Re: Anyone able to do GC or GC-MS on Hp ThinkJet Black ink ( for the Hp ThinkJet 2225 printer; Hp 9226a Or Hp 51604a ink cartridges ) ?
I gave up on inkjet printers a few years ago, replacing it with a second (identical) old HP Laserjet that uses aftermarket cartridges and is so old it complains but doesn¡¯t refuse to use the cheap cartridges.?
On the rare occasions I need to print in color, I take the job to the place where I volunteer and use their Brother MFC-L8905CDW color laser printer. It replaced an HP M477fdw color Laserjet that broke (the fuser died) and couldn¡¯t be repaired¡ªtoo old, HP had stopped supporting it.?
On 10/6/24 15:10, Roy J. Tellason, Sr. wrote:
> THIS is why I've pretty much given up on the idea of inkjet printers.? I have a LaserJet 1320 sitting here and turn it on when I need to print something,? otherwise it just sits there and doesn't use anything up.? Love that duplexer,? too!? :-)
? ?Yep.? Consumer inkjet printers have for many years been a scam
perpetrated upon people who don't know any better, and won't learn about
technology before using it.? Or more importantly, buying it.
? ?Xerox WorkCentre 4260 and HP Color LaserJet 5550dtn here.? No time
for farting around with consumer toys; I have work to do.
? ?I cannot count the number of times I've had the same conversation
with clueless people:
Me: "That's dumb.? You would be better off with a laser printer."
Moron: "Laser printer!? OH NOES, toner cartridges be 'SPENSIVE!"
Me: "How many pages do you get from a $50 set of inkjet cartridges?"
Moron: "150 or so"
Me: "I get about 20,000 pages from a $150 toner cartridge."
Moron: [eyes glaze over] "But...FOOTBALL!"
? ? ? ? ? ? -Dave
--
Dave McGuire, AK4HZ
New Kensington, PA
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
A few tears go, someone on an antique radio newsgroup stated that he'had just won an auction for a HP3325A. One of the self appointed 'experts' insisted that he had to 'replace every capacitor!'. I poibted out that it was a digital design, with hundreds of capacitors, and all were long life, modern components. I was told off for 'Not doing things right'. Sadly most of the people on that newsgroup could barely solder, bet alon cang components on multi layer boards. There were no high acid paper capacitors, or substandard electrolytics. so there was no reason to mutilate the unit. I have a National NC 183R receiver that a supposed 'Electrical Engineer had 'recapped. There are wires run all of the place to a large wad off capacitors wrapped in layers of electrical tap that hangs out of the back of the unit. I'm going to have to remove it all, and start over. Not only that, but he shouldn't be allowed near a soldering iron. The only mod I intend to do t it is use he accessory connector to geed a SDR moduke to process the IF? to various modes that din't exist back in the '50s.
On Tue, Oct 8, 2024 at 1:49?PM Harold Foster via <halfoster= [email protected]> wrote: On Tue, Oct 8, 2024 at 11:40 AM, Dave McGuire wrote:
The collector might say "Noooo, that will destroy the originality!"
The working engineer might say "I'm going to do it; it will improve reliability."
The ham radio guy's response might be "I'll do that because it'll make it cheaper."
Who is "right"? I say they all are. They are each acting in the best interest of their own use cases.
I - and I suspect many others - are a combination of all three depending on the circumstances.? Like you I tend to make a determination depending on whether it is "part of a collection" or a daily use "tool."? Sometimes there is overlap, usually not.? For me personally the two items I have modified in a significant way are the HP 3400A and the HP 5087A. On my bench currently is a 3400A whose only original circuit board is the power supply - it functions better than the original and does everything that I ask... but it is not in any way a "3400A" any more, at least in my mind.? I have another that is one of the very early models that has been cleaned and restored without any significant changes or new parts - it works well and I am very proud of it as a collectable.? The 5087A is on the 4th revision of the output amplifier boards just because I enjoy trying new ways to skin the same cat.? All work just fine... well, not really the first - forgot and left the ground plane under the inductors which was not optimal ;-) Anyway, in the end I reduced (completely unnecessarily) the harmonics another 15-20 dB or so with cards that bear no resemblance to the originals other than form factor and yet I still think of it as a "5087A" and not a weird Frankenstein of a distribution amplifier.? So, I guess that I'm just very flexible in my definitions.? I think I was expecting mostly responses such as the "collector" example Dave gave above basically saying that I was a complete heretic for even considering molesting a poor piece of classic HP goodness - I'm relieved to see that I'm not alone in my equipment modification perversions ;-)
?
