Sphere's Stuff Season closes January 31st
Please drop by and have s look:
https://www.sphere.bc.ca/test/stuffday.html
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I have added some very cool design kit assortments int? e Surprises and RF sections, really
worth a look. The HP ones are incredibly RARE!
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We will close the page at month end, and re-build it for 2022, it takes about a month to refresh it all.
many items will disappear, and new ones will get posted. Now is the time to send me any special requests,?
we are happy to fill them if we can, as there's still TONS of stuff here at Sphere to clear out.
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Many thanks to everybody that has helped us clear out this inventory, Susan says THANK YOU!
all the best, and hoping for a better 2022 ahead,
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walter (walter2 -at- sphere.bc.ca)
sphere research corp.
https://www.sphere.bc.ca/test/index.html
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Re: 3325A Function Gen, where is the RMP test jumper?
Looking at the schematics in the 90002 manual, I did not see the ‘jumper’ or ‘shorting wire’ either. ? If needed, I can open my 3325A and take some pictures of my A14 board. ? Joe ?
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From: [email protected] [mailto:[email protected]] On Behalf Of J. L. Trantham
Sent: Sunday, January 02, 2022 12:05 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] 3325A Function Gen, where is the RMP test jumper?? What is the serial prefix of your 3325A?? What is the part number of your manual? ? I’ve attached pages 5-1 – 5-6 of manual 03325-90001 where there is no mention of ‘RMP’, only ‘shorting connector’.? 03325-90002 mentions RMP. ? Perhaps your unit is older and has wires as a ‘shorting connector’ instead of ‘jumpers’.? My unit has a number of wires as ‘shorting connectors’. ? Hope this helps. ? Joe ? From: [email protected] [mailto:[email protected]] On Behalf Of Jared Cabot via groups.io
Sent: Sunday, January 02, 2022 9:32 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] 3325A Function Gen, where is the RMP test jumper? ? On Sun, Jan 2, 2022 at 11:37 PM, Roy Thistle wrote: Maybe not... but, it looks to me....
Between U33 and U36 on A14 03325-68514 Rev C
... also it could be mistaken? as "AMP ADJ" because of bad? silk screening.
Just the same, "Designator" RMP is given in "Board Location" D ... and that's what's there. This one is a trimmer capacitor (C110) labelled RMP on the PCB, which is what I need to use for this jitter adjustment, but the location of the mentioned RMP jumper is proving somewhat elusive..
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Re: HP 8601A 100 kHz to 110 MHz Generator / Sweeper
On 1/2/2022 7:38 AM, Christopher Tucker via groups.io wrote: All,
I am looking for an hp 8601A Sweeper, specifically with OPT 007. Other options are welcome but I would like to keep the output impedance to 50 Ohms. Christopher, I have one that I'd be glad to get part with, late model, grey not blue case and with IEC power connector, 50 Ohm but no options that I can see.? It does not have the white numbers falling off the dial like most old ones have (see eBay pic). Also I replaced the incandescent bulbs for the decimal points with LEDs since the light pipes had darkened and the bulbs were not bright enough.? Works. Dan - ac6ao
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Re: 3325A Function Gen, where is the RMP test jumper?
What is the serial prefix of your 3325A?? What is the part number of your manual? ? I’ve attached pages 5-1 – 5-6 of manual 03325-90001 where there is no mention of ‘RMP’, only ‘shorting connector’.? 03325-90002 mentions RMP. ? Perhaps your unit is older and has wires as a ‘shorting connector’ instead of ‘jumpers’.? My unit has a number of wires as ‘shorting connectors’. ? Hope this helps. ? Joe ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Jared Cabot via groups.io
Sent: Sunday, January 02, 2022 9:32 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] 3325A Function Gen, where is the RMP test jumper? ? On Sun, Jan 2, 2022 at 11:37 PM, Roy Thistle wrote: Maybe not... but, it looks to me....
Between U33 and U36 on A14 03325-68514 Rev C
... also it could be mistaken? as "AMP ADJ" because of bad? silk screening.
