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Communications
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Telcon: Electronics

5 Station Intercom /
Comms Selector Station

(SWX) D162968
Western Electric 5 station intercom / comms selector station. Pushbutton maintains contact at one of 5 positions. Each button has a DPDT switch. 12 position terminal strip mounted internally. Some internal wiring between switches. Wire in / out ports at top & bottom of back side. Includes label card. 6-3/8"W x 4-3/4"D x 13/16"H. Made in 1953. New in 55 year-old boxes. Naturally, built like a tank.
 

PT3815 Starlan Filter

(TM) PT3815
Valor Transformer PT3815 Starlan filter. 5/8" square x 3/8" high.
$24.75 each
 
50¢ each - 39¢ (25+)

2 Wire Automatic
Ringdown Module

(TEL) 7388-00
Wescom / Rockwell 2 wire automatic ringdown module. The 7388-00 provides automatic ringing toward one of two lines when the instrument connected to one of these lines is placed in the off-hook condition. The 7388-00 is designed so that one loop can be operated ground-start with the other loop being in loop-start operation, or both loops can be in the same mode of operation. NSN: 5905-01-036-8149.

Power input: -24 or -48 vdc

 

9930 Precision Balance
Network

(TEL) 89-9930
Tellabs 9930 precision balance network. Plug-in sub-assemblies approximate the impedance of specific transmission facilities and equipment to provide precision balancing of terminating sets. Improving a set's trans-hybred loss reduces cross-coupling between the hybred's 4 wire transmit and receive paths. Includes complete data sheet and instructions.

$85 each
 
$35 each

Accuflash

(TEL) TES-166
Telephone Equipment Supply made this Accuflash unit. Includes wiring diagram to your system. 1/2" x 1" x 2".
 

Modem Interface

(TEL) CH1812DCPH
Cermetek modem / fax module is the link between equipment circuit and telephone line. Our DAA supports ON / OFF hook control, hook switch detect, ring indicator, isolation and surge protection. All this in a 0.6" x 1" x 2" package. Distributor price $49. Complete documentation available with purchase.
$5 each
 
$10 each - $8 (3+)

Auto Hookswitch

(TEL) AFU-48
Paul Nelson Industries automatic hookswitch flash unit is used to provide automatic, electronically controlled hookswitch flashes for any PBX or Central Office system. User pushes field mounted pushbutton to send fixed pulse duration to system. Operates 24-48 vdc, 600ms flash time. Limited quantity.
 

Ethernet Controller

(SIC) SMC91C90QFP
SMC Single-Chip VLSI Ethernet Controller supports IEEE 802.3 (ANSI 8802-3) and ethernet standards. A high performance 10-base-T node in a 144 pin QFP package. Powers on single 5 vdc. Put an ethernet transceiver in any equipment giving total access to a network of operational status. 700 units available.
$15 each
 
$15 each - $12 (24+)

Remote Stations
Intercom System

(TEL) QUS1C4
Remote stations for Northern Telecom intercom system. New in the box.
 

Linefinder
Circuit

(TEL) DH-580368-A21A
Communications Professionals, Inc. COMPRO linefinder circuit.
$15 each
 
$45 each

For More Information
E-mail: grinnell@surplussales.com

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