Radio Transiever antenna APC220

I have some students considering using the APC220 to transmit sensor data and the project space is very limited- would they be able to use a smaller antenna e.g. a wire and still get data sent. The receiver will be able to use the default antenna or larger. Any ideas, thought appreciated. Many thanks.

Any wire will work, but unless chosen carefully (1/4 wave is 17 cm) the range will be greatly shortened.