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Old 11th February 2019, 02:47 AM   #1861
Jim the Oldbie is offline Jim the Oldbie  United States
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Quote:
Originally Posted by nigelwright7557 View Post
Solder wick and flux for mounting a 64 pin TQFP package.
1mm pin pitch so could be fun.
You got this, Nigel! I did one with 0.5mm pitch awhile back, and I'm old as hell.
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Old 11th February 2019, 04:42 AM   #1862
nigelwright7557 is offline nigelwright7557  United Kingdom
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Originally Posted by Jim the Oldbie View Post
You got this, Nigel! I did one with 0.5mm pitch awhile back, and I'm old as hell.
Your absolutely right mine is 0.5mm pitch too !
I found the knack with soldering is to pin two corners then get it line up spot on. Start laying solder with the syringe but start a few mm before the pins this gives it enough weight to hold down the start lump while I stretch the solder out thinly along the pins.
I found if I don't put too much solder on to start with I don't spend half an hour wicking it off again.
I found its all about technique.
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Old 11th February 2019, 07:31 AM   #1863
jan.didden is offline jan.didden  Europe
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Bought an Agilent 53131A frequency counter on eBay. New, unused, old stock, $ 500. A steal.
No oven options but I bought a separate TCXO add-on from a guy in Poland. When mated, the accuracy will be like 0.1ppb. Need that as a final kit to calibrate the AP 2722. ;-)

Jan
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Old 11th February 2019, 07:44 AM   #1864
tschrama is offline tschrama  Netherlands
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Old 11th February 2019, 07:47 AM   #1865
kazap is offline kazap
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Originally Posted by Pano View Post
This James Levine Mozart CD. Bought for $1 at a local thrift shop.
When I saw the copyright date of 1982 it was a big surprise, since the Compact Disc debuted in October of 1982. That would make it a very early CD release.

But Some research seems to indicate that it might have been released in CD format in about 1985 and on LP before that. So not a super early CD. Still an early digital recording from July 1981 on the Soundstream 50kHz/16 bit recorder.

Thats cool. Its an antique. How do those early AD's sound?
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Old 11th February 2019, 07:56 AM   #1866
soundbrigade is offline soundbrigade  Sweden
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As I am restoring a PAS-3 to its old glory (was given to me in a bad shape) I had to order a 4-sectioned electrolytic, the best I could find, and some other missing caps from AES.

(And NO, absolutely no modifications!)
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Old 27th February 2019, 03:20 AM   #1867
leadbelly is offline leadbelly  Canada
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Bought some emergency kit type stuff: a couple of different kinds of stubby ratchets and a lensatic compass. But the big score was going to an appliance parts store and getting help figuring out what service kit was needed for my old Kenmore fridge. Endless googling for the leaking problem yielded no satisfying solution, but getting the person at the counter to google the OEM Whirlpool number that they knew led to finding the service kit that robustly fixes the problem. Ah perserverance.
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Old 27th February 2019, 03:24 AM   #1868
nigelwright7557 is offline nigelwright7557  United Kingdom
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PCB and components for a model railway shuttle system.
Thought I would try something none audio for a change.

Previous project was a DC speaker protect system using solid state relay and that works great.
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Old 27th February 2019, 03:50 AM   #1869
leadbelly is offline leadbelly  Canada
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Quote:
Originally Posted by nigelwright7557 View Post
PCB and components for a model railway shuttle system.
Thought I would try something none audio for a change.

Previous project was a DC speaker protect system using solid state relay and that works great.
Oh, you're gonna have to say more about that. DC or DCC? And what does shuttle mean, that doesn't translate well to this side of the pond? Is that operation, staging, or some automated portion of a layout?
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Old 27th February 2019, 04:00 AM   #1870
nigelwright7557 is offline nigelwright7557  United Kingdom
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Originally Posted by leadbelly View Post
Oh, you're gonna have to say more about that. DC or DCC? And what does shuttle mean, that doesn't translate well to this side of the pond? Is that operation, staging, or some automated portion of a layout?
Its just a simple back and forth train controller.
You have two stations and the train goes between the two stations back and forth on a timer.
The time is programmable using a trimmer pot from a few seconds to a couple of minutes.
Its controlled by a relay to change direction.
Each end has a diode so the train stops at the correct place before voltage reverse and the diode becomes forward biased.

Power is supplied by a normal model railway controller which controls the speed, it needs 8 volts DC min to work.

Below is someone a schema of a similar system
shuttle9 | harrabylad | Flickr
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