R90 controller voiced concern regarding the radio coverage at cbf; suggesting that rtr frequency equ...

Narrative:

The pilot called for an IFR clearance while on the ground at cbf. The frequency used was 124.5; which is a problem for aircraft on the ground. Sometimes we can hear the aircraft; and sometimes we cannot or lose them partially thru the clearance. The aircraft was given a clearance with a hold for release instruction. We did not initially receive a response. The controller then asked if the aircraft copied; and when they un-keyed; they had blocked part of the transmission from the pilot; which only included an altitude read back and was asking about the transponder code. Controller then tried to verify more information twice and did not receive a response. On the third try the pilot stated that they copied and that they were airborne. No separation was lost; but aircraft departed unexpectedly. We never had a good read back from the pilot and never heard the aircraft reply back with hold for release nor was the aircraft released for IFR departure. There needs to be an rtr frequency on the ground at cbf. This is a very busy uncontrolled airport 6 miles from oma; and 1 mile from the surface area; and underneath the class C airspace. This happens on a daily basis; we lose contact with aircraft on the ground. This time it was not a safety situation; but there is a definite possibility of it being one.

Original NASA ASRS Text

Title: R90 Controller voiced concern regarding the radio coverage at CBF; suggesting that RTR frequency equipment be installed at CBF; a busy non-towered airport.

Narrative: The pilot called for an IFR clearance while on the ground at CBF. The frequency used was 124.5; which is a problem for aircraft on the ground. Sometimes we can hear the aircraft; and sometimes we cannot or lose them partially thru the clearance. The aircraft was given a clearance with a hold for release instruction. We did not initially receive a response. The Controller then asked if the aircraft copied; and when they un-keyed; they had blocked part of the transmission from the pilot; which only included an altitude read back and was asking about the transponder code. Controller then tried to verify more information twice and did not receive a response. On the third try the pilot stated that they copied and that they were airborne. No separation was lost; but aircraft departed unexpectedly. We never had a good read back from the pilot and never heard the aircraft reply back with hold for release nor was the aircraft released for IFR departure. There needs to be an RTR frequency on the ground at CBF. This is a very busy uncontrolled airport 6 miles from OMA; and 1 mile from the surface area; and underneath the Class C airspace. This happens on a daily basis; we lose contact with aircraft on the ground. This time it was not a safety situation; but there is a definite possibility of it being one.

Data retrieved from NASA's ASRS site 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.

Attributes
ACN	1151298
Time
Date	201402
Local Time Of Day	1801-2400
Place
Locale Reference	CBF.Airport
State Reference	NE
Aircraft 1
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
Flight Phase	Climb
Route In Use	None
Flight Plan	IFR
Person 1
Function	Supervisor / CIC
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types

R90 controller voiced concern regarding the radio coverage at cbf; suggesting that rtr frequency equipment be installed at cbf; a busy non-towered airport.