What would be a reasonable price for a HP 6237B in good shape? 100 Euro?
End of sale update, that Peak ESR60 on eBay went in then end for £43.Wouldn't touch it with a barge pole, m'self.
mnem
Me neither, I only knew because eBay emailed me telling me that it was finishing soon and they knew that I'd viewed it and that was only because of the link posted here. I think I have enough cap and ESR testers anyway, and a Peak device would be one of the last things I'd consider.
Of the "lets abuse a microprocessor to do what a real piece of TE should do" Chinesium testers out there, the PEAK/ATLAS brand is probably one of the best product lines out there. It was the ESR60 in particular that I wouldn't touch, as I know from experience its inputs are unprotected.
Cheers,
mnem
Yesterday on ebay Kleinanzeigen here: a HP 34401A (all red input jacks) for 190.- Euro. Gone within minutes.
I can't remember who was after the Texas Instruments calculator charger (was it Specmaster ?), turns out we haven't got any TI calculators here, I've now checked it works today, PM me if you want it.
David
Now. Better but not perfect.
The red banana plug is mostly held together with glue and can not be undone properly. Will need some more work.
BTW: any idea what is up with that "all red version"? Does it have a certain meaning or did they run out of black ones ?
BTW: any idea what is up with that "all red version"? Does it have a certain meaning or did they run out of black ones ?
Well eBay prices have gone bananas
The cheaper one wasn’t even shown working to any reasonable degree.Maybe all the chatter on here helps to inflate the prices even more, maybe we need some sort of code to help keep prices low?
That's an interesting thought. There can't be that many potential buyers of some of these things.
I look but I haven't bought a used piece of TE off ebay for years. The prices have generally become far too high, especially for anything small and neat, such as those little RF sig gens which were rebranded by all sorts of people.
If you want something specific, the established dealers are worth a try. Very often they are cheaper than ebay, they offer a short guarantee, and they'd really rather not sell a load of rubbish, unless it really is spares or repairs.
The all red input jacks are also prevalent on other older hp gear such as this 3456A. Personally not a fan. Should be black for the low side.
...
BTW: any idea what is up with that "all red version"? Does it have a certain meaning or did they run out of black ones ?
The multimeter returns three numbers. The first number is the
firmware revision number for the measurement processor; the second
is for the input/output processor; and the third is for the front-panel
processor.
Having just extracted the 8754A VNA from the analyser stack and rebuilt it I can report that a HP 5335A counter stacks nicely on top of a R&S CRTU / CMU-200 and the HP feet lock into the guide on the top of the R&S.
End of sale update, that Peak ESR60 on eBay went in then end for £43.Wouldn't touch it with a barge pole, m'self.
mnem
Me neither, I only knew because eBay emailed me telling me that it was finishing soon and they knew that I'd viewed it and that was only because of the link posted here. I think I have enough cap and ESR testers anyway, and a Peak device would be one of the last things I'd consider.
Of the "lets abuse a microprocessor to do what a real piece of TE should do" Chinesium testers out there, the PEAK/ATLAS brand is probably one of the best product lines out there. It was the ESR60 in particular that I wouldn't touch, as I know from experience its inputs are unprotected.
Cheers,
mnem
The ESR60 is not completely unprotected, mine checks for voltage before starting the capacitance/ESR measurements, it will try to discharge low voltage capacitors & abort the test if it necessary, I've had this activate at least once, I've not attempted to confirm the higher voltage limits shown in the specs here; https://www.peakelec.co.uk/resources/esr60.html
Maybe you were confused with the LCR40, LCR45, these along with many lab grade LCR meters, have zero protection against charged capacitors.
It's always a good to check HV caps with a DVM before measuring, even if there is a discharge resistor fitted, as they can go open circuit, or be missing in some cheap consumer crap.
David
I'm pondering whether I will make it to the FRARS hamfest on Sunday, and/or the Rugby hamfest next weekend. Both are equally distant. Any recommendations based on past experience?
Congratulations and commiserations in equal amounts. Had the same problem with my old Fiat. Someone removed the side of it when it was parked outside the school. I didn't bother claiming because I was looking for excuses to get rid of it. It didn't die quite enough to write it off though.
As for the hamfests, I have not been to either yet. I will be attending FRARS tomorrow though on recommendation elsewhere. After I've loaded the car up with goodies, I hope, I will be mugged an extortionate fee for parking and lunch and go and have an amble around here with the older assistant:
Rugby is a no for me. Maybe next year.
Next one for me will be MKARS (Milton Keynes) on the 28th, which is on my "half way through house move day off". Also dangerously close to TNMOC.Speaking of the car... repaired, or ailment mysteriously self-healed?
Also, best wishes for a painless move.
mnem
...you know, the exact opposite of my moves for the last 3 years.
Self healed. Being treated with suspicion. Has routine service on Monday so they’re going to look at it then. Fingers crossed.
Thank you
I suppose I ought not to note that there are more geraniums listed by your supplier. You might not have enough cash leftover for the hamfests and car repairs (or even petrol).
My eBay scraper already notified me
As for the transistors, not interested in those ones. The quantity and types do not excite me too much
The all red input jacks are also prevalent on other older hp gear such as this 3456A. Personally not a fan. Should be black for the low side.
I've seen the same for the E361xA HP powersupplies. Either Red, Black, Green for +ve, -ve, GND, or Red, Red Green for the same layout.
I also found one with a single turn current limit pot from factory, had slightly different moulding on the front panel, but I have found no info on that particular variant, it had no option number for that difference. I swapped it to the usual 10-turn pot.
I swapped all my banana jacks to Red, Black, Green to prevent me from letting the smoke out of my projects....
The all red input jacks are also prevalent on other older hp gear such as this 3456A. Personally not a fan. Should be black for the low side.
I've seen the same for the E361xA HP powersupplies. Either Red, Black, Green for +ve, -ve, GND, or Red, Red Green for the same layout.
I also found one with a single turn current limit pot from factory, had slightly different moulding on the front panel, but I have found no info on that particular variant, it had no option number for that difference. I swapped it to the usual 10-turn pot.
I swapped all my banana jacks to Red, Black, Green to prevent me from letting the smoke out of my projects....
Dumb question time. Where can I get black jacks that match the red on my 3456A?
Are you suggesting some sort of bd139 effect is going on here...?
On the latter note, sadly, one of my favorite "wholesalers of junque TE" has changed their game:
AllTest has evidently gone balls-deep on the legit TE distributor game; looks like they've gotten themselves some competent (I hope ) techs to do repairs and are now offering gear as "pre-owned" and "refurbished" with warranty and prices to match.
IIRC, I saw med mention that they even got Shahriar to do a repair on one unit; for the publicity, I'm sure.
Point being... a lot less yummy stuff from them being sold as "parts only" anymore... and I fear this also means we will start seeing "as-is/parts only" units that are actually "made from slapped-together borked bits taken off repaired units" from this once-favorite source...
mnem
The all red input jacks are also prevalent on other older hp gear such as this 3456A. Personally not a fan. Should be black for the low side.
I've seen the same for the E361xA HP powersupplies. Either Red, Black, Green for +ve, -ve, GND, or Red, Red Green for the same layout.
I also found one with a single turn current limit pot from factory, had slightly different moulding on the front panel, but I have found no info on that particular variant, it had no option number for that difference. I swapped it to the usual 10-turn pot.
I swapped all my banana jacks to Red, Black, Green to prevent me from letting the smoke out of my projects....
Dumb question time. Where can I get black jacks that match the red on my 3456A?
On the 3456a they are all in 1 plastic part if I remember correctly. Plus, I wouldn't touch anything on the input. Don't you have some black paint somewhere ?
Edit: Added a picture of the input connectors of the 3456a.
AllTest has evidently gone balls-deep on the legit TE distributor game; looks like they've gotten themselves some competent (I hope ) techs to do repairs and are now offering gear as "pre-owned" and "refurbished" with warranty and prices to match.
IIRC, I saw med mention that they even got Shahriar to do a repair on one unit; for the publicity, I'm sure.
End of sale update, that Peak ESR60 on eBay went in then end for £43.Wouldn't touch it with a barge pole, m'self.
mnem
Me neither, I only knew because eBay emailed me telling me that it was finishing soon and they knew that I'd viewed it and that was only because of the link posted here. I think I have enough cap and ESR testers anyway, and a Peak device would be one of the last things I'd consider.
Of the "lets abuse a microprocessor to do what a real piece of TE should do" Chinesium testers out there, the PEAK/ATLAS brand is probably one of the best product lines out there. It was the ESR60 in particular that I wouldn't touch, as I know from experience its inputs are unprotected.
Cheers,
mnem
The ESR60 is not completely unprotected, mine checks for voltage before starting the capacitance/ESR measurements, it will try to discharge low voltage capacitors & abort the test if it necessary, I've had this activate at least once, I've not attempted to confirm the higher voltage limits shown in the specs here; https://www.peakelec.co.uk/resources/esr60.html
Maybe you were confused with the LCR40, LCR45, these along with many lab grade LCR meters, have zero protection against charged capacitors.
It's always a good to check HV caps with a DVM before measuring, even if there is a discharge resistor fitted, as they can go open circuit, or be missing in some cheap consumer crap.
DavidNope... the ESR60 I had in my repair shop in Florida warned of no protection right on the front of it. There was some aftermarket hackery made to give some small measure of protection, which I suppose PEAK/ATLAS might have adopted as a revision... but key point is it did not have the isolation relay in the frontend to keep the measuring bits out of circuit until the cap was safely discharged that the ESR70 and later had.
After that, no interest in the ESR60 under any circumstances. I know that if I did dare to buy one, it would probably be mine (or the same exact version) come back around on the great wheel to bite my scaly dwagon arse after unloading it on the Bay of Fleas.
mnem
The all red input jacks are also prevalent on other older hp gear such as this 3456A. Personally not a fan. Should be black for the low side.
I've seen the same for the E361xA HP powersupplies. Either Red, Black, Green for +ve, -ve, GND, or Red, Red Green for the same layout.
I also found one with a single turn current limit pot from factory, had slightly different moulding on the front panel, but I have found no info on that particular variant, it had no option number for that difference. I swapped it to the usual 10-turn pot.
I swapped all my banana jacks to Red, Black, Green to prevent me from letting the smoke out of my projects....
Dumb question time. Where can I get black jacks that match the red on my 3456A?
I was very confused for a few minutes
Geranium:
Germanium:
When I leave work I will head straight to the H/W store to buy a rubber plunger, then to the super market to get some drain cleaner... and hope I can't fix it this way.
you should be able to free any blocked tube with multitudes of 50 grams ...