Author Topic: 400 series card identification needed.  (Read 648 times)

Offline Babybearjs

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400 series card identification needed.
« on: February 03, 2017, 10:12:16 PM »
enclosed are 2 photos of a 1A2 card on Ebay. I've never seen a card like this with a piggy-back board attached. seller just shows the MFD as 1977 other then that no info. can anyone ID this card, I've never seen one like this.
John

Offline pdxjim911

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Re: 400 series card identification needed.
« Reply #1 on: February 03, 2017, 10:50:50 PM »
This card is a 440A intercom designed to go into a 641A KSU which can be used with the 620 WE key system.

Jim Churchill
Hillsboro, Oregon

C*NET 1-821-9771

unbeldi

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Re: 400 series card identification needed.
« Reply #2 on: February 03, 2017, 10:59:50 PM »
Some key systems such as my 513A2 KSU have two slots for 8" cards.



The inductors on this card tell me that it must be one of the Touchtone adapters or TT intercom units, such as the 424B dial intercom. [Ah, yes, 440A TT adapter, thanks]
« Last Edit: February 03, 2017, 11:17:38 PM by unbeldi »

Offline Babybearjs

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Re: 400 series card identification needed.
« Reply #3 on: February 03, 2017, 11:40:47 PM »
So, its a 440A? I don't remember seeing it in any KSSM paperwork? is it shown in any practice? what the listing number? I have the WE KSSM vol. 1 and 2 but have never seen it. is it located in another part of the BSP's?
John

Offline pdxjim911

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Re: 400 series card identification needed.
« Reply #4 on: February 04, 2017, 11:03:59 AM »
Yes, it is a 440A, the touchtone adapter for the intercom.  The BSP is in volume II of the Key Systems Service Manual, and is number 518-215-419.
Jim Churchill
Hillsboro, Oregon

C*NET 1-821-9771

Victor Laszlo

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Re: 400 series card identification needed.
« Reply #5 on: February 04, 2017, 05:23:24 PM »
It can be easily identified from the second photo, when enlarged.  It says "440A KTU" on the circuit board edge.