Batboard

I have programmed two UHF SM50's to the same simplex frequencies and they communicate to each other no problem. My problem is when I program in TPL codes they still talk to each other but the squelch opens up on both to a hand held, same freq, with no TPL code. So I tried programming one sm50 with a TPL code and the other none. The SM with the TPL code still opens up, when receiving to the other radio with no TPL code. Am i missing something in the programming stage? I thought the TPL code would block open frequencies form opening the squelch. Any ideas?
Thankyou

It sounds as if your radios are set for TPL transmit only with the receivers operating in CSQ at all times.

Is that a programming issue or hardware?
Thanks