If you can only have an indoor antenna, this is possible by using loop antennas. You can make a half wave circular dipole from 10mm copper pipe on a 40mm plastic waste pipe from hardware shop. It has the advantage of being able to turn it to peak signal reception and null out noise. You can feed it directly at the bottom, or use a 1/5th size loop to inductively feed it. It can be tuned by adjusting the gap at the top of the loop. The diameter required is approx 1.6m, calculate the lengths needed using a standard dipole calculator say for 28Mhz. The half wave loop is a compact, efficient and noise resistant antenna, and it is surprisingly effective low down, use highest room in house and position at largest window. You will need to borrow a SWR analyser to help tune and trim it, do this outside first in the clear before trying to get it right inside.
Then as suggested above hide it outside high up in a leafy tree
You can make a stealth half wave vertical antenna with a piece of black wire and a matching transformer wound on a piece of plastic pipe. If you take the bottom off a junked silver rod, you can see exactly how it's done. 1:8 turn air cored transformer. Instead of RG58 - use thin coax instead, RG-178. Super thin, easily hidden.
