Small Aircraft
Flight Crew Multiengine; Flight Crew Private; Flight Crew Instrument
Flight Crew Last 90 Days 62; Flight Crew Total 3960; Flight Crew Type 770
Communication Breakdown
ATC Issue All Types
General None Reported / Taken
ATC Equipment / Nav Facility / Buildings
I was on Jacksonville Center on flight to Tupelo; MS. I wondered why I had not been handed off when Garmin G1000 moving map displayed we had entered airspace for Atlanta Center. [I] called repeatedly on the Jacksonville Center frequency with no response. [I] looked up frequency on Garmin for ATC - which listed Atlanta Center on 120.45. Called 120.45 and while talking to a Controller on that frequency heard a call on the Number 2 radio on Guard (121.5) to call Atlanta Center on 125.5; which I then did. Problem is poor radio reception on Jacksonville Center frequencies. I suspect they had been calling me to have me change frequencies to another Controller; but I could not hear them by the time they called. [I] had same problem 3 days later on return flight in same 100 - 150 mile area of flight: Jacksonville Center was not readable except with squelch turned up high at certain times (as I was prepared this time for the problem). Solution:  Get more transmitters or towers for Jax Center in Southwestern Georgia.
General Aviation pilot described multiple contact attempts with ZJX. The reporter suggested more ATC radio equipment be installed in Southwestern Georgia.