As the original poster of this thread, I did not meant this to be political in nature.听 I just wanted to debunk this shoddy reporting before it caused undue worry. 听 I'm sorry, I should not have used the term "fake news" since it was obviously not faked, but instead was just poor or lazy reporting.听 ABC 7 did eventually correct the article.
Needless to say, this was a shock to all of us that work there.听 We had no other source of news since the entire area is blocked off.听听 I refused to believe this article and fortunately was proven right.听 Our CEO also had to deal with this inept news report:听听
Sadly, I know way too many people that lost everything.
|
Re: Found a on line auction selling several HP items Oct 26 end date
Same experience. Shipped an 83712 from NY to CA. Had them pack it. Glad I insured it. Face plate smashed in.听
Pictures of it on the counter @ the UPS store will make the claim easier.听
听
On Wed, Oct 18, 2017 at 9:31 AM, <cggaul@...> wrote:
> I was looking for some Ham equipment and found a Kansas City based Online auction listing several HP Items.
>
>
> They will arrange shipping!
Sort of:
"For shipping, we work with a local UPS franchise. They will pickup
your items the week following the sale and contact you directly to
discuss shipping options and costs, and then you will pay them
directly."
My experience is that UPS store packing is very expensive, but also
completely ineffective at protecting the contents :(
Highly disrecommended.
|
Re: FS: HP Jornada palmtop computers
Hello,
can I buy these for my retro show?
They will NOT be mistreated, promised!
---
With best regards
Tam HANNA (emailing on a BlackBerry PRIV)
Enjoy electronics? Join 6500 other followers by visiting the Crazy Electronics Lab at Am 18. Oktober 2017 17:58:52 MESZ schrieb "Brad Thompson brad.thompson@... [hp_agilent_equipment]" :
听
Hello--
I'm offering the following HP small (palmtop) computers and accessories.
One HP Jornada 720 with one expansion base: Includes stylus and original
battery (needs replacement). This unit boots when connected to an
external power source.
Two HP Jornadas 820 (F1260A): both include original batteries: one has
a broken right-side screen hinge, the other is mechanically intact.
Both units boot when
connected to an external power source.
One HP 820 sync cable (untested).
One HP F1265 AC adaptor (12 VDC @ 3.5A) in working order (supplies
power to HP720 and HP 820.
One 16 MB Compact Flash card with HP 820 user's manual and
other files.
I'm asking $25.00 for the lot of all items, which includes USPS
Priority-mail
shipment (a $13.60 "value") for shipment to U.S. locations.
(These palmtops may have had test-and-measurement
applications, but it's unlikely. I apologize in advance to anyone who
takes umbrage at my offering these little jewels to the group.)
Question welcomed, PayPal honored.
73--
Brad AA1IP
|
FS: HP Jornada palmtop computers
Hello--
I'm offering the following HP small (palmtop) computers and accessories.
One HP Jornada 720 with one expansion base: Includes stylus and original battery (needs replacement). This unit boots when connected to an external power source.
Two HP Jornadas 820 (F1260A): both include original batteries: one has a broken right-side screen hinge, the other is mechanically intact. Both units boot when
connected to an external power source.
One HP 820 sync cable (untested).
One HP F1265 AC adaptor (12 VDC @ 3.5A) in working order (supplies
power to HP720 and HP 820.
One 16 MB Compact Flash card with HP 820 user's manual and
other files.
I'm asking $25.00 for the lot of all items, which includes USPS Priority-mail
shipment (a $13.60 "value") for shipment to U.S. locations.
(These palmtops may have had test-and-measurement
applications, but it's unlikely. I apologize in advance to anyone who
takes umbrage at my offering these little jewels to the group.)
Question welcomed, PayPal honored.
73--
Brad AA1IP
|
Re: Found a on line auction selling several HP items Oct 26 end date
On Wed, Oct 18, 2017 at 9:31 AM, <cggaul@...> wrote: I was looking for some Ham equipment and found a Kansas City based Online auction listing several HP Items.
They will arrange shipping! Sort of: "For shipping, we work with a local UPS franchise. They will pickup your items the week following the sale and contact you directly to discuss shipping options and costs, and then you will pay them directly." My experience is that UPS store packing is very expensive, but also completely ineffective at protecting the contents :( Highly disrecommended.
|
Found a on line auction selling several HP items Oct 26 end date
I was looking for some Ham equipment and found a Kansas City based Online auction listing several HP Items.听
They will arrange shipping!
HP-8640B:听听
HP-8657A:听
HP-3325A:听
HP-652A:听
HP-334A听
HP-8640B:听
73
|
Re: Request for E4406A CLIPs (was Re: E4406A Input Attenuator)
Hi
There are 听relased clip for the rf unit and the fan controller
boards.
