Signal

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
        x1="-45.75"
        x2="542.581"
        y1="336"
        y2="336"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#003f8a" />
        <stop offset=".518" stop-color="#00d7df" />
        <stop offset="1" stop-color="#006df0" />
    </linearGradient>
    <linearGradient id="b" x2="542.581" y1="376" y2="376" href="#a" />
    <linearGradient id="c" x2="542.581" y1="256" y2="256" href="#a" />
    <linearGradient id="d" x2="542.581" y1="296" y2="296" href="#a" />
    <path
        fill="url(#a)"
        d="M240 208h-96a8 8 0 0 0-8 8v240a8 8 0 0 0 8 8h96a8 8 0 0 0 8-8V216a8 8 0 0 0-8-8zm-8 240h-80V224h80z"
    />
    <path
        fill="url(#b)"
        d="M104 288H8a8 8 0 0 0-8 8v160a8 8 0 0 0 8 8h96a8 8 0 0 0 8-8V296a8 8 0 0 0-8-8zm-8 160H16V304h80z"
    />
    <path
        fill="url(#c)"
        d="M504 48h-96a8 8 0 0 0-8 8v400a8 8 0 0 0 8 8h96a8 8 0 0 0 8-8V56a8 8 0 0 0-8-8zm-8 400h-80V64h80z"
    />
    <path
        fill="url(#d)"
        d="M368 128h-96a8 8 0 0 0-8 8v320a8 8 0 0 0 8 8h96a8 8 0 0 0 8-8V136a8 8 0 0 0-8-8zm-8 320h-80V144h80z"
    />
</svg>