UPDATE 1-ProSieben outlook vague, wary on ad market growth

* Gives no outlook

* Core profit below market estimates

* Net debt stood at 3.54 bln eur end-September

* Shares indicated 6.9 pct lower in pre-market trade

(adds detail, background)

BONN, Nov 5 (Reuters) - German commercial broadcaster ProSiebenSat.1 Media AG (PSMG_p.DE: Quote, Profile, Research) remained vague on targets for the full year after it reported a third-quarter core profit that missed expectations.

ProSieben said on Thursday it saw increasing signs of economic stabilisation but would stay conservative in its planning because the market environment remained difficult.

Chief Executive Thomas Ebeling said last week he was seeing a recovery in the German TV advertising market in the fourth quarter but that it was uncertain how the German ad market would develop in 2010.