Hi there,
I’m looking at purchasing a BLADERF and I notice it doesn’t come with any antennas. I’d like it to be able to see the whole spectrum from approx 50MHz to 5GHz. What would be the best choice of antennas for the BLADERF to achieve that?
Thanks! 
Thanks for posting your question Carolyn!
50MHz to 5GHz is a huge range and I’m not sure anyone make an antenna that covers all that bandwidth. I could be wrong, but you may find yourself needing to switch between multiple antennas as you progress upward in frequency. At the very least, you will get better performance with a narrower bandwidth antenna than a wide band one.
If anyone has an antenna recommendation, please reply.
Log periodic and discone antennas are pretty wideband but, like Chris says, the huge range is going to make it difficult to get full performance out of the receiver, no matter what the antenna spec sheet says. Even 500MHz to 5GHz is pushing it.