At keysight forum it were promissed that the 听rest would be
relased soo-so it exist at keysight!
Tony--please contact me.
Hardy
听
Fra:
hp_agilent_equipment@...
[mailto:hp_agilent_equipment@...]
Sendt: 17. oktober 2017 16:37
Til: hp_agilent_equipment@...
Emne: [hp_agilent_equipment] Request for E4406A CLIPs (was Re: E4406A
Input Attenuator)
听
听
Just to help clarify on Alexander's request - This is a
completely different repair from the one I've been working on (still not
complete unfortunately) and he's just asking for the CLIPs if anyone has them.
I only have the RF one but I think he needs the Front Panel
& Power Supply ones if they exist.
Alexander - It occurs to me now that you might not be able
to get one for the power supply as a lot fo these were purchased from 3rd
parties and HPAK never had the schematics to start with.
|
HP 3586B LSB/USB sideband tone
I have the subject receiver and have noticed lately that the LSB has a higher pitch than the USB.听 I assume one of the BFO听crystals has drifted in frequency.听 I looked at the manual and don't see an adjustment.听 I guess I might be able to add a variable cap to pull it one way or the other.听 I had also seen someone who used a DDS to generate the appropriate frequency.听 I am very familiar with DDS and programming but would prefer to use a crystal.听
Can I get a new crystal?听 Should I try to pull it back into alignment?听 Use the DDS听and its concomitant phase noise and spurs?听 Thoughts?
thanks.
Jerry
|
Re: 5342A: blown sampler?
Hi, Your measurements with the diode mode suggest the sampler is OK, digital meters don't use the same amount of current to test resistance as older analogue meters and that's the reason you didn't get their readings.
I agree with Steve, you may need to replace a number of the 1826-0371, either on the A8 main VCO, A4 offset VCO or both.
I'd also check the A5 output to see if you're getting drive to the sampler driver and then check the sampler driver A26 itself.
I'd check in that order, check the VCOs are outputting signal, check the A5 to ensure it's outputting a signal to听A26 and it should alternate between the two VCOs, then check A26.
To check the sampler driver A26听you really need a听spectrum analyser. As most spectrum analysers have a capacitor (DC block) in the front end you need to terminate the A26 module with 50 Ohm and then measure what you see across that with the spec an, if you see lots of harmonics then all is good. You will not see anything听(apart from the 325MHz drive) without a dc return for the step recovery diode.
If the A26 is not working that could either be the SRD or it could be U1 on the A26 module - I have seen faulty U1 ICs in the past, most likely due to heat - they run very hot.
For the 1826-0371, you can buy fakes/replicas/copies off ebay or do what I do, I make a small smd pcb with 2 x 2sc3356 transistors, 2 x 100 ohm resistors and a 120 ohm resistor in the emitter lead听(all smd components)听with pins to fit in the DIP footprint. You'll see the schematic for the 1826-0371 on a number of the 5342A schematics. I've not had any issue with my made up boards yet.
If you find it is U1 on the A5 module I can also give you an alternative circuit for that but it is not quite optimised yet 听and听requires short leads to minimise parasitics.
Good luck Greg
|
Re: 3585B Spectrum Analyzer
One thing you can try on contact fingers is a white eraser - usually works pretty well at removing oxidation
On Tue, Oct 17, 2017 at 10:33 AM, ve3poa@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
听
Hi Dave,
So far I've been using contact cleaner for the contacts and basically just giving them a bit of a rub.听 To the eye it all looks pretty clean but you never know.
Your experience is encouraging. We shall continue on.
Peter
ve3poa
|
Re: 3585B Spectrum Analyzer
Hi Dave,
So far I've been using contact cleaner for the contacts and basically just giving them a bit of a rub.听 To the eye it all looks pretty clean but you never know.
Your experience is encouraging. We shall continue on.
Peter
ve3poa
|
Re: HP 8640B troubleshooting, no AM modulation
If you can control the output level with the Vernier knob, that eliminates many suspects, because it uses the same control paths as modulation.
听
Dave Wise
听
toggle quoted message
Show quoted text
From: hp_agilent_equipment@... [mailto:hp_agilent_equipment@...]
Sent: Tuesday, October 17, 2017 4:24 AM
To: hp_agilent_equipment@...
Subject: [hp_agilent_equipment] HP 8640B troubleshooting, no AM modulation
听
Needed my HP 8640B for troubleshooting some radio equipment after 2 years of not using it. Ended up with troubleshooting the听HP 8640B first.
