My sincerest condolences. My father, K5LDH, passed away in 2006. I still miss him terribly. I became a ham before him but it was the ham section his Popular Electronics magazines that propelled me.
I sagged a for about six months after he passed. I bounced back with the help of other amateurs. May your dad's memory be a blessing.
Semper Fi,
Tommy - K6YE
DX IS and CW RULES