[ih] ruggedized Honeywell 516 ARPANET IMP cabinet top lifting hooks (Was: The IMP Lights story (Was: Nit-picking an origin story))

[Vint Cerf]

that was Barry Leiner's program, wasn't it?
v


On Mon, Aug 25, 2025 at 1:53 PM Barbara Denny via Internet-history <
internet-history at elists.isoc.org> wrote:

>  Having trouble with the mailing list
>   Another story....
> I thought SINCGARs radios we were getting at SRI were milspec.  I was
> surprised when in one shipment a radio had been broken by the post office.
> Nothing major, just a corner piece had broken off.
> Some of you might be wondering what SRI was doing with these radios.  We
> had a project with ITT to develop a packet applique (another box) to
> transform the analog radio to one that supported packet switching. We used
> the packet radio protocols as a starting point for  the nodes and we did
> demonstrate it during exercises at military bases (Fort Bragg and Fort
> Gordon).  Hosts were using TCP/IP for the applications. Last I heard ITT
> and General Dynamics were competing? for the next production of the radios
> and this included support for packet switching.  This was back in the late
> 80s(?),  shortly after our project ended. I know ITT had also done more
> internal IR&D in this area. I don't know how much of the original packet
> radio technology got incorporated.
> barbara
>
>     On Monday, August 25, 2025 at 06:00:24 AM PDT, Steve Crocker via
> Internet-history <internet-hist
>
> The 516s were ruggedized but they were not "milspec."  Frank Heart was
> concerned they might get roughed up in transit or, possibly, in the
> research labs where they were accessible to STUDENTS!
>
> I believe the hooks -- really eyes, to be precise -- on top were for being
> picked up by a crane for loading and unloading.  I don't know if they were
> ever used.
>
> There was no requirement or expectation that the IMPs would survive a
> nuclear event.  The idea that the net was designed for nuclear
> survivability is a red herring.  At best there was the possibility that
> some aspects of the technology, if successful, might be useful in
> the future for designing a nuclear survivable communications system.  It
> was NOT a design goal for the Arpanet.
>
> Steve
>
>
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