Just the same, "Designator" RMP is given in "Board Location" D ... and that's what's there. This one is a trimmer capacitor (C110) labelled RMP on the PCB, which is what I need to use for this jitter adjustment, but the location of the mentioned RMP jumper is proving somewhat elusive..
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Re: HP 8601A 100 kHz to 110 MHz Generator / Sweeper
That particular one is not Option 007, but looking at the schematic, it doesn’t appear to be complicated, just bring out the link to BNC connectors.
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Dave Wise
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From: [email protected] < [email protected]>
On Behalf Of Mike Feher via groups.io
Sent: Sunday, January 02, 2022 9:28 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 8601A 100 kHz to 110 MHz Generator / Sweeper
?
Here you go –
?
73
– Mike
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Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ 07731
848-245-9115
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All,
I am looking for an hp 8601A Sweeper, specifically with OPT 007. Other options are welcome but I would like to keep the output impedance to 50 Ohms.
I am contemplating a recreation of the spectrum analyzer "lazing in the grass" with the 141S Display Section, as illustrated in the August 1968 edition of the Hewlett-Packard Journal.
Any advice or experience to share with this setup is also welcome.
Christopher Tucker
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Re: HP 8601A 100 kHz to 110 MHz Generator / Sweeper
Here you go – ? 73 – Mike ? Mike B. Feher, N4FS 89 Arnold Blvd. Howell NJ 07731 848-245-9115 ?
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From: [email protected] < [email protected]> On Behalf Of Christopher Tucker via groups.io Sent: Sunday, January 2, 2022 10:38 AM To: [email protected]Subject: [HP-Agilent-Keysight-equipment] HP 8601A 100 kHz to 110 MHz Generator / Sweeper ? All,
I am looking for an hp 8601A Sweeper, specifically with OPT 007. Other options are welcome but I would like to keep the output impedance to 50 Ohms.
I am contemplating a recreation of the spectrum analyzer "lazing in the grass" with the 141S Display Section, as illustrated in the August 1968 edition of the Hewlett-Packard Journal.
Any advice or experience to share with this setup is also welcome.
Christopher Tucker
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Re: HP11758B Digital Radio Test Set
Hey Roy
I searched Keysight but it was for the 11758b, not V? but I now have that V document and it seems to have the information, THANKS!!
Yes, I only have one piece of the set but I have some other Spectrum Analyzers I can use for the signal source for setup.? It is a shame that set pieces are separated and sold/ distributed.? I have a few power meters all without the sensors, prices are ridiculous on many sell sites for "parts" only sensors.??
Thanks, Stephen for the manual # offer, if I find I need more I will contact you
David
VE6RKT
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Re: YTO from 8595E in 8561E
Hello!
I was place 5086-7903 YIG into my 8561E instead of bad 5086-7906 and made YTO adjustment procedures from service manual.
There is no errors after reboot, but I can see signals till 2.89GHz only.
Can anoyone tell me please what is wrong?
Best regards,
Roman.
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HP 8601A 100 kHz to 110 MHz Generator / Sweeper
All,
I am looking for an hp 8601A Sweeper, specifically with OPT 007. Other options are welcome but I would like to keep the output impedance to 50 Ohms.
I am contemplating a recreation of the spectrum analyzer "lazing in the grass" with the 141S Display Section, as illustrated in the August 1968 edition of the Hewlett-Packard Journal.
Any advice or experience to share with this setup is also welcome.
Christopher Tucker
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Re: 3325A Function Gen, where is the RMP test jumper?
On Sun, Jan 2, 2022 at 11:37 PM, Roy Thistle wrote:
Maybe not... but, it looks to me....
Between U33 and U36 on A14 03325-68514 Rev C
... also it could be mistaken? as "AMP ADJ" because of bad? silk screening.
Just the same, "Designator" RMP is given in "Board Location" D ... and that's what's there.
This one is a trimmer capacitor (C110) labelled RMP on the PCