Kraemer Radio / Satnav

I have just installed a Kraemer Radio / SatNav in my 1994 XJS.
All works well except the only way I can get Sat Nav is to first turn on the radio then chose Nav button.
By doing this though the radio aerial is automatically extended.
Any ideas?

I am planning to put in a small switch somewhere to interrupt the power antenna feed. I am usually on bluetooth, no point in having the antenna up. If I want the antenna up I just turn the switch on and restore the original connection. You might consider similar solution.

Hi Bob,

Yes that will be my actions also. I was hoping I had missed or miswired something that controlled the aerial.

Haydn E Ebbs