@bd139 They look really good, can't wait to find out if the Heathkit items work and are within specifications. I'd be equally as puffed up if I had that haul, apart from the 7603, while its an item of absolute beauty, I don't have the space but it looks to so versatile with the various plugins, it looks as if you could create the specification to match your requirements, eg, SA, Curve Tracer, Scope etc. as long as you can get the plug in units
Perhaps some of your luck may have rubbed on me remotely, I just made an offer on an TDS210 working and non working one as spares / repair and it was accepted. Non working one apparently comes on but is very bright and has one of the small knobs missing. Fingers crossed I recoup the cost by selling the working one and repair the other.
bd139
The 7000 series plugin rabbit hole awaits !
http://w140.com/tekwiki/wiki/7000-series_plug-ins#Vertical_plug-ins
Good score buddy.
100 MHz, 4ch CRO for 50p/MHz
Want 7L121.8 GHz SA !
http://w140.com/tekwiki/wiki/File:Tek-7l12-led-front.jpg
Never knew they existed.
Do they come up for sale at all ?
Yes one went for just shy of £150 a couple of years back. Didn’t have a mainframe to stick it in then. Or £150!https://www.ebay.com/itm/tektronix-7L12-spectrum-analyzer-100kc-to-1-8gh/153147341936?hash=item23a84afc70:g:FlsAAOSwj~9be3kV
@bd139 They look really good, can't wait to find out if the Heathkit items work and are within specifications. I'd be equally as puffed up if I had that haul, apart from the 7603, while its an item of absolute beauty, I don't have the space but it looks to so versatile with the various plugins, it looks as if you could create the specification to match your requirements, eg, SA, Curve Tracer, Scope etc. as long as you can get the plug in units
Perhaps some of your luck may have rubbed on me remotely, I just made an offer on an TDS210 working and non working one as spares / repair and it was accepted. Non working one apparently comes on but is very bright and has one of the small knobs missing. Fingers crossed I recoup the cost by selling the working one and repair the other.I can't see any evidence they won't work. I am currently testing the V7 meter movement because if that's fecked it's not worth repairing and will go in the "until a suitable movement turns up" box. I don't have the space for the 7603 unfortunately but I'm working on it
nice one with the TDS210
T-shirts. Fields of the Nephilim here... also used Pink Floyd's producer so ...
Edit: confirmed V7 movement is good. Full deflection, nice and smooth, no jags. Knocked up a little current source with a BJT and a pot and a coupe of resistors to test.
just a view of the ps and how it mounts should do it for me. am curious to see how similar it is to the one in the 545xx scopes.
and before I get too much flack. maybe it is possible to restore emission in a crt, but what a crapshoot. sometimes they kill the crt instantly, sometimes they restore the brightness temporarily, and occasionally it seemed to fix it long term. maybe some guys know the magic incantation. but a lot of the time the guy would keep saying "look how much better it is" until he convinced ya' maybe it really was better.
As you can see i already have it out and apart but as i'm sure you can also see there are two connectors and a pair of rails it slides in/out on. They mounted the floppy on top of it as well, real pain in the neck to get at.Holy shitballs. That Hickok is worth it's weight in gold! Get a manual and learn how to use it. I'm sure it must be available out there somewhere.
The A model is tricky, no manuals because this thing has been around since i think the late forties. I got a schematic and thats about it. Though i could probably get a manual from the latter models if i wanted functionality tutorials however.
New rule, if anyone wants a picture of ANY of my hamfest stuff in detail just ask... too much to take pictures of otherwise.
EDIT; A couple more
Sorry for the pink hue my camera currently sucks if not EXACTLY right...
Also, this thing is missing a button not sure what the button does because it aint there.
@bd139.
Build a scope cart and wheel it into the cupboard under the stairs or whatever whenever its not in use might help avoid too much stinkeye?
can see from the pn that the smps is the same one used in the 545xxa scopes. did not see the big plastic pins in your picture. have never pulled them without taking 15 minutes to remember where I set the damn things down.
my 54502a went tits up recently and the problem was leakage from 2 or 3 of those 8 caps stuck between those finned vertical heat sinks. impossible to see they were leaking until removed.
That SP11 battery is, I suspect quite literally, a museum piece in itself. That white background was early 80s vintage livery I think.
Perhaps surprisingly it still has 1.475 volts across it!
What about 7L14 ?
https://www.ebay.com/itm/Tektronix-Mainframe-mit-7L14-Spektrum-Analyzer/283116661563?hash=item41eb116b3b:g:aqAAAOSw6CJbJlU4
Of better still, 7L18 ?
http://w140.com/tekwiki/wiki/File:7L18-front.jpg
7L14 is an option but not at that price .... 7L18 is too high frequency. My operating range is usually around 1.8-14 MHz so nothing particularly demanding required.Your having a purple streak, did you do the lottery at all? If you did, better check your ticket then, might have won that as well[emoji38][emoji38][emoji38]
I bought a lottery ticket once, literally about a week after they started doing it, won a tenner and vowed I'd never buy one again since I made a profit.Samplers. Get samplers.
Bandwidth is all that matters. Bandwidth is king.
"Tek for scopes HP (AK) for everything else "
Two words and they are both yes. That had crossed my mind already.
Reading about the 7S11 and suitable sampling head, such as the S-4 gives the scope 14.5Ghz bandwidth and 25ps rise time. Impressive! I'll keep an eye out. I don't need this and never will but it would be cool. 1GHz sine wave on a 100MHz mainframe (not mine):
I can't see your pictures because you're using facebook to distribute them and facebook is blackholed here. Might I suggest that you use a more trustworthy host. Your choice, but I suspect that I'm not the only person who's decided (long ago in my case, the zone file date suggests since Nov 2013) that allowing packets from any facebook property onto my network was a "bad thingTM". No doubt someone will be along to ridicule me for that, but I'm happy to suffer that for the pleasure of knowing that I've got one of the smallest footprints in facebook's data silos possible.
I came across some NOS ones, and snagged them as I think they're rather cool looking. I plan to put hooks on them and use them as techy-geek Christmas Tree ornaments.
-Pat
Thats a novel use for them
slightly dis-functionalHeathkitGriefkit curve tracer
New one for the POI's, bitseeker.
.....................
Chuckling.Well that Heathkit Griefkit curve tracer certainly seems to be working just fine
I'm sure someone else on here called them that, so went along with it, I think it had something to do with the original owners assembling the kits wrong. I must dig it out and see if I can get it to work with any tunnel diodes, I suspect I have a dead one in the HP 5248M, may have to buy some Russian ones if I can figure out the correct type to order.
David