Search found 243 matches

by mansaxel
Sun Feb 16, 2025 8:30 am
Forum: Test Equipment
Topic: Fluke 8125A
Replies: 21
Views: 2616

Re: Fluke 8125A

Any idea what tape machine that is? An obsolete one! My guess would be upper consumer level deck from Technics or perhaps Akai. If I never have to work with tape again, I am a happy person. OTOH, my record player: https://vvv.besserwisser.org/Public/Bilder/tea/very-satisfying.mov The Mono/Stereo bu...
by mansaxel
Thu Feb 06, 2025 3:15 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

8592L update: ... I think I've found all four manuals required, user, calibration, assembly service manual, and CLIP package. None of these contain the power supply. Of course. That's an unpleasant surprise. If it wasn't a spectrum analyser and did have a Boeschert (sp?) PSU, it wouldn't surprise m...
by mansaxel
Thu Feb 06, 2025 2:30 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

8592L update: The power supply, an OEM SMPS thing, has been extracted from the chassis, and taken apart. Well built; nice to get to pieces and will not be a problem going together again. They really boobytrapped this one though, three RIFA PME40 0,1microFarad thingies and a Schaffner inlet filter. O...
by mansaxel
Tue Feb 04, 2025 10:13 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Reference oscillator is OK. This is one bent out of shape machine. https://vvv.besserwisser.org/Public/Bilder/tea/8592-5245L.jpeg Also checked the CAL output using my TinySA; it is spot on. Found this thread that says it could be diodes in an early mixer, if it is, as I suspect, a case of DC injecti...
by mansaxel
Tue Feb 04, 2025 9:23 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

New arrival. One slightly sick 8592L SA. It's deaf, Jim. That little peak is supposed to be -20dBm and 300MHz, not -60dBm and 301,4MHz...
Image
I'm going to pre around a bit more and see what I can do.
by mansaxel
Mon Feb 03, 2025 10:13 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

There's my thread at The Other Plaice, https://www.eevblog.com/forum/testgear/fluke-8125a-military-dmm-teardown/ The other place can fuck right off! I've made it impossible for me to recover my account again now. I noticed that. I perhaps should do the same; The owner's gone off the rails, especial...
by mansaxel
Thu Jan 30, 2025 9:50 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

The next project. A Tek 5110 which I should be picking up from the seller this coming Saturday. It will be my first 5000 series scope and it will get my usual clean/re-cap/restoration. But not until I complete the 7B92 repair which has been on hold due to no time to work on it. I should have the ti...
by mansaxel
Thu Jan 30, 2025 9:42 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Quick update on the ultrasonic cleaner, it did arrive all safe and sound along with enough jewellery cleaner concentrate to make upto about 20 litres but apart a quick unbox to check unwrap to check that is arrived in an undamaged state, which it did, nothing else has been done with it yet due to M...
by mansaxel
Sun Jan 26, 2025 1:45 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

One wonders if that sheriff cruiser has reasonable tyres on. My guess would be "no". Good luck, then. While snow may not be much of a thing in Florida I'm pretty sure that mud is. Everglades and all that. Don't forget the first part of "mud and snow rated tyres". So there's a fa...
by mansaxel
Thu Jan 23, 2025 12:30 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

At least Walton County Sheriff dude's truck is engine on and heat running. The cold plus the standby loads on my truck plus not being driven for several days while I've been under the weather completely killed my car battery. One wonders if that sheriff cruiser has reasonable tyres on. My guess wou...
by mansaxel
Mon Jan 20, 2025 9:32 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

tggzzz wrote: Sun Jan 19, 2025 10:03 am
mansaxel wrote: Sun Jan 19, 2025 4:23 am There's a railway station 1km away.
Is that railway open?
No idea, but on Street View, there's still tracks and they look recently used.
by mansaxel
Sun Jan 19, 2025 4:23 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

tggzzz wrote: Sat Jan 18, 2025 10:47 pm
Trains are great, but try getting one to this wonderful place Theater of Segesta
https://maps.app.goo.gl/Ya7d5yBwZHKWtHns5
There's a railway station 1km away.
by mansaxel
Sat Jan 18, 2025 6:21 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Very interesting indeed. I will have to try driving in Italy. No, you don't. I've driven a large Volvo straight into, and out of the Spanish Quarters downtown Naples. I will never do that again. Trust me on this. No damages, but quite stressful. Down to but not including Rome probably is fine. For ...
by mansaxel
Sat Jan 04, 2025 8:39 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

