i was talking to a direct lender at a local investors meeting and he mentioned that i can get up to 19 properties under 1 credit using a no ratio loan. i just wanted to get a second opinion on this.

That's a lot of properties. I have heard of companies who buy properties and team up with "FICO buddies" so that only a few mortgages go on a single person's credit at a time... The credit score plummets when so many loans are added to it, so these FICO buddies rotate in and out of use.
--A

The Fannie Mae guideline of properties that one can have at a single given time is 6[?], I think [correct me if I'm wrong]. Anything that is above that number may fall into a private money situation -- these lenders aren't widely known, they're known within an investment circle. These lenders usually/almost always fund on the premise that your properties above 6[?] are held in a portfolio by them. Be aware that the rates and program are tough to swallow but hence the "No Ratio" -- obviously it has to be "No Ratio" because you're having all these montly outgoing debts on the 6[?]+ properties.