/diy/ - Do It Yourself

So /ohm/ I'm a EE student with very little experience in electronic (1st semester) and I'm trying to build a radio with a tin foil variable capacitor I've made. The problem is I can't use 500000000 km of antenna nor I have the skill to make a super-het circuit. And even with a gigantic antenna teh signal will still be piss weak. I want to make an pre-amplifier before the tuning circuit and for the sake of simplicity the plan is to use an op-amp (Or in worst case scenario discrete transistors). Now the question is, what op-amp model should I use? The plan is to hear medium waves (530 kHz to 1700 kHz here) and a normal opamp would shit itself in that frequency.