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Re: Hi all..have a question on a source for micro-grabber clips (smd size)
So, mouser has a set of 10 for $3 each: Curious why these might not work for your needs.and the ones I referenced earlier are under $0.70 per unit, so they would seem to be under a dollar each delivered in quantities. On Mon, Mar 2, 2020 at 2:26 PM Randy Newman <randy.n.at.home@...> wrote:
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Re: Hi all..have a question on a source for micro-grabber clips (smd size)
Similar clips are Pomona 5301-6, or 5419-8-0 (ignoring the wire). On Mon, Mar 2, 2020, 12:15 AM Orin Eman <orin.eman@...> wrote:
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Re: WTB HP 8660C Module Extension Cables 11672
Sorry, I cannot find your direct address ( testtech@... ???) : I have for sale the two extender cables, p/n 11672-60001 and 11672-60002 for the 8660x signal generator series (with the original box ! ). Regards. JF On Monday, March 2, 2020, 07:41:18 PM GMT+1, Bob Koller via Groups.Io <testtech@...> wrote: I wish to buy the Service Kit p/n 11672A, or the two extender cables, p/n 11672-60001 and 11672-60002 for the 8660x signal generator series. Please contact me off list if you have something for sale. Thanks, Bob |
Re: HP3336b
There were some RF connectors that looked like the RCA phone connectors, except that the center pins were shorter, used in General Electric mobile radios, up to 460 MHz. I would assume that there were pretty well matched.?
Until the SMA connectors were available, at reasonable prices, there were many small RF connectors in use. Many were quite expensive. At that time there was very little standardization. The precision TNC connectors work well above 10 GHz and are still commonly in use for higher power microwave use.
There are versions of the SMA that are designed to be used to 26 GHz, but generally the less expensive ones are OK only to 18 GHz. The 3.5 mm and 2.92 mm versions are designed to work at even higher frequencies (to 40 GHz).
SMB and SMC families still are in common use.
Stuart K6YAZ
Los Angeles, USA
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Re: yet more hp CRTs for stuff day
On 2020-03-02 3:34 PM, walter shawlee wrote:
Further to the list I posted, I went to our offsite storage unit, andI'm looking for a CRT to restore an HP Storage 1331A XY. The original part # was 5083-2578 but I don't know what compatibility with other tubes is like. If anyone has a copy of the 1331A operator's / service manual, I'd be interested, because the online copy is poor quality. --Toby plus 2090-0384 (Toshiba) E9054B31 |
Re: Need E5515C help on mods and features
On 3/2/20 4:04 PM, walter shawlee wrote:
The E5515C series is in fact discontinued, not current.That must be a recent thing; I got an upgrade for my C to an E about two years ago. (for actual cellular development work) the options specifically say that other frequency coverage is possibleMaybe. But why not just get a real spectrum analyzer and signal generator? Just sayin'.. -Dave -- Dave McGuire, AK4HZ New Kensington, PA |
Re: Need E5515C help on mods and features
walter shawlee
The E5515C series is in fact discontinued, not current.
the options specifically say that other frequency coverage is possible (270-1300Mhz at least), I am trying to find out how to do it. the docs are not especially helpful in this regard. looks like maybe option 3 can do at least some of it, but I have no idea what that involves. I thought there might be a group dedicated to modifying this box as there is for other hp items, as it has some great functionality, including an SA. -walter-- Walter Shawlee 2 Sphere Research Corp. 3394 Sunnyside Rd. West Kelowna, BC, V1Z 2V4 CANADA Phone: +1 (250-769-1834 -:- +We're all in one boat, no matter how it looks to you. (WS2) +All you need is love. (John Lennon) +But, that doesn't mean other things don't come in handy. (WS2) +Nature is trying very hard to make us succeed, but nature does not depend on us. We are not the only experiment. (R. Buckminster Fuller) |
Re: Need E5515C help on mods and features
On 3/2/20 3:26 PM, walter shawlee wrote:
I got one of these (working) off ebay, with option 2 (2nd generator),Not necessarily; these are current (or very nearly current) analyzers. I don't know if there's any way to expand the range. This is a cellular test device; it's very tightly tailored for, well, you know, cellular testing. I will never understand why people keep trying to repurpose stuff like this to be general in nature when they're not. also, any actual hardware manuals exist for this?? the keysight stuff isThere are hundreds of manuals for the E5515 series of analyzers, but no hardware information at all. -Dave -- Dave McGuire, AK4HZ New Kensington, PA |
yet more hp CRTs for stuff day
walter shawlee
Further to the list I posted, I went to our offsite storage unit, and found another big pile of HP CRTs, including many new ones.
the additional ones include (all prefix 5083):? -4454, (2) -5152 storage, -3552, -4531, -9010? specan, 3976 NIB, -2570 storage, 9083 NIB, -5793 NIB, -4052, -3932,? plus 2090-0384 (Toshiba) E9054B31 I am posting ll the info on stuff day here:? and this year you can get items remotely, without coming to sphere, for your convenience. I hope these CRTs can help somebody restore their favorite HP item. also happy to swap for other HP items, like MSIB cables, accessories for the my 8753A, etc. all the best, walter? (walter2 -at- sphere.bc.ca) sphere research corp. |
Need E5515C help on mods and features
walter shawlee
I got one of these (working) off ebay, with option 2 (2nd generator), and would like to expand the RF coverage range. I understand there is an option for this (I have no use for the cell features), and would like to go lower in frequency.? is this a hardware thing, or just a software patch to enable the range change?? if so, how can I do it?
Is there a user group or discussion thread on this like there is for the E7495 (an amazing bit of portable technology) that I can go to?? is there a way to back up the hard drive or replace it?? this one has to be pretty old now. also, any actual hardware manuals exist for this?? the keysight stuff is very modest is this regard. any and all help greatly appreciated, this is a nice looking piece of hardware. all the best, walter (walter2 -at- sphere.bc.ca) sphere research corp. |
HP-5354A, Schottky Diode 1900-0023
Hello all,
just joined the group. My second HP piece is next to me, a 5345A with a 5354A plugin. The 5345A seems to work fine, but the plugin doesn't. My investigations are now on the A1 mixer. I opened it and I found a broken input C1 and a missing CR1, 1900-0023. Hmm, up to now I'm not able to find any information about this diode except that it is a schottky diode. Has anyone information about this diode? Possible replacement? Any pointer is appreciated. TIA, Andreas |
Re: [WANTED] HP 85700A 32kB RAM card
At 2020-03-02 08:56 AM, Mark Litwack wrote:
On the screen issue, try the display centering adjustments on the second page of the CAL menu. Thank you, I was hoping for something like that. Unfortunately, that doesn't solve the problem. Moving the display down just moves the cut line down with it - the top half of the row with the hp logo is cut off, along with the entire first row with the date and time. If that doesn't help. over-scan and centering problems can also be caused by the wrong sync.? For that, check the third page of the CONFIG menus.? There's a button there called DEFAULT SYNC to reset the sync settings to NRM (normal) mode which are best for the internal CRT. My page 3 has only a DEFAULT CAL DATA? entry. When I press that, text pops up at the left edge of the 3rd row of the graticule saying "PASSCODE NEEDED". The picture below shows what was captured by KISS-488 pretending to be an HPGL plotter. Interestingly, the error text (I had been entering bogus commands via Telnet) is not shown at all on the captured screen, but the hp logo (plotter commands, not text) and the date / time above it are shown correctly. |
Re: sick hp 5421A Digital Processor
On 2/23/20 3:53 AM, ChrisBeee via Groups.Io wrote:
With the help of Dave and one of his NIM bins, one of my beauties, aIt's true that the interests on the GammaSpectroscopy list are mostly about gamma spectroscopy measurements and materials, and less about the instrumentation. The common focus on using PC sound cards for data acquisition really makes me twitch, that's for sure. I do quite a bit of that sort of stuff here (NOT using PC sound cards); my interest in that area is more in the instrumentation side of things than most people on that mailing list. -Dave -- Dave McGuire, AK4HZ New Kensington, PA |
Re: sick hp 5421A Digital Processor
On 3/2/20 2:46 PM, ChrisBeee via Groups.Io wrote:
just in case my e-mail reply to your kind offer ended in your spamYup, I've been nonfunctional due to painkillers following a small oral surgical procedure. I should have that info for you by tomorrow. -Dave -- Dave McGuire, AK4HZ New Kensington, PA |
HP 5347A with 8482A Power Sensor?
Hello group. Wondering if anyone has tried using the 8482A power sensor with the 5347A. It is the only sensor I have.
Power ranges are the same but not the frequency range so clearly cannot measure above 4.2 GHz (accurately). Assume I would not damage anything... but does the 5347 work properly or complain? Apparently only designed for: 8481A (or D), 8484A and the 8485A. Thanks! Mark |
Re: HP3336b
To quote Wikipedia, as just one example....
"An RCA connector, sometimes called a phono connector or (in other languages) Cinch connector, is a type of electrical connector commonly used to carry audio and video signals.", so, yes, one and the same device, just take your pick.
Unfortunately though, and whether or not you consider it to be an oxymoron, that fact remains that these same connectors, or something so physically similar as to be indistinguishable, have been widely used on American hobby and commercial radio equipment as antenna connectors and/or internally.
I won't bother to quote names as this is common knowledge and the list is so extensive.
I'm not suggesting they are widely used as RF connectors on HP equipment but that is certainly what HP used for the internal coaxial interconnects on the 3336 series, which is where we came in, and I suspect, though don't know for sure, that other similar products such as the 3325 might also use them internally.
Nigel GM8PZR
?Re: HP3336b
From: Raymond Domp FrankDate: Sun, 01 Mar 2020 09:07:43 PST On Sun, Mar 1, 2020 at 12:01 PM, Nigel wrote:
In general terms I could never understand why the American electronics and radio industry, from hobby level all the way through to military, embraced these so universally as RF connectors, although I suspect cost would have been a significant factor.What type of connector are you referring to? Apart from the fact that "RF phono" seems an oxymoron to me, I am not aware of HP widely using low-cost connectors. Are you talking about RCA/cinch connectors? |
Re: A dirty way to get more frequency resolution out of a signal generator
This will probably work but you would need a counter to verify the output signal is what you are expecting.
There is no guaranty that a low resolution generator will be able to hold steady on digits it cannot even display. --Victor |
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