Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Is there a gain raiting for various freqs?
Document: This is a great antenna, but there are things you need to know. The listed antenna specs does not include all the specs for what Ham bands this antenna transmits on. According to the actual manufacturer website, this antenna transmits on 50/144/220/440/900/1296 at 200w max. So this is great for 6m/2m/1.5m/70cm standard freqs for hams, but not for HF...unless you have a tuner--and then you have to experiment.
very easy to assemble and works much better then the original radio antenna. I installed it on top of my outside tv mask.
the antenna was as described, stainless. all parts, including mounting brackets were stainless. while assembling it I bumped a long element and the mounting screw which was pressed into the hollow end snapped in half.it was not a hard bump but it still snapped. other than that, reception was good,
Works like a charm. It's almost too good! I receive a lot of Dallas PD transmissions on my Bearcat BCT15x scanner although I live almost a hundred miles from Dallas. The antenna has withstood high winds without any problems. It's mounted somewhat low (12 feet) according to comments I've read, but it works just fine. Trees do provide some protection against high wind and don't seem to interfere with signal strength. Be patient when installing it and you shouldn't have any problems.
While raising the antenna the upper disc elements bumped a tree branch.One element broke off at the connection hub. I had to silver solder it back on.With an AEA antenna analyzer the antenna had a low SWR from 100 Mhz.to beyond 250 Mhz. The SWR rapidly increased below 100 Mhz.The 6 meter (50 Mhz.)
This was a replacement antenna. It really did the job for our base scanner. We get a much clearer signal. Assembly was easy arrived on time. Great product.
Please see link below and click the ST4 option.73s[...]
No more hemorrhoids, this baby did the trick! Use with caution! It also works quite well on my scanner so I would recommend this to others.
Item was delivered quickly, and despite some assembly challenges (entirely the fault of this reviewer for not actually reading the instructions) it went together fairly quickly. A part broke during assembly, and after contacting the manufacturer by email, a no-cost replacement was on my doorstep in a few days.It works, An amazing addition to my scanner setup. I am receiving signals my previous antenna never gave me.
Item is as described, quality is exceptional and performs the as designed, recieve and transmit(optional) for a wide frequency range.
Answer: Gain over a tuned quarterwave should be about 0.  About -1.5db compared with a dipole.  That said, the beauty of this antenna is the low standing wave ratio over a large frequency spread.  I can pick up our airport over the top of a 500' ridge that the indoor antenna doesnt even pick up.  I have received 800 MHz trunked systems out to about 80 miles.  The antenna works very well, and is one of the best you can get for omni-directional coverage.   I am not aware of any omnidirectional antenna with gain over a dipole.  The best thing you can do to increase reception with this antenna is use good quality RG-8 coax, which will have much less loss than the typical RG58 most people use for scanner antennas.