Hello, I am new to HAM and I am looking for a good antenna. I live in an apartment building on the third floor, which is the top floor. Unfortunately I do not have access to hang anything outside and have no balcony access. I am looking for an antenna that I can put in my window on the inside of my apartment. I will be using the antenna for the 2 meter and 70 cm band for mostly listening and maybe some talking from time to time on my local repeaters. I am new to HAM so I think that building an antenna myself would be a good learning experience for me, but I am also open to purchasing one too. If I missed any needed information to help answer my question please ask. Thank you in advanced for your responses!