The CA2X4SR is a very nice antenna, but it doesn't qualify as a universal 'cure all' quite yet. It does have a couple'a 'faults' but nothing that isn't 'curable'.
It uses 'set-screws' and like anything that does, and that's subject to vibrations, they can work loose. So, make sure they haven't worked loose by checking them and re-tightening them when necessary.
They are not the most flexible antenna around! That's not always a 'fault' but you do have to be aware of it's stiffness and 'compensate' for it.
They only come in black, no designer-colors...rats!
They are purposely very 'broad banded', which means that they are fairly low 'Q', which isn't really a 'fault', but it isn't "gain packed" you know? (Yes, it does have reasonable gain.)
And they aren't rated for 40Kilowatts! Now THAT's a real disappointment, ain't it??
I have one in use and a 'spare'. I had a problem which I thought was with the original CA2X4SR I had so replaced it. Turns out it wasn't the antenna at all so I gotta spare. I use it on an HT, believe that or not. No, I wouldn't recommend it for that but with the proper adapter, and a 'rat-tail', it does just dandy on my front porch (when the temperature is above 65 degrees 'F'! I think it does good when it's cooler than that, but I don't).
- 'Doc
(If you are looking strictly for a 465 Mhz antenna, the CA2X4SR will work, but it's a bit of 'over-kill'.)