A question about HT rubber antennas

[iz1mgz]

Perhaps I should open this thread in the Antenna sections......because my doubts are principally about che Maldol SMA 209 V/U antenna.
I own it in both bnc and sma version and the bnc performs quite well for this kind of antenna but the sma one has poor performances in uhf.

The bnc version is advertised ad 144/430mhz range antenna but on the sma blister is written 146/446mhz.
I don't remeber the whole world bandplan but in my country the ham freq in this range are 144-146mhz and 430-438mhz, so the 446mhz seems to be for another coutry rules.
My question is: is possible that different brand antennas with the same product code are tuned for different frequencies?
I tried to measure the ros but with these antennas is difficult to obtain accurate results probably because they work at best when mounted to the HT and the HT is Hand held

 

[Robb]

One would think that in order to avoid this kind of confusion, that the product code for an antenna with a different freq tuning would be different; not the same.

 

[Moleculo]

So many of these HT antenna brands copy each other that's it's impossible to tell if same model numbers from different brands are actually made the same. Add to the mix all of the Chinese knock-offs and you can get very random results when trying to compare them.

 

[iz1mgz]

I am writing about the Maldol MH-209 sma version, advertised in many shops as 144/430 antenna but the in the one I got is written 146/446