[vcf-midatlantic] dp8340n IBM 3270 protocol transmitter encoder

William Sudbrink wh.sudbrink at gmail.com
Sat Jan 2 18:42:23 UTC 2021


Thanks for the info.  Unfortunately, so far, I have not turned up any of the
other chips mentioned on the web page.


-----Original Message-----
From: vcf-midatlantic [mailto:vcf-midatlantic-bounces at lists.vcfed.org] On
Behalf Of dave.g4ugm--- via vcf-midatlantic
Sent: Saturday, January 02, 2021 1:11 PM
To: 'vcf-midatlantic'
Cc: dave.g4ugm at gmail.com
Subject: Re: [vcf-midatlantic] dp8340n IBM 3270 protocol transmitter encoder

 Certainly, used for 3270 co-ax connection. There is a project here:-


to interface to an Arduino and hence to a PC. I have built a couple, but you
need a few other chips and a transformer....
... do you have any of the other chips?

Dave Wade

> -----Original Message-----
> From: vcf-midatlantic <vcf-midatlantic-bounces at lists.vcfed.org> On Behalf
> Of William Sudbrink via vcf-midatlantic
> Sent: 02 January 2021 17:58
> To: 'vcf-midatlantic' <vcf-midatlantic at lists.vcfed.org>
> Cc: William Sudbrink <wh.sudbrink at gmail.com>
> Subject: [vcf-midatlantic] dp8340n IBM 3270 protocol transmitter encoder
> Hi,
> In cleaning up my lab and stores, I have discovered that I have a tube of
10 of
> these chips.
> I'm not quite sure what they are for or were used in (or even where I got
> them).  Anyway,
> if they are, in fact, for managing 3270 mainframe terminal traffic,
> probably not of
> much use to me.  I've also noticed that I'm getting very low in vintage
> series CMOS
> chips.  Anybody want to trade?
> Bill S.
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