Exhibit 99.2

September 15, 1998

RE:  NOTICE OF PROXY MAILING:    PROPOSED SALE OF THE ILLINOIS CABLE TELEVISION
                                 SYSTEM BY CABLE TV FUND 12-A, LTD.

Dear Beneficial Owner of Cable TV Fund 12-A, Ltd.:

Our records indicate that you are a beneficial owner of limited partnership
interest in Cable TV Fund 12-A, Ltd.(the "Partnership"). Enclosed for your
information and review are proxy solicitation materials.

Your qualified plan trustee/custodian, which is the registered owner of your
limited partnership interests, has authorized Jones Intercable Inc., the General
Partner, to mail these proxy materials directly to you and has authorized its
clients, the beneficial owners, to execute the proxy cards on its behalf.

By this authorization, your signature will be legally sufficient and your vote
of the limited partnership interests registered in the name of the
trustee/custodian will be counted without the trustee/custodian's
countersignature.

PLEASE VOTE, DATE AND SIGN AS BENEFICIAL OWNER (INVESTOR), AND RETURN YOUR
SIGNED PROXY CARD TO US IN THE ENCLOSED ENVELOPE AS SOON AS POSSIBLE, BUT NO
LATER THAN OCTOBER 30, 1998.
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If the proposed sale is consummated, the Partnership will mail your share of the
net sales proceeds to your Trustee for your benefit, and the Partnership will
notify you that the distribution has occurred.  The closing of the sale of the
Illinois Systems is scheduled to occur during the fourth quarter of 1998.

No further distributions from the Partnership are expected other than from the
Partnership's portion of any amounts remaining after November 15, 1999 in the
indemnity escrow account. After the sale of the Illinois Systems and the
distribution of the net sales proceeds, including the amounts, if any, remaining
after November 15, 1999, the Partnership will be liquidated and dissolved, most
likely in the fourth quarter of 1999.

For 1998 tax planning, please refer to the Proxy Statement under the caption
Federal Income Tax Consequences including Reporting by Tax Exempt Entities.
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If you have any questions, please call the Jones Investor Services Department.

Sincerely,

Jones Intercable Inc.
General Partner