SUBSTITUTE FOR NEC PS2501-1?

[ehayes at VNET.IBM.COM]

I am trying to help a friend build the Kenwood computer interface
described in the QST article but am having no luck in locating
the NEC PS2501-1 optoisolators that are shown in the schematic and
don't really want to pay a second source dealers price.  Does
anyone know of a suitable substitute part or have a data sheet
on the 2501 that I could use to find an alternate part?  Maybe
someone knows of a different circuit that uses different parts?
His rig is a TS450S/AT.  Any help would be appreciated.

Thanks,


73  KC5DVT   Wayne     email...ehayes at vnet.ibm.com
Austin, Texas

>From rwerner at usit.net (Robert Werner, Jr.)  Thu Oct 26 15:11:50 1995
From: rwerner at usit.net (Robert Werner, Jr.) (Robert Werner, Jr.)
Date: Thu, 26 Oct 1995 10:11:50 -0400
Subject: CQ WW SSB
Message-ID: <199510261411.KAA09354 at use.usit.net>

Anyone know of a Web or FTP site where I can get the rules, operating times,
scoring, etc. for the CQ WW SSB contest?
Thanks!
Bob Werner
Bob Werner
UTK Help Desk
rwerner at usit.net
rwerner at utk.edu
Amateur:  KC4URW at N4QEA.#METN.TN.USA.NA


>From XNCM96A at prodigy.com (MR ERIC F LOWELL)  Thu Oct 26 15:14:53 1995
From: XNCM96A at prodigy.com (MR ERIC F LOWELL) (MR ERIC F LOWELL)
Date: Thu, 26 Oct 1995 10:14:53 EDT
Subject: .cty files
Message-ID: <013.03607312.XNCM96A at prodigy.com>

Thanks to all! Many sent me the ftp://ve7tcp.ampr.org address, and a 
couple even e-mailed the file!
Thanks again, see y'all this weekend! Eric