rfxcom and kaku multiple send commands

I have the rfxcom usb adapter and several kaku receivers.
What i see is that not always the receiver gets te on/off command received.
Probably because of interference. Is it somehow possible to have the on/off code send a number of times?
Would be nice to have such an option in the rfxcom plugin.

As far as I know kaku commands are always send multiple (7?) times . This is standard kaku. They hope to catch at least one of the commands. Sounds silly, but most of the time it works.