squelch doesn't seem the way to go

[aratti]

If I understood correcly, this should help you:

Flag=0
loop1:
Flag=Flag+1
If flag=>100 then goto Jumpout
SERIN2 serialpinin,16468,100,loop1,[wait(254),a,b,c,d,e,f,g,h,i,j,k,l] 
Jumpout:

When flag count reach 100 * 100 ms = 10 secs. You can vary the total delay changing the 100 to the best value that fit your project.

Al.