ets960

yeah, I was thinking a common emitter amplifier... I was trying to find a good op-amp that'd have the bandwidth, but I probably don't need that much gain... What about filters? Do you think I need some? Somebody else recommended RF Circulators to me, but that seems really expensive...

Audioguru- I like your idea, and I think I will start with it. However, I still like the idea of making a repeater, and I don't think it would be very difficult... I'm gonna need an amplifier (op-amp) that has a very high bandwidth (no attenuation at 850 Mhz). Then I can create a couple active filters to filter out the unwanted frequencies. Any ideas about this? Thanks.

So I've been thinking about trying to build a cellular phone repeater to use inside a home (my girlfriend's basement) because she gets good signal outside, but bad signal inside. I'm thinking its as simple as having a couple good antennas (one for outside, one for inside), band pass filters, and a gain stage or two. The frequencies i need are around 850 Mhz, and possibly the 1900 Mhz range. Has anybody tried this? They sell them for around 500 bucks. I think I have the right idea about this, but am I missing something? Let me know what you guys think.