surface armor, there's a hulking great metal framework. Consequently,
sandwiching the antenna between the armour and the frame is going to
lead to unacceptable loss of radiated energy, I'd have thought. Unless
anyone knows differently..
I do not know the frequencies, but if they are high enough, one could think
of a slot or a patch antenna

Is there anything in the rules forbidding your installing a jammer
If jamming would be allowed, it would be a totally different sport (but
interesting as well). In that case you may as well omit the robots See all
the military history about ECM, ECCM, ECCCM (Electronic Counter(*n)
Measures) etc.

Wim