First of all, any electronic jamming is limited in range and time. In theory, if you have enough energy, you can jam any means of radio communication, but we know that this is impossible.
Even GPS jammers have a certain effective range, and this range will change with the target signal strength and anti-jamming ability.
The antenna of the GSP terminal lacks directionality, which is determined by the working principle of the GSP terminal (more than 3 GPS satellites need to be connected at the same time to determine the position), which also causes it to be more susceptible to jamming. While the communication terminal's dish antenna has strong directionality and will only amplify the radio beam in a certain direction, to jam such a device you need much more energy than GSP jamming.