Antenna- How to buy?

How to buy fitting antenna? I saw on which states 430Mhz. Locally I am using 477, does it meant that antenna would not serve the frequency I wanted to lock in?

I’m confused - Do you want this antenna for transmit or receive?

The typical way to use a transmit antenna is to physically cut it for one frequency.

Reciprocity says that any antenna that will receive will also transmit on the same frequency.