Author Topic: List your test equipment "scores" here!  (Read 482324 times)

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Offline xwarp

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Re: List your test equipment "scores" here!
« Reply #2350 on: March 09, 2019, 04:30:41 pm »
Very nice HP 8566A. My plan is to track down the parts I need to convert it into a B RF section.

I've got an 8568b. Don't really use it for much over the FM band, but I am still on the lookout for an 8566 rf section.
 

Offline xwarp

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Re: List your test equipment "scores" here!
« Reply #2351 on: March 09, 2019, 08:06:43 pm »
Local electronics supply store pick up. 43 dollars.....because I needed it less than I think..... :-DD

« Last Edit: March 09, 2019, 08:24:33 pm by xwarp »
 

Offline Neomys Sapiens

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Re: List your test equipment "scores" here!
« Reply #2352 on: March 09, 2019, 10:04:57 pm »
Now this 'Modulation Meter' makes sense to me. Opposed to, for example, the Marconi  TF 2304. How can a modulation meter be a untuned instrument? Modulation of what? Or is it supposed to be fed with one signal only, like a transmitter monitor? But for FM, it must still be told somehow where the carrier is!
 

Offline 0culus

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Re: List your test equipment "scores" here!
« Reply #2353 on: March 10, 2019, 12:05:47 am »
Yeah the thing is hefty, i think i remember the thing being around 50 kg (110 lb) all together. So they had a very good reason to split it into two boxes, even just lifting half of it takes a good bit of effort.

The HP engineers that worked on it called it the "doomsday spectrum analyzer" and was for a good time among the highest performance spectrum analyzers in the world.

The 8568B system is 112 lbs I believe. The 8566A I just got...could be as much as 130 lbs. The RF section is definitely heavier than the 68B RF section.

Very nice HP 8566A. My plan is to track down the parts I need to convert it into a B RF section.

I've got an 8568b. Don't really use it for much over the FM band, but I am still on the lookout for an 8566 rf section.

Me neither at the moment...until I move I'm going to try to avoid digging into any serious projects. Makes band surveillance fun though. :) My plan eventually is to do ham work in the microwave bands, up to Ku band. Prices for connectors and things start to go up very fast above that.
 

Offline xwarp

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Re: List your test equipment "scores" here!
« Reply #2354 on: March 10, 2019, 03:22:13 am »
Yeah, I'm almost tempted to offer up for trade an 8591e for a working 8566b rf section.

The FM/AM modulation meter I posted above works. Had to track down a failure that prevented the "Set FM Cal" function from working. Turned out to be a bypass cap being shorted.

Now to bench the Tek 485 scope that just crapped out on me....
 

Offline bitseeker

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Re: List your test equipment "scores" here!
« Reply #2355 on: March 10, 2019, 04:52:23 am »
Local electronics supply store pick up. 43 dollars.....

Nice score!

Quote
because I needed it less than I think..... :-DD

also:  need < have < want  :-DD
I TEA.
 

Offline sambonator

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Re: List your test equipment "scores" here!
« Reply #2356 on: March 10, 2019, 06:28:04 am »
If they work this would be a nice score.
https://www.shopgoodwill.com/Item/64632129
 

Offline 0culus

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Re: List your test equipment "scores" here!
« Reply #2357 on: March 10, 2019, 06:40:22 am »
Yeah, I'm almost tempted to offer up for trade an 8591e for a working 8566b rf section.

The FM/AM modulation meter I posted above works. Had to track down a failure that prevented the "Set FM Cal" function from working. Turned out to be a bypass cap being shorted.

Now to bench the Tek 485 scope that just crapped out on me....

That would be a good trade in terms of performance, but not portability.  :-DD
 

Offline xwarp

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Re: List your test equipment "scores" here!
« Reply #2358 on: March 10, 2019, 06:54:33 am »
The portability of the 8591 is a big reason I've not parted with it, but the "two is one and one is none" philosophy is the bigger reason.
 

