Can I get a line of credit for Investment Properties?

[Shaun Hood]

My wife and I own 3 properties, two of which are rental properties.  We are very new to real estate investing, but off to a good start.  We recently turned our primary residence into a rental, and have about $100k in equity in that property.  We bought a new primary residence where we have very little equity.  I've been told that I cannot get a line of credit on our rental properties-- is this true?  I listen to these podcasts, and it sounds to me that I can definitely get a line of credit on rental properties.  Your experience and insight would be greatly appreciated.  Thank you in advance!