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CALIFORNIA

MacFarlane
INTERSTATE RADIO TELEPHONE CORP.
Communications
PRINCE FREDERICK, MD. 20678
& Electronics, Inc. Coast Mobilphone
Telephone (301) 535-1775
LOS ANGELES, CALIF Service
234 w. 37th Place (213)233-6201
OFFICES COAST TO COAST SANTA ANA, CALIF.
2115 N. Main St., (714)543-8351
Please Address Reply To: VENTURA, CALIF.
1409 Callens Rd. (805)642-6017
Director of Communications POMONA, CALIF.
2820 Metropolitan Pl-(714 )593-6613
Department of Radio Operations
Anytown, U.S.A.
Dear Sir:
SAN DIEGO 325 STATE ST.
Have you ever considered what would happen if one
of your mobile radio units became locked on the air ? Even
worse, what if he were near your Base Station Receiver Cxntom dommunicaHonA SANTA BARBARA
when this took place ? Several administrators of large CALIFORNIA
Public Safety systems asked us to develop a device which
will give your radio system the protection you need against
a stuck mike, bad mike cord, etc. Phone: 805-962-9155
4401 Twain Ave. 741-282-7644
The device is called a PTO (Positive Turn Off) and
is manufactured exclusively for us by a well known electronics
manufacturer and designer. If the transmitter stays on
approximately one<minute, it automatically shuts off that unit.
This time is variable according to your needs for less or more
than a minute. When the problem is corrected, it automatically
resets. This device will work with all name brands of two-way
radio such as General Electric, Motorola, RCA, etc. TWO WAY RADIO SYSTEMS
I would appreciate your giving of this information to your ★ CLOSED CIRCUIT TV
technical experts or contract maintenance department. This pi ice ★ Intercommunications &
PUBLIC ADDRESS SYSTEMS
of the PTO, in small quantities is $15. With very large orders ★ TOWERS & ANTENNAS
we would welcome a chance to furnish a quote. SALES - SERVICE
L A. COUNTY LEASE - INSTALLATIONS
Sincerely,
723-0259 SYSTEM ENGINEERING
698-0088
Donald R. Cook
ORANGE COUNTY
714 526-6033 MOBILE RADIO INC.
11819 E. BURKE
SANTA FE SPRINGS
CALIFORNIA