Offline Neomys Sapiens

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Re: List your test equipment "scores" here!
« Reply #2359 on: March 12, 2019, 01:26:19 am »
It was a slow week in aquisitions. Especially regarding the ESVD fiasko.
But newly in: a Weston light sensor and a Electro-Metrics 'Electrostatic Probe' (E-field close range antenna).
And a spare for the Spitzzange (radio pliers) which I hold most dearly.
 
 

Offline CJay

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Re: List your test equipment "scores" here!
« Reply #2360 on: March 14, 2019, 12:14:45 pm »
Now this 'Modulation Meter' makes sense to me. Opposed to, for example, the Marconi  TF 2304. How can a modulation meter be a untuned instrument? Modulation of what? Or is it supposed to be fed with one signal only, like a transmitter monitor? But for FM, it must still be told somehow where the carrier is!

Have a read of the Sayrosa 257 manual, it explains it all but those meters will lock to the strongest local signal up to 2 ish GHz and they are pretty damn accurate
M0UAW
 
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Offline Neomys Sapiens

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Re: List your test equipment "scores" here!
« Reply #2361 on: March 14, 2019, 10:17:27 pm »
Now this 'Modulation Meter' makes sense to me. Opposed to, for example, the Marconi  TF 2304. How can a modulation meter be a untuned instrument? Modulation of what? Or is it supposed to be fed with one signal only, like a transmitter monitor? But for FM, it must still be told somehow where the carrier is!

Have a read of the Sayrosa 257 manual, it explains it all but those meters will lock to the strongest local signal up to 2 ish GHz and they are pretty damn accurate
In the specs of this instrument it is pointed out far more clearly. For example, the lock indicator and the 10dB requirement. The Marconi does not have a (visible) lock indicator, so nothing led me to think that it might lock. So it's akin to the Interceptor with precise measurement. Nice.
Aaaarghh, what have you done? It's well known that I suffer from TEA!
 

Offline CJay

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Re: List your test equipment "scores" here!
« Reply #2362 on: March 15, 2019, 12:12:06 pm »
Now this 'Modulation Meter' makes sense to me. Opposed to, for example, the Marconi  TF 2304. How can a modulation meter be a untuned instrument? Modulation of what? Or is it supposed to be fed with one signal only, like a transmitter monitor? But for FM, it must still be told somehow where the carrier is!

Have a read of the Sayrosa 257 manual, it explains it all but those meters will lock to the strongest local signal up to 2 ish GHz and they are pretty damn accurate

In the specs of this instrument it is pointed out far more clearly. For example, the lock indicator and the 10dB requirement. The Marconi does not have a (visible) lock indicator, so nothing led me to think that it might lock. So it's akin to the Interceptor with precise measurement. Nice.
Aaaarghh, what have you done? It's well known that I suffer from TEA!

Yeah, sorry, not sorry.

There's a Sayrosa 257 under my bench, lovely piece of kit, which agrees very closely with the modulation analysis functions of my CMU200 for FM, it's got the extra feature of being able to deal with AM, If you've a need for modulation measurement then it's a very nice piece of kit.
M0UAW
 

Offline PaulAm

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Re: List your test equipment "scores" here!
« Reply #2363 on: March 15, 2019, 12:41:24 pm »
Picked up an HP 8754A VNA for around $100, then found a 8501a normalizer for $35.  The dang test set cost as much as those two pieces.

Everything appears to work, although there's a little vertical instability in the display I have to track down.  Have a few more RF bits to track down to get it properly set up.

Have an RF project coming up and needed a VNA but couldn't afford 2K+ for a more modern instrument.  Without the normalizer you're supposed to mark the reference trace on the graticle with a grease pencil  :-DD
 

Offline velik_kazakov

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Re: List your test equipment "scores" here!
« Reply #2364 on: March 21, 2019, 12:40:20 pm »
In last month I grab a Fluke 5440 for 150 GBP +30GBP shipping. Now it is on my desk repaired and working. Wait to receive Fluke 845 (ordered for 50GBP) in few days.
Sorry for my bad English!
 