Hal
?
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
If Dummy Dingbat wishes to put big wheel tubs, drag slicks, skinny front tires, hood scoops, and a chopped top on his 1932 Bugatti Royale, Then who is anyone to tell him he can't do that?
True. But I do reserve the right to tar and feather Dummy Dingbat and carry him around on a piece of rail track. In the best (cartoon) Wild West tradition.?
Wilko
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
On Tue, Oct 8, 2024 at 12:49 PM, Harold Foster wrote:
I'm relieved to see that I'm not alone in my equipment modification perversions ;-)
Well, at least for the equipment that actually works for a living anyway...
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
On Tue, Oct 8, 2024 at 11:40 AM, Dave McGuire wrote:
The collector might say "Noooo, that will destroy the originality!"
The working engineer might say "I'm going to do it; it will improve reliability."
The ham radio guy's response might be "I'll do that because it'll make it cheaper."
Who is "right"? I say they all are. They are each acting in the best interest of their own use cases.
I - and I suspect many others - are a combination of all three depending on the circumstances.? Like you I tend to make a determination depending on whether it is "part of a collection" or a daily use "tool."? Sometimes there is overlap, usually not.? For me personally the two items I have modified in a significant way are the HP 3400A and the HP 5087A. On my bench currently is a 3400A whose only original circuit board is the power supply - it functions better than the original and does everything that I ask... but it is not in any way a "3400A" any more, at least in my mind.? I have another that is one of the very early models that has been cleaned and restored without any significant changes or new parts - it works well and I am very proud of it as a collectable.? The 5087A is on the 4th revision of the output amplifier boards just because I enjoy trying new ways to skin the same cat.? All work just fine... well, not really the first - forgot and left the ground plane under the inductors which was not optimal ;-) Anyway, in the end I reduced (completely unnecessarily) the harmonics another 15-20 dB or so with cards that bear no resemblance to the originals other than form factor and yet I still think of it as a "5087A" and not a weird Frankenstein of a distribution amplifier.? So, I guess that I'm just very flexible in my definitions.? I think I was expecting mostly responses such as the "collector" example Dave gave above basically saying that I was a complete heretic for even considering molesting a poor piece of classic HP goodness - I'm relieved to see that I'm not alone in my equipment modification perversions ;-)
?
Hal
?
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Re: Anyone able to do GC or GC-MS on Hp ThinkJet Black ink ( for the Hp ThinkJet 2225 printer; Hp 9226a Or Hp 51604a ink cartridges ) ?
On 10/6/24 15:10, Roy J. Tellason, Sr. wrote: THIS is why I've pretty much given up on the idea of inkjet printers. I have a LaserJet 1320 sitting here and turn it on when I need to print something, otherwise it just sits there and doesn't use anything up. Love that duplexer, too! :-) Yep. Consumer inkjet printers have for many years been a scam perpetrated upon people who don't know any better, and won't learn about technology before using it. Or more importantly, buying it. Xerox WorkCentre 4260 and HP Color LaserJet 5550dtn here. No time for farting around with consumer toys; I have work to do. I cannot count the number of times I've had the same conversation with clueless people: Me: "That's dumb. You would be better off with a laser printer." Moron: "Laser printer! OH NOES, toner cartridges be 'SPENSIVE!" Me: "How many pages do you get from a $50 set of inkjet cartridges?" Moron: "150 or so" Me: "I get about 20,000 pages from a $150 toner cartridge." Moron: [eyes glaze over] "But...FOOTBALL!" -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
And weigh considerably less than 56 pounds, one would hope.? ? ?Jim Ford, Laguna Hills, California, USA?
On Tue, Oct 8, 2024 at 10:06 AM, jmr via groups.io <jmrhzu@...> wrote: At some point someone will probably design a modern replacement for the top half of the classic old HP 8568B and 8566B spectrum analysers. It should be possible to design a decent digital IF (with IF preselection) and a really nice touch display. This would transform these old analysers, making them able to analyse modern signals and compete with modern instruments. Ideally, it would be a (plug and play) reversible modification in case anyone wants to restore one to the original state with the 85662 display section complete with CRT.
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
At some point someone will probably design a modern replacement for the top half of the classic old HP 8568B and 8566B spectrum analysers. It should be possible to design a decent digital IF (with IF preselection) and a really nice touch display. This would transform these old analysers, making them able to analyse modern signals and compete with modern instruments. Ideally, it would be a (plug and play) reversible modification in case anyone wants to restore one to the original state with the 85662 display section complete with CRT.
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
That's right, the DTX deathmobile!? Well, it was all banged up anyway, right?!? LOL!? Jim?
On Tue, Oct 8, 2024 at 9:40 AM, Dave McGuire <mcguire@...> wrote: On 10/8/24 10:56, Jim Ford wrote:
> The test equipment in my garage lab I consider tools, and as such is
> subject to change (purchase, sale, exchange, repair, give away, etc.).?
> It is not a collection of museum pieces!? A wise person once said that
> we should love people and use things and not the other way around.?
> Collecting goes against that great advice.? I have absolutely no qualms
> about modifying any piece of test equipment I own if it improves its
> performance.? Can't be sentimental about it.
? I'm sentimental about a lot of things; I won't be "upgrading" anything in my HP 200A for example.? But most of the equipment in my lab are tools; I use them to make a living.? If there's something that can be done to improve the performance or reliability of an instrument upon which I depend for my livelihood, I think it'd be pretty dumb for me to not perform the modification. ? But this is one of those instances where people don't understand that there are different groups of people on this mailing list, whose goals are different.? There are the collectors, the "vintage tech" people, the working engineers, the ham radio people...I see it because I fall into all of those groups. (though I've not been an active ham in decades) ? In the same vein as "three engineers walk into a bar": Just say three people here have the same instrument, and a thread pops up about a modification: ? The collector might say "Noooo, that will destroy the originality!" ? The working engineer might say "I'm going to do it; it will improve reliability." ? The ham radio guy's response might be "I'll do that because it'll make it cheaper." ? Who is "right"?? I say they all are.? They are each acting in the best interest of their own use cases. ? ? ? ? ? ? ? -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
On 10/8/24 10:56, Jim Ford wrote: The test equipment in my garage lab I consider tools, and as such is subject to change (purchase, sale, exchange, repair, give away, etc.). It is not a collection of museum pieces!? A wise person once said that we should love people and use things and not the other way around. Collecting goes against that great advice.? I have absolutely no qualms about modifying any piece of test equipment I own if it improves its performance.? Can't be sentimental about it. I'm sentimental about a lot of things; I won't be "upgrading" anything in my HP 200A for example. But most of the equipment in my lab are tools; I use them to make a living. If there's something that can be done to improve the performance or reliability of an instrument upon which I depend for my livelihood, I think it'd be pretty dumb for me to not perform the modification. But this is one of those instances where people don't understand that there are different groups of people on this mailing list, whose goals are different. There are the collectors, the "vintage tech" people, the working engineers, the ham radio people...I see it because I fall into all of those groups. (though I've not been an active ham in decades) In the same vein as "three engineers walk into a bar": Just say three people here have the same instrument, and a thread pops up about a modification: The collector might say "Noooo, that will destroy the originality!" The working engineer might say "I'm going to do it; it will improve reliability." The ham radio guy's response might be "I'll do that because it'll make it cheaper." Who is "right"? I say they all are. They are each acting in the best interest of their own use cases. -Dave -- Dave McGuire, AK4HZ New Kensington, PA
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
And the Lincoln Continental in Animal House ?
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Show quoted text
On Oct 8, 2024, at 10:37?AM, Jim Ford via groups.io <james.ford@...> wrote:
?LMAO, Matt!? That scene in Bachelor Party where spoiled rich kid Cole has his precious Porsche, um, modified by the guys comes to mind!? ?Jim On Tue, Oct 8, 2024 at 8:22 AM, Matt Harris <kd4pbs@...> wrote: To me, it all depends on the rarity, but ultimately, nobody has the right to denounce what someone does with something the someone owns.? If Dummy Dingbat wishes to put big wheel tubs, drag slicks, skinny front tires, hood scoops, and a chopped top on his 1932 Bugatti Royale, Then who is anyone to tell him he can't do that?
I think we'd be hard pressed to find any piece of test equipment on the same rarity and general historical value level as that Bugatti.
?
But if my vintage, "rare" HPxxx which has the provenance of being used in the most critical piece of project Trinity and seen in nearly every documentary piece of film footage can be resurrected by replacing every last vacuum tube with FETs, then I call that a success.
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
On Tue, Oct 8, 2024 at 10:22 AM, Matt Harris wrote:
but ultimately, nobody has the right to denounce what someone does with something the someone owns
True enough - but I certainly reserve the right to laugh my a$$ off over it ;-)
?
