish the radio link. Do not think it is an issue with the range, since the moment both of us step out of the train carriage, radio link is reestablished.
We had tried using other more powerful walkie talkie sets with the same results.
Anyone had this experience or know what is the cause ?
Please advise. Thanks.