help with UNID

[pinto vortando]

MB was booming in here this morning.  On 280 heard what sounded like 4TR with no DAID.  Various sources show 4B and 4T both on that freq and both in MB.   
No doubt about the 4 but my guess is perhaps it was 4B with the B miskeyed  as TR.  Then again maybe 4T with a messed up T. 
Anybody else log this one recently?  tnx.

[jFarley]

4T was booming in this AM.  It has a very short DAID, and has been reported as sounding like "4TT" from time to time.

I did not see 4B this AM.  It has no DAID, but has currently been keying as something which sounds like "4TS".

This should clear things up!   

[pinto vortando]

4T was booming in this AM.  It has a very short DAID, and has been reported as sounding like "4TT" from time to time.

I did not see 4B this AM.  It has no DAID, but has currently been keying as something which sounds like "4TS".

This should clear things up!   

OK, tnx, based on that going to tentatively go with 4B as the R was stuttering, could be an S.   
Both in MB and both on the same freq but 300 miles apart so probably only a problem for NDB chasers.