Ron,

Mosley rates their antennas in DBi. Sommer rated their antennas against a
dipole so I assume DBd. The big Sommer is a fine antenna in the XP70x and
XP80x config. The smaller XP50x is much closer to the TA-33. Back in the
early 90's Lew McCoy reviewed the small sommer in CQ Magazine. N4VZ (now
W7UT) used his to work almost anyone he wanted until he moved to Utah. KM1E
wrote a two part article in DX Magazine in 1995 on selected and installing
the XP807 (big version). You might get reprints from N4AA who now
publishes DX Magazine. I was on 17 when KM1E was testing his Sommer against
a 4 el wide spaced beam at KA1PE. With FK8CP he was 56 compared to KA1PE 57
(FK8CP gives low reports HI). Later he was as strong on a European QSO. I
would drop KM1E a note to see if he is still happy.

The Sommer is not a true Yagi but a log periodic or really a skip log using
a combination of half wave, three quarters, and full wavelength elements
phased on each band. If you get the 30 or 40 meter elements its a short
loaded element with inefficient directors that seem to work as well or
better than a full size dipole at the same height.

The Sommer is a difficult antenna to put together and install compared to
the TA-33. It is extremely rugged and will last forever.

Good luck with any decision. Alternatives include the new 3 and 4 el
SteppIR , the TH11, and perhaps the Big Bencher. If you like Mosley Van
W4GIW in South Carolina may be selling his Pro 57 Mosley and going to big
Monobaders.

73 Dave K4JRB
Ronald Walters wrote in message
...
Who is using a Sommer multi band antenna out there? What's the real scope
on this antenna? Your comments

Using a TA33 now. Mosley rates their antennas in DBd while Sommer in DBi
so it looks like the claimed gain is about equal.

Appreciate any comments

Ron - W4LDE