Redpower 2 needing help

[Prringa]

Hi guys,

 

I hope somebody can help me.

I'm playing Tekkit Lite and I need some help with redpower.

What I want to do:

 

I want to build something like a clock. I want a redstone signal which is active for about 5-10 seconds (can be also a bit more, must not be exact) which is toggled all 5 minutes.

 

So easily explained: how to build a clock which activates all 5 minutes and sends a 5-10 second active redstone signal.

 

I've also tried it with the timer but the redstone signal which it gives out only is like half a second long.

Ty so much!