<SEC-DOCUMENT>0001325533-11-000016.txt : 20111004
<SEC-HEADER>0001325533-11-000016.hdr.sgml : 20111004
<ACCEPTANCE-DATETIME>20111004165549
ACCESSION NUMBER:		0001325533-11-000016
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20111003
FILED AS OF DATE:		20111004
DATE AS OF CHANGE:		20111004

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			R F INDUSTRIES LTD
		CENTRAL INDEX KEY:			0000740664
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC CONNECTORS [3678]
		IRS NUMBER:				880168936
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1031

	BUSINESS ADDRESS:	
		STREET 1:		7610 MIRAMAR RD
		STREET 2:		BLDG 6000
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92126-2313
		BUSINESS PHONE:		8585496340

	MAIL ADDRESS:	
		STREET 1:		7620 MIRAMAR RD #4100
		STREET 2:		7620 MIRAMAR RD #4100
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92126-4202

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CELLTRONICS INC
		DATE OF NAME CHANGE:	19910204

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Red Oak Partners, LLC
		CENTRAL INDEX KEY:			0001325533
		STATE OF INCORPORATION:			NY
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-13301
		FILM NUMBER:		111124456

	BUSINESS ADDRESS:	
		STREET 1:		654 BROADWAY
		STREET 2:		SUITE 5
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012
		BUSINESS PHONE:		212-614-8952

	MAIL ADDRESS:	
		STREET 1:		654 BROADWAY
		STREET 2:		SUITE 5
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10012
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0304</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-10-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000740664</issuerCik>
        <issuerName>R F INDUSTRIES LTD</issuerName>
        <issuerTradingSymbol>RFIL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001325533</rptOwnerCik>
            <rptOwnerName>Red Oak Partners, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>654 BROADWAY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 5</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10012</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-10-03</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>20000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.3028</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>644610</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By The Red Oak Fund, LP</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F3"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Red Oak Partners, LLC (the &quot;General Partner&quot;) serves as the general partner of The Red Oak Fund, LP, a Delaware limited partnership (the &quot;Fund&quot;), the direct owner of the subject securities. David Sandberg is the managing member of the General Partner and the Fund's portfolio manager.</footnote>
        <footnote id="F2">Red Oak Partners, LLC (the &quot;General Partner&quot;) serves as a general partner of Pinnacle Fund LLLP, a Colorado limited liability limited partnership (&quot;Pinnacle&quot;), the direct owner of the subject securities. David Sandberg is a limited partner of Pinnacle, the managing member of the General Partner and an investment advisor to Pinnacle.</footnote>
        <footnote id="F3">Each Reporting Person disclaims beneficial ownership of all securities reported herein, except to the extent of their pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the shares for purposes of Section 16 of the Securities and Exchange Act of 1934 or for any other purpose.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>David Sandberg</signatureName>
        <signatureDate>2011-10-04</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
