| However, he finally stopped the antenna, satisfied that he had it pointed at the jammer. |
| If that fails, they send a jammer impulse and freeze it up tight. |
| That second image was something which had been hidden by the jammer. |
| If he turned to avoid it, the jammer would blank-out his radar again. |
| The screen was still blank, indicating that the jammer was sweeping in frequency. |
| The third channel is used for jammer classification, interference blanking and sidelobe nulling. |
