* Q2 adj loss/shr $0.03 vs est loss/shr $0.10
* Q2 rev down 12 pct at $139.9 mln
* Sees Q3 rev $150-$155 mln
* Sees Q3 EPS $0.03-$0.05
* U.S.-listed shares up 9 pct in extended trading
Aug 4 (Reuters) - Canada's Sierra Wireless reported a narrower-than-expected quarterly loss, and said it expects third-quarter revenue to improve as it launches new products for Canada's expanding 4G network.
U.S.-listed shares of the Vancouver-based company were up 9 percent in extended trading. They closed at $8.98 on Thursday on Nasdaq.
For the third quarter, Sierra, which makes mobile modems, expects revenue of $150-$155 million and earnings of 3-5 cents a share.
Analysts on average were expecting earnings of 15 cents per share on revenue of $169.3 million, according to Thomson Reuters I/B/E/S.
Second quarter net loss was $6.8 million, or 22 cents per share, compared with $8.6 million, or 28 cents per share, a year ago. On an adjusted basis, the net loss was 3 cents a share.
Revenue fell 12 percent to $139.9 million. Sierra said the revenue decline was mainly due to the loss of business from Barnes & Noble and Clearwire Corp .
For the quarter, analysts had expected a loss of 10 cents per share on revenue of $142.5 million. (Reporting by Abhiram Nandakumar in Bangalore; Editing by Maju Samuel)