Short loft antennas

At the old QTH I had a problem with 160m antennas. At one time, we were going to try a local 160m AM net. Somewhere I have some crystals. My solution was this small loft vertical that worked really well. It can easily be adapted for your situation. I was surprised how good it was.

Although my antenna was on 160m, the same idea (helical windings and a top hat) could be used on other bands like 80m, 60m, 40m, or even 630m.

See https://sites.google.com/site/g3xbmqrp3/antennas/160m_loft_ant.