Offline 0culus

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Re: List your test equipment "scores" here!
« Reply #2365 on: March 21, 2019, 07:23:31 pm »
Picked up an HP 8754A VNA for around $100, then found a 8501a normalizer for $35.  The dang test set cost as much as those two pieces.

Everything appears to work, although there's a little vertical instability in the display I have to track down.  Have a few more RF bits to track down to get it properly set up.

Have an RF project coming up and needed a VNA but couldn't afford 2K+ for a more modern instrument.  Without the normalizer you're supposed to mark the reference trace on the graticle with a grease pencil  :-DD

Wow, that's a steal. Even if you have to sink some money into it, still a great deal.  :-+
 

Online Johnny10

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Re: List your test equipment "scores" here!
« Reply #2366 on: March 21, 2019, 07:33:34 pm »
velik_kazakov   Those were good buys!
Tek TDS7104, DMM4050, HP 3561A, Tek 2465A, HP8903B, DSA602A, Tek 7854, 7834, HP3457A, Tek 575, 576, 577 Curve Tracers, Datron 4000, Datron 4000A, Fluke 181 Nanovoltmeter, Dos4Ever uTracer, HP5335A, EIP534B 20GHz Frequency Counter, TrueTime Rubidium, Sencore LC102, Tek TG506, TG501, SG503, 1062LS101
 

Offline Neomys Sapiens

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Re: List your test equipment "scores" here!
« Reply #2367 on: March 23, 2019, 12:14:34 am »
Pigged out on attenuators somewhat over the last two months.
Triggered by the prospect of having to travel with the brutish cast-casing types my company owns.

« Last Edit: March 23, 2019, 12:17:33 am by Neomys Sapiens »
 

Offline 0culus

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Re: List your test equipment "scores" here!
« Reply #2368 on: March 23, 2019, 12:45:04 am »
Damn, 30 watts. That thing will get HOT!
 

Offline ArthurDent

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Re: List your test equipment "scores" here!
« Reply #2369 on: March 25, 2019, 03:15:20 am »
Today I picked up an Analogic AN3100 10VDC voltage standard that was listed on Facebook Marketplace for $40. I plugged it in and tested it before I bought it and it looked good. The price wasn't too bad considering the condition.  Here's a couple of photos of it connected to my fluke 8842
 

Offline velik_kazakov

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Re: List your test equipment "scores" here!
« Reply #2370 on: March 27, 2019, 08:00:50 am »
velik_kazakov   Those were good buys!
Sure - here have some pics from restoration of both. The fluke 5440 have other repairs, but no time to write some words with pictures for the full recaping and tests after repair.
http://multizet.com/index.php/2019/03/27/fluke-845/
http://multizet.com/index.php/2019/03/15/fluke5440/
Sorry for my bad English!
 
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Offline kahuna0k

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Re: List your test equipment "scores" here!
« Reply #2371 on: April 01, 2019, 02:11:54 am »
One of the mythical <$50 scopes ... $22.50 40Mhz Hitachi. Local pickup so shipping was $0. The bezel around the screen is broken but the thing seems built like a rock. Really amazing how it is completely silent, although I suppose that you could add a passive heat sink to a modern DSO and you will still get something smaller and lighter :D

 

Offline SoundTech-LG

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Re: List your test equipment "scores" here!
« Reply #2372 on: April 02, 2019, 02:52:04 pm »
These are usually 2-3 times the price paid. A few minutes of repair...  VOILA! Alive and well.


WooHoo!


 

Offline TheSteve

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Re: List your test equipment "scores" here!
« Reply #2373 on: April 02, 2019, 04:11:55 pm »
It's awesome you got it going - but the seller offered it to me for hundreds less  >:D >:D >:D
VE7FM
 

Offline Martin.M

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Re: List your test equipment "scores" here!
« Reply #2374 on: April 02, 2019, 05:28:40 pm »
 8) digital System.
 
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