It seems to be a guitar amplifier with curious styling. No mention I saw of 30L1/7AN7/PCC84, but I didn't look that closely. No silicon in the signal path, which is self-evidently a GOOD THING. Guitar amplifiers were interesting and the overload characteristics and 2nd order distortion were conside...
by mansaxel
Fri Jan 03, 2025 8:47 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

The Brimar / British Valve Project people have made a "TV amp" that aims to use just those valves for AF amplification. It apparently can be done, but of course would require some effort and adaptations. I couldn't find any mention of it on their website. http://www.tellytone.com
by mansaxel
Fri Jan 03, 2025 8:43 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

I have a question for you learned engineers. Riddle me this... On some of the streaming services that Blondie watches many times the audio and video are out of sync. The audio delays a second or two. But interestingly the audio and video on the commercials on the same service are in sync. The inter...
by mansaxel
Fri Jan 03, 2025 6:19 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

I'm selling/have been trying to sell an Aerialite TV signal booster. Relist it, but mark it as "rare, valve/tube, audiophile" - with an increased price, of course. Maybe, but the valves in it are likely to be ones you'd find in a 1950s TV and designed for VHF, so not on the valve audio sh...
by mansaxel
Tue Dec 24, 2024 11:28 pm
Forum: Test Equipment
Topic: Interesting findings on the internet
Replies: 852
Views: 264282

Re: Interesting findings on the internet

I remember back in the day a friend of mine had a brand new fairly large 28" FD Trinitron. So he's sitting there watching it and the wood-worm infested floor gave way. The thing went straight through and landed on top of the people downstairs' television. That was quite a mess to sort out. Lot...
by mansaxel
Tue Dec 24, 2024 11:24 pm
Forum: Test Equipment
Topic: Post a picture of a cat
Replies: 201
Views: 89495

Re: Post a picture of a cat

Maja, the new queen at home. She literally absorbs light, and is very hard to get a good picture of. This is at least reasonable
Image
by mansaxel
Sun Dec 15, 2024 10:54 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

Where would that watt hour meter have been designed / used for then at just 25Hz, I always thought the standard was for either 50 or 60Hz? Niagara Falls? https://en.wikipedia.org/wiki/Utility_frequency#25_Hz_origins Many US electrified railroads are 25Hz to this day. Old New Haven and Pennsy are ex...
by mansaxel
Sun Dec 01, 2024 6:23 pm
Forum: Test Equipment
Topic: HP 427A
Replies: 6
Views: 4106

Re: HP 427A

Wiggly things certainly have their place for adjustments such as you describe. However at rough count I already had nine before I bought this, including TRMS and RF millivoltmeters as well as a VVM. Then there are four portable ones including a couple of AVOs. So I'm not entirely sure what induced ...
by mansaxel
Sat Nov 30, 2024 11:48 pm
Forum: Test Equipment
Topic: HP 427A
Replies: 6
Views: 4106

Re: HP 427A

I just used my 427A (Mains option, and no scaly flakes) to adjust the gain of the outputs of my distribution amp, over in this repair thread.:

Image

That is exactly what the wigglies are good at -- gain / balance adjustments.
by mansaxel
Tue Nov 26, 2024 10:20 pm
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

others here disagree......but I have always really liked the look of those dot LEDs. the 8640b locked to a rubidium standard is my go to sig generator for anything under 500 Mhz. I've got it stacked under my 5245L right now, and there is beauty in both. Through playing with the LF gen in the 8640, ...
by mansaxel
Tue Nov 26, 2024 12:15 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

New arrival, the - hp - 8640B! It's been on the wish list basically since I was bit with the TEA bug. And now I own one. A colleague, who already owns one, tipped me off on one that was offered at a low -- for Sweden -- starting price of about 150USD. And it was very local, and pickup only, the lat...
by mansaxel
Sun Nov 24, 2024 9:42 am
Forum: Test Equipment
Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
Replies: 3402
Views: 1204654

Re: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread

No, the Tek PSU has a North American plug (NEMA 5-15P). Technically this makes it illegal to use in the UK. Given the mediocre qualities of the Nema 5-15P it should be illegal worldwide. I do have a small assortment of compatible cables and outlet strips, bought back in the day when laptop batterie...