Alexander Stepanovich Popov was the inventor of the first portable radio
UTStarcom
The first portable clock or timepiece was invented in 1504 in Nuremberg, Germany. Peter Henlein was the inventor and his piece was not very accurate.
He is the inventor of the first battery radio .
The Regency TR-1 was the first commercially available portable radio and was introduced onto the market in 1954. This first model was extremely expensive and very unreliable.
Thomas Edison
Yes, there are portable TV Radio Combos available.
It wasn't an American,but Italian inventor Guglielmo Marconi in 1895
Ken Kutaragi is considered the inventor of the PlayStation 1,2,& 3 and the PlayStation Portable
I would recommend a portable radio that has only a few buttons easy to carry around and is attractive in appearance. Sony makes very good portable radios I would look there first.
What is the name of the radio engineer that is a principle inventor of T.V.?"
There is no inventor. Before there was sound in the radio.
The difference between a Philips portable radio and a standard radio are that a Philips radio is battery powered, while a regular radio is electrically powered.