[Premium-Rx] Fw: IP-250/wj1240, the first: Where was it used and will it work without controller ?

[Peter Ratuschni]

To avoid misunderstanding: Searching the web shows a page of the Naval Instituide Guide where the 1240 is mentioned among other microwave systems. The frequency range could be extended to impressing 30MHz up to 40GHz. The 1971 wj catalogue has four pages about the eventual predecessor system 1140.
With my question where the system may have be used I mean the place of installation, maybe Frankfurt airbase or something.

At a first glance, the parts inside the IP-250 show datecodes from 1972. It is likely that there are some minor or major defects, beside the fans - one of these sounds like a coffee mill. 
Before I invest time and money I would like to know if there is any chance to get some reaction from the unit without having it connected to the appropriate controller. 

b.r.
Peter 

> Gesendet: Dienstag, 29. Juli 2014 um 00:22 Uhr
> Von: "Peter Ratuschni" <zpz at gmx.de>
> An: premium-rx <premium-rx at mailman.qth.net>
> Betreff: [Premium-Rx] IP-250/wj1240, the first: Where was it used and will it work without controller ?
>
> A friend found a IP-250/wj1240 "Refreshing Display" for me. Later displays got the description "digital refreshing display" which seems to make more sense for advertising - a displays should always be able to refresh or it would be completely useless (?).
> The actual display in the unit is a Tektronix 604 which occupies the left half. On the right is the black faced wj unit, with a big label telling it's origin: Palo Alto.
> I wondered about the serial and on the inside cover I found it: S/N 001. I thought it must be possible to find out where this was used but so far I am in the dark.
> 
> After changing line voltage from 115V to 230V in both units and adapting a power cable to the Deutsch connector (don't know, it looks like Deutsch) I gave it some time at the variac. The 604 seems to be totally dead, though I can measure some voltage inside. This unit is well documentated and so I ignored it for now and connected a scope in xy-mode to the wj unit. This shows some nice lighted green push buttons but on the scope I can only measure some little positive deflection, nothing else.
> I had no time to connect some receiver IF output to the unit (I guess it takes 160MHz), but I expected to see at least some horizontal stripes. Does it take a connection to a controller to do anything?
> 
> best regards
> Peter
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