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
LMAO, Matt!? That scene in Bachelor Party where spoiled rich kid Cole has his precious Porsche, um, modified by the guys comes to mind!? ?Jim
On Tue, Oct 8, 2024 at 8:22 AM, Matt Harris <kd4pbs@...> wrote: To me, it all depends on the rarity, but ultimately, nobody has the right to denounce what someone does with something the someone owns.? If Dummy Dingbat wishes to put big wheel tubs, drag slicks, skinny front tires, hood scoops, and a chopped top on his 1932 Bugatti Royale, Then who is anyone to tell him he can't do that?
I think we'd be hard pressed to find any piece of test equipment on the same rarity and general historical value level as that Bugatti.
?
But if my vintage, "rare" HPxxx which has the provenance of being used in the most critical piece of project Trinity and seen in nearly every documentary piece of film footage can be resurrected by replacing every last vacuum tube with FETs, then I call that a success.
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Re: 8665B noisy signal & Cal Errors
Ahh, indeed it appears you had some smoking guns then.? The supply is pretty straight forward (at least relatively speaking) so I'm sure you'll have a working unit again soon.
73,
Matt
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
To me, it all depends on the rarity, but ultimately, nobody has the right to denounce what someone does with something the someone owns.? If Dummy Dingbat wishes to put big wheel tubs, drag slicks, skinny front tires, hood scoops, and a chopped top on his 1932 Bugatti Royale, Then who is anyone to tell him he can't do that?
I think we'd be hard pressed to find any piece of test equipment on the same rarity and general historical value level as that Bugatti.
?
But if my vintage, "rare" HPxxx which has the provenance of being used in the most critical piece of project Trinity and seen in nearly every documentary piece of film footage can be resurrected by replacing every last vacuum tube with FETs, then I call that a success.
|
Re: Thoughts on upgraded(?) replacement parts for vintage equipment
The test equipment in my garage lab I consider tools, and as such is subject to change (purchase, sale, exchange, repair, give away, etc.).? It is not a collection of museum pieces!? A wise person once said that we should love people and use things and not the other way around.? Collecting goes against that great advice.? I have absolutely no qualms about modifying any piece of test equipment I own if it improves its performance.? Can't be sentimental about it.? ? ? ? Jim Ford, Laguna Hills, California, USA?
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
On Tue, Oct 8, 2024 at 06:45 AM, Ed (scskits) wrote:
The big problem with these boards was not the board, but the metal shield.
I never had that re-manufactured.
?
I am thinking that it won't make much of a difference not to have them and I have more shields than cards anyway.? Not enough, but enough to do the ones that I will sell anyway.? In the unlikely event it matters, it is not that expensive to have blanks laser cut.? I have a small metal brake to do the major bends and use small glue-on holders for the side board supports instead of the "V" bend.? One box is missing the overall shield, which sucks, but again it will probably not make much difference and I'll use that one as a personal item - I will just use it for local reference distribution and the case itself should provide enough shielding for my needs.
?
Hal
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
?
?
Perhaps the most significant area of instrumentation Restoration Retrofit,?
?(other than power supply & amplifier issues),? would be displays:
?
Older instrument LCD, LED, Vacuum Fluorescent VFD, & CRT's, (both Vector & Raster scan) problems plague us all.
?
Having? *low cost*?? *open source* ? programmable retrofit display modules to replace the custom, older VFD , LCD, CRT & some LED display modules would certainly be helpful.
?
Fragile VFD vacuum leak, filament burnouts are increasing.
?
Vector CRT to LCD display replacements have been discussed, but are a challenge to implement
? ( long list of affected instruments: Hp 9100, Tek 576 CRT's,? ).
?
The HP 8665 (VFD) & the? Wiltron 6747b (LCD) ..... series? display issues are haunting.
?
?? - feel free to Add your favorite instrument model # display issue? !! ).
?
There are scattered examples of such replacement display module projects for older equipment on the Web, GitHub, etc.,
?-- but more needs to be done.
?
Not certain if there is a comprehensive List of available, successful display replacements? projects ??
?
?
?
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HP? 70911 CLIP / Circuit diagram the 100 Mhz wide IF unit
Looking for HP? 70911 CLIP / Circuit diagram the 100 Mhz wide IF unit ?
?
It is a unit that is part of the HP 70000 spectrum analyser system
?
Hopefully someone has it in either paper format or PDF ?
If only in Paper we could then arrange for it to be scanned for witch I will pay for
?
Regards Paul?
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Re: Thoughts on upgraded(?) replacement parts for vintage equipment
Already did the 5087A boards a couple years back.
The big problem with these boards was not the board, but the metal shield.
I never had that re-manufactured.
?
ed
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Jeremy Nichols
Michael A. Terrell
Harold Foster
Dave McGuire
Paul Bicknell