To work 30 meters well, you need an antenna specifically designed to work 30 meters.
If you have a wide range tuner (I use the MFJ 993B), you can tune nearly anything, but that does not mean the antenna will be efficient. I have a 40 meter OCF antenna and I have used it to work a few stations on 30 meters using the tuner, but performance has not been very good.
Buckmaster offers an 8 band OCF antenna that will work 8 bands from 160 meters to 6 meters, but 15 meters, 30 meters and 60 meters are noticeably absent from the list. That is because those bands feed into a high-voltage node on the wire causing high SWR. You can use the antenna on the missing bands with a good tuner, but the efficiency will still be poor due to feedline loss. The only way to get around that would be to operate a tuner remotely at the antenna feedpoint rather than in the shack at the radio.
There are antennas such as the Comet CHA250B vertical that claim to be able to work every HF band, even without radials, but the antenna uses a broadband UNUN to give a decent SWR. Unfortunately, losses in the UNUN and feedline rob a significant portion of the power fed to the antenna. Losses increase at the upper and lower ends of the HF spectrum.
One of these days, I may try building an OCF antenna cut for 30 meters. Although it won't tune perfectly on 15 meters (the two bands are not exact harmonics), it should work a lot better than a OCF cut for 40 meters like I have now.
------ Original Message ------ Received:
01:24 PM CST, 12/22/2014 From:
"Bill Garwood n4gbk@...
RE:  EURAO Party 30M
I spent a lot of time over the weekend calling CQ on 30 meters. Worked 9 stations total, one was PSK63. Not much PSK31 activity but the band did seem to have a lot of digital activity with other modes. One pleasant surprise..called CQ and CN8VX came back with a solid 599 from Morocco. New country for 30 meters.
I would think that 30 meters should be open to somewhere just about all of the time. Not sure why there is not more activity on this band. No antennas?
Date: Mon, 22 Dec 2014 11:08:57 -0500
Subject: Re:  EURAO Party 30M
Good Morning Ted did you actually see any EURAQ stations _ Looked at 30 several timres over the weekend but it seemed mainly dead in NY.