1
Exhibit 21
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SUBSIDIARIES OF THE ALLEN TELECOM INC.
---------------------------------------
The following is a list of the subsidiaries of Allen Telecom Inc. (Delaware,
02-03-69), and indented, subsidiaries of such subsidiaries, including in each
case the state or other jurisdiction in which each subsidiary was incorporated
or organized, and indicating in each case the percentage of voting securities
owned by the immediate parent.

STATE/COUNTRY OF INCORPORATION OWNERSHIP
NAME OF CORPORATION INCORPORATION DATE %
- ------------------- ------------- ---- -

The Allen Group Canada Limited Canada 04-19-72 100
The Allen Group Internat'l Sales Corp. Barbados 09-15-94 100
The Allen Group International, Inc. Delaware 07-19-73 100
Placo Switzerland 04- -99 100
Mikom Italia Italy 100
Herkules Vierte Verwaltungs G.m.b.H. Germany 09-14-98 100
Allen Telecom GmbH Germany 07-28-90 100
Mikom G.m.b.H. Germany 05-07-85 100
Mikom Vertriebs und Service GmbH (9) Austria 10-18-96 100
Mikom Slovakia, s.r.o. Slovakia 05-30-97 60
Mitras Ltd. Hungary 1992 100
C-com, spol. S.r.o. Czechoslovakia 02-26-96 80
Allen Telecom Canada, Inc. Canada 04-14-93 100
Allen Telecom Civil Law Partnership GbR(2) Germany 10-01-98 100
Allen Telecom (France) S.A. (3) France 04-09-97 100
Telia S.A. (4) France 10-19-90 100
Allen Telecom Group Limited (1) U.K. 05-08-72 100
Allen Telecom (Holdings) Pty Limited Australia 07-18-96 100
Allen Telecom (Australia) Pty Limited (5) Australia 07-23-96 100
Allen Telecom (Hong Kong) Limited (6) Hong Kong 04-25-97 100
Allen Telecom Investments, Inc. Delaware 04-01-97 100
Allen Telecom (Mauritius) Holdings Ltd. Mauritius 11-25-97 100
Decibel Products (Guangzhou) Ltd. China 01-19-98 100
Decibel Shenzhen Ltd. China 07-00 100
Forem Shenzhen Ltd. China 07-00 100
Allen Telecom (Singapore) Pte Limited Singapore 06-03-97 100
Allen Telecomunicacoes do Brasil Ltda (7) Brazil 11-95 100
Antenna Specialists Co., Inc. Delaware 10-07-88 100
Antespec, S.A. de C.V. Mexico 11-14-88 100
ATI International, Inc. Delaware 12-10-97 100
Allen International (Netherlands) BV Netherlands 06-19-98 100
Allen Telecom (Netherlands) BV Netherlands 07-21-98 100
Mikom Schweiz AG Switzerland 04-20-99 100
Allen Telecom Italia Europe S.r.l. Italy 10-10-`97 100
FOREM S.r.l. Italy 11-14-94 100
FOREM France E.u.r.l. France 1993 100
FOREM (UK) Limited U.K. 1988 100
FOREM Finance UK Limited U.K. 09-29-00 100

86
2
Exhibit 21
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INCORPORATION OWNERSHIP
STATE/COUNTRY OF ------------- ---------
NAME OF CORPORATION INCORPORATION DATE %
- ------------------- ------------- ---- -

Tekmar Sistemi S.r.l. Italy 09-20-80 100
Comsearch Holdings Inc. Delaware 08-22-97 100
Comsearch UK Limited U.K. 03-06-98 100
Telespectro de Mexico, S.A. de C.V. (10) Mexico 11-97 100
Decibel Mobilcom Limited (1) England 01-31-91 100
Geometrix911, Inc. Delaware 03-08-00 100
Orion Far East Management Inc. (1) Delaware 07-16-81 100
Orion Industries, Inc., Limited (1) Hong Kong 06-01-71 100
Orion Imports & Exports Limited (1) Hong Kong 09-07-73 100
Orion Industries, Inc. Japan (1) Japan 09-73 100
Orion Industries Taiwan Limited (1) Taiwan 10-73 100
Allen SSI, Inc. (8) California 09-25-74 100

(1) These subsidiaries are not significant in the aggregate and are no
longer active.

(2) 90% of this partnership is owned by Allen Telecom Inc. and the
remaining 10% is owned by Allen Telecom Investments, Inc.

(3) Of the 2,500 shares issued and outstanding, 2,494 shares are owned by
Allen Telecom Inc. and the remaining 6 shares are owned in name only by
Allen employees.

(4) Of the 10,000 shares issued and outstanding, 7,196 shares are owned by
Allen Telecom (France) S.A., 4 shares are owned by Allen employees, and
Allen Telecom (Netherlands) BV owns the remaining 2,800 shares.

(5) Of the 100,000 shares issued and outstanding 19,800 are owned by Allen
Telecom Inc. and 80,200 are owned by Allen Telecom (Holdings) Pty.
Limited.

(6) Of the 1,000 shares issued and outstanding, 999 shares are owned by
Allen Telecom Inc. and 1 share is owned by Allen Telecom Investments,
Inc.

(7) 95% of the outstanding capital stock of this subsidiary is owned by
Allen Telecom Inc. and the remaining 5% is owned by Allen Telecom
Investments, Inc.

(8) Allen SSI, Inc. (fka Signal Science, Incorporated) sold substantially
all its assets to Condor Systems Inc. on October 15, 1999.

(9) 60% of the outstanding capital stock is owned by Mikom G.m.b.H. and the
remaining 40% is owned by the partners of Mikom Vertreibs und Service
G.m.b.H

(10) 98% of the outstanding capital stock of this subsidiary is owned by
Comsearch Holdings, Inc. and the remaining 2% is owned by Allen Telecom
Investments, Inc.