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        <issuerName>COMTECH TELECOMMUNICATIONS CORP /DE/</issuerName>
        <issuerTradingSymbol>CMTL</issuerTradingSymbol>
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            <rptOwnerName>Stallone Nancy</rptOwnerName>
        </reportingOwnerId>
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            <rptOwnerStreet1>COMTECH TELECOMMUNICATIONS CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>68 SOUTH SERVICE ROAD, SUITE 230</rptOwnerStreet2>
            <rptOwnerCity>MELVILLE</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11747</rptOwnerZipCode>
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            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President of Finance</officerTitle>
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    <footnotes>
        <footnote id="F1">Restricted stock units were granted under the Company's 2000 Stock Incentive Plan, and represent the right to receive one share of common stock of Comtech Telecommunications Corp. upon vesting of the unit.</footnote>
        <footnote id="F2">Generally, the restricted stock units will vest in installments over a five year period, at a rate of 20% on the first through fifth anniversaries of grant, assuming continued service as an employee. Shares of common stock corresponding to vested units will be delivered to the reporting person within 30 days of vesting.</footnote>
        <footnote id="F3">Option was granted under the Company's 2000 Stock Incentive Plan in consideration of services to be performed by the reporting person after the date of grant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Nancy Stallone</signatureName>
        <signatureDate>2013-06-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