The RF output is not being modulated in AM (don't know about FM) from the internal source. I have no audio source to test the external AM modulation input but likely that will not work either..听
Checked the signal AM output socket and that is fine on 400 and 1000Hz and the level can be adjusted as expected. The meter gives normal readings as well .
The RF output has a very faint 1000 Hz modulation of perhaps a few % dept with the level all the way up and on 400 Hz no modulation at all. The RF settings and output听 are fine.
Any ideas where to look?
Thanks, Nico
听
|
Re: HP 8640B troubleshooting, no AM modulation
锘�
Hi Nico there are many ways of producing an
external mod source. We all get used to having a standard piece of HP gear for
the job. .......but for instance a comms rx with a xtal calibrator will produce
a tone on the speaker terminals which can be fed to the ext mod socket on the
8640. Ok the impedances may not be optimum, but it is enough to determine if the
int mod source has failed or whether the modulation stages are to blame.
听
Having said that my experience is that a fault like
this (fail after storage) is usually听a psu fault probablt an electrolytic
(or maybe a tant) failing. It may be worth investing in a cheap mechanical time
switch and running the gear up for a couple of hours every day even if not in
use. Smoke detector advisable
听
:-))
听
Alan
G3NYK
听
----- Original Message -----
Sent: Tuesday, October 17, 2017 12:23
PM
Subject: [hp_agilent_equipment] HP 8640B
troubleshooting, no AM modulation
Needed my HP 8640B for troubleshooting some radio equipment after 2
years of not using it. Ended up with troubleshooting the听HP 8640B first.
The RF output is not being modulated in
AM (don't know about FM) from the internal source. I have no audio source to
test the external AM modulation input but likely that will not work
either..听
Checked the signal AM output socket and
that is fine on 400 and 1000Hz and the level can be adjusted as expected. The
meter gives normal readings as well .
The RF output has a very faint 1000 Hz
modulation of perhaps a few % dept with the level all the way up and on 400 Hz
no modulation at all . The RF settings and output听 are fine.
Any ideas where to look?
Thanks, Nico
听
|
Re: E4406A Input Attenuator
All the same, let's hope that someone will have the other schemes...
Alexander
|
Request for E4406A CLIPs (was Re: E4406A Input Attenuator)
Just to help clarify on Alexander's request - This is a completely different repair from the one I've been working on (still not complete unfortunately) and he's just asking for the CLIPs if anyone has them.
I only have the RF one but I think he needs the Front Panel & Power Supply ones if they exist.
Alexander - It occurs to me now that you might not be able to get one for the power supply as a lot fo these were purchased from 3rd parties and HPAK never had the schematics to start with.
Hope you get it fixed.
TonyG
|
Re: E4406A Input Attenuator
Hi All.
In the continuation of the repair of our E4406.... I have a problem with the听front panel control听and the PS unit. The听repairing听experience of measurement instruments already exists, but there are no E4406 schemes.听While I found only RF unit clip.听Can someone help with the others听clips?
Alexander
|
Re: 8901B Power level zeroisation
Just coming back to the question 搘hat does percent mean for FM?�, the manual says: 揟he calibration factor will be displayed as a percentage. This percentage indicates the relationship between the HP 8901Bs measurement and the actual output of the Calibrator. (For example, a calibration factor of 100% indicates that the measured value is exactly the same as the calibrator output value. Likewise, a calibration factor of 100.17% indicates that the HP 8901B is measuring .17% above the Calibrator抯 actual output.)� TonyG Sent from Mail<> for Windows 10 From: Dennis Czelusniak czelusniakd@... [hp_agilent_equipment]<mailto:hp_agilent_equipment@...> Sent: Tuesday, October 17, 2017 5:29 AM To: hp_agilent_equipment@...<mailto:hp_agilent_equipment@...> Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation Peter, When FM Measurement is selected, the display will show peak deviation. The steps are outlined in the OP Manual under Section III Operation, Getting Acquainted. Dennis -------------------------------------------- On Mon, 10/16/17, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote: Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation To: hp_agilent_equipment@... Date: Monday, October 16, 2017, 10:11 PM Ok, so that worked, but what does percent mean for FM? kHz deviation would be more useful. Peter On 10/6/2017 9:25 AM, Dennis Czelusniak czelusniakd@... [hp_agilent_equipment] wrote:
E1 is invalid key sequence if calibration is pressed while not in AM or FM. 8480 series sensors work with your unit, high priced 11722A not required. If you have option 10, connect calibrator output to input, select AM, push calibrate and wait, takes about 20 seconds, do the same with FM, display reading will be 99.0 to 101.0%
Dennis
-------------------------------------------- On Fri, 10/6/17, matt.ames7bc@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject:
[hp_agilent_equipment] 8901B Power level zeroisation To: hp_agilent_equipment@...
Date: Friday, October 6, 2017, 2:57 AM
Hi all, I have an 8901B here that I use to measure power with, using the internal power detector and *not* the fancy external 11722A sensor. When I have nothing connected to the input, and I press the zero key, I get an Error 21.
Does anyone know what I am doing wrong, and how to zero the internal power level sensor?
Cheers,
Matt
------------------------------------ Posted by: Peter Gottlieb <hpnpilot@...> ------------------------------------ ------------------------------------ Yahoo Groups Links Traditional (Yahoo! ID required) hp_agilent_equipment-fullfeatured@... [Non-text portions of this message have been removed]
|
Re: 5342A: blown sampler?
Hi Tobias,
Do check out Azure, it鈥檚 a good site! I have a couple of 5342A parts units and should have a good sampler and other bits.
toggle quoted message
Show quoted text
On Oct 17, 2017, at 2:31 AM, Steve A starmux64@... [hp_agilent_equipment] < hp_agilent_equipment@...> wrote:
听
Hi Tobias Check out听 as it may help. Regards Steve
听
Hi all,
one of my other projects I'm working on is a 5342A which does not count on the high frequency input.
I checked the sampler according to the service manual. I used a 34401A for the resistance meausrement and got 22k in forward bias and >3M in reverse bias. This is quite different from the values stated in the service manual; however, when I look at the schematic,
I think it should be possible to test the sampler with the diode test function. I did that, and I found out that in forward bias, I have approx. 0.4 volts, and reverse bias is open. So it looks like a pretty nice diode. However I cannot compare to other samplers,
and the service manual also tells that the resistance measured can vary greatly if not exact 1mA measuring current is used.
Does that sampler look good to you guys, or is it probably broken? because if it is broken I think it makes no sense to invest additional time to fix things.
Tobias, HB9FSX
|
Re: 8901B Power level zeroisation
Peter,
When FM Measurement is selected, the display will show peak deviation. The steps are outlined in the OP Manual under Section III Operation, Getting Acquainted.
Dennis
--------------------------------------------
toggle quoted message
Show quoted text
On Mon, 10/16/17, Peter Gottlieb hpnpilot@... [hp_agilent_equipment] <hp_agilent_equipment@...> wrote:
Subject: Re: [hp_agilent_equipment] 8901B Power level zeroisation
To: hp_agilent_equipment@...
Date: Monday, October 16, 2017, 10:11 PM
Ok, so that worked, but what does
percent mean for FM?听 kHz deviation would be
more useful.
Peter
On
10/6/2017 9:25 AM, Dennis Czelusniak czelusniakd@...
[hp_agilent_equipment] wrote:
>
>
>
E1 is invalid key sequence if calibration is pressed while
not in AM or FM.
> 8480 series sensors
work with your unit, high priced 11722A not required.
> If you have option 10, connect calibrator
output to input, select AM, push
>
calibrate and wait, takes about 20 seconds, do the same with
FM, display
> reading will be 99.0 to
101.0%
>
> Dennis
>
>
--------------------------------------------
> On Fri, 10/6/17, matt.ames7bc@...
[hp_agilent_equipment]
> <hp_agilent_equipment@...>
wrote:
>
> Subject:
[hp_agilent_equipment] 8901B Power level zeroisation
> To: hp_agilent_equipment@...
> Date: Friday, October 6, 2017, 2:57 AM
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Hi all,
> I have an 8901B here that I use
to
> measure power with, using the
internal power detector and
> *not* the
fancy external 11722A sensor.
> When I
have nothing connected to the
> input,
and I press the zero key, I get an Error
> 21.
> Does anyone know
what I am doing wrong,
> and how to zero
the internal power level
> sensor?
> Cheers,
> Matt
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
------------------------------------
Posted by: Peter Gottlieb <hpnpilot@...>
------------------------------------
------------------------------------
Yahoo Groups Links
Traditional
听 听 (Yahoo! ID required)
听 听 hp_agilent_equipment-fullfeatured@...
|
HP 8640B troubleshooting, no AM modulation
Needed my HP 8640B for troubleshooting some radio equipment after 2 years of not using it. Ended up with troubleshooting the听HP 8640B first.
The RF output is not being modulated in AM (don't know about FM) from the internal source. I have no audio source to test the external AM modulation input but likely that will not work either..听
Checked the signal AM output socket and that is fine on 400 and 1000Hz and the level can be adjusted as expected. The meter gives normal readings as well .
The RF output has a very faint 1000 Hz modulation of perhaps a few % dept with the level all the way up and on 400 Hz no modulation at all. The RF settings and output听 are fine.
Any ideas where to look?
Thanks, Nico
听
|
bownes