Narrative:

I had called FSS to file a VFR flight plan. I filed my plan and got a standard WX briefing. The report stated that den was IMC and he advised to delay departure by 45 mins as it was looking to clear. We discussed filing IFR but I decided to stay VFR and delay departure. I taxied onto runway 10 and took off. At 900 ft we encountered IMC conditions. I deviated 45 degrees to the northeast to remain VFR. After approximately 2-3 mins I had to turn/deviate north to get out and above the cloud layer. At that time I contacted FSS. I mistook the frequency for departure. I called 3 times and I finally got a response asking to confirm if I was calling departure or FSS. At this point I had already climbed to 7500 ft and was flying direct to my initial navigation fix. My intentions were to file IFR immediately as I knew my VFR flight path would put me into a dangerous area. As my 3RD radio call was finally answered I asked for IFR clearance and was directed to departure frequency. By the time I got to departure I had violated class B of den. We were flying over layers so the ground was not visible. Once I realized my location, I immediately called on the radio to report my location and to get clearance so that no one would perceive me as a threat. It was at this time I reported to ATC I was in the wrong place. The problem arose because I mistook the radio frequency I was on and what I could/could not do through FSS. I was making sure I stayed in VFR conditions during climb out and I did not think why my radio calls were not being answered.

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Original NASA ASRS Text

Title: BE35 PLT VIOLATES DEN CLASS B AIRSPACE DUE TO COM DIFFICULTIES AND WX AVOIDANCE.

Narrative: I HAD CALLED FSS TO FILE A VFR FLT PLAN. I FILED MY PLAN AND GOT A STANDARD WX BRIEFING. THE RPT STATED THAT DEN WAS IMC AND HE ADVISED TO DELAY DEP BY 45 MINS AS IT WAS LOOKING TO CLR. WE DISCUSSED FILING IFR BUT I DECIDED TO STAY VFR AND DELAY DEP. I TAXIED ONTO RWY 10 AND TOOK OFF. AT 900 FT WE ENCOUNTERED IMC CONDITIONS. I DEVIATED 45 DEGS TO THE NE TO REMAIN VFR. AFTER APPROX 2-3 MINS I HAD TO TURN/DEVIATE N TO GET OUT AND ABOVE THE CLOUD LAYER. AT THAT TIME I CONTACTED FSS. I MISTOOK THE FREQ FOR DEP. I CALLED 3 TIMES AND I FINALLY GOT A RESPONSE ASKING TO CONFIRM IF I WAS CALLING DEP OR FSS. AT THIS POINT I HAD ALREADY CLBED TO 7500 FT AND WAS FLYING DIRECT TO MY INITIAL NAV FIX. MY INTENTIONS WERE TO FILE IFR IMMEDIATELY AS I KNEW MY VFR FLT PATH WOULD PUT ME INTO A DANGEROUS AREA. AS MY 3RD RADIO CALL WAS FINALLY ANSWERED I ASKED FOR IFR CLRNC AND WAS DIRECTED TO DEP FREQ. BY THE TIME I GOT TO DEP I HAD VIOLATED CLASS B OF DEN. WE WERE FLYING OVER LAYERS SO THE GND WAS NOT VISIBLE. ONCE I REALIZED MY LOCATION, I IMMEDIATELY CALLED ON THE RADIO TO RPT MY LOCATION AND TO GET CLRNC SO THAT NO ONE WOULD PERCEIVE ME AS A THREAT. IT WAS AT THIS TIME I RPTED TO ATC I WAS IN THE WRONG PLACE. THE PROB AROSE BECAUSE I MISTOOK THE RADIO FREQ I WAS ON AND WHAT I COULD/COULD NOT DO THROUGH FSS. I WAS MAKING SURE I STAYED IN VFR CONDITIONS DURING CLBOUT AND I DID NOT THINK WHY MY RADIO CALLS WERE NOT BEING ANSWERED.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.