ESAT Digifone has ruled out the possibility of interference with Garda communications as a result of the use of new mobile phone antennae on Garda radio masts.
A spokesman for the company said the frequencies used for the transmission of mobile phone signals are so far apart from those operated by gardai that disruption is impossible.
"If there was a chance of interference the agreement would not be going ahead," a spokesman for the company said.
The wavelength band used by Esat Digifone is 890MHz-960MHz, which is at the higher end of the UHF spectrum. The Garda operates in both VHF and UHF bands. Communications in the former, at a frequency of around 160MHz, are generally base station to patrol car calls. The latter covers transmissions from hand held radios.
According to Esat, steps will be taken to ensure that there is no cross over between frequencies.
The ESB, which allows Digifone to use some of its stations for transmissions, said the antennae have caused no interference in its telecommunications.
The Garda declined to comment on any possible security implications from the antennae. A spokeswoman said that information relating to Garda wavelengths is confidential and that the matter would not be discussed until the agreement with Esat Digifone is finalised.