SMA X CTLED FLT TOWARD RADIO ANTENNA. EVASIVE ACTION CLB TAKEN. SEE AND AVOID CONCEPT.

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SMA X RECEIVED A CLRNC ON THE GND AT MCI TO DEPART THE AIRSPACE. THAT CLRNC CONTAINED AN ALT OF 2500 FT MSL. AS I PULLED OUT ON THE RWY TO HOLD; I RECEIVED INSTRUCTIONS FROM THE TWR TO DEPART AT 1500 FT MSL. I DID SO. A FEW MINS LATER I WAS DEPARTING THE LOWEST LEVEL OF THE CLASS B AIRSPACE DIRECTLY E OF THE N END OF RWY 1L. AS I ENTERED UNCTLED AIRSPACE; DEP VECTORED ME TO 140 DEGS (OR 130 DEGS). AS I BEGAN THE TURN; I NOTICED TWRS STANDING AT 1336 FT MSL WERE GOING TO BE IN MY FLT PATH. LOOKING AT 1/4 TO 1/2 NM FARTHER I SAW THE CONGESTED AREA OF NASHUA WAS ALSO IN MY FLT PATH. I MADE AN ATTEMPT TO CONTACT DEP. I WAS IGNORED DUE TO OTHER TFC. AS I CROSSED OVER THE TWRS APPROX 164 FT ABOVE THEIR TOPS I BEGAN A CLB TO 1800 FT MSL. I MADE THIS DECISION BASED UPON TWRS AND THE TOWN THAT ALSO WAS IN MY FLT PATH; AND FAR PART 91.119(B)P(C); AND THE FACT I HAVE VISITED CTR AND WAS TOLD ACFT ARE ALLOWED A 300 FT DEV PRIOR TO ACKNOWLEDGEMENT. DURING THIS TIME A PLT MADE AN ATTEMPT TO CONTACT DEP AMONG THE RADIO TFC AND WAS ANSWERED WITH 'I'M TOO BUSY NOW' FROM CTR. AS I DEPARTED THE AIRSPACE OVER THE TOWN; I BEGAN TO DSND BACK TO 1500 FT MSL. AT THAT TIME DEP CANCELED RADAR CONTACT.