Search found 243 matches
- 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...
- 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...
- 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...
- 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...
- 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...

I'm going to pre around a bit more and see what I can do.

I'm going to pre around a bit more and see what I can do.
- 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...
- 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...
- 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...
- 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...
- 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...
- Mon Jan 20, 2025 9:32 pm
- Forum: Test Equipment
- Topic: Test Equipment Anonymous (TEA) : Discussion and Group Therapy Thread
- Replies: 3402
- Views: 1204654
- 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
There's a railway station 1km away.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
- 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 ...
- 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...
- 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
- 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...
- 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...
- 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...
- 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


- 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...
- 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 ...
- 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.:

That is exactly what the wigglies are good at -- gain / balance adjustments.

That is exactly what the wigglies are good at -- gain / balance adjustments.
- 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, ...
- 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...
- 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...