Antenna length?

[Darren Wales]

Just put an Etronix Pulse EX3G 2.4 into my B4.1 and on testing it, I found that the range was much less than my previous RTR wheel Associated receiver.
The range is only about 50metres

May seem an obvious one this, but the receiver wire is much shorter on the Etronix. Is this normal? has it been shortened? or am I doing something wrong?

Bought the item of here as NIB.

many thanks in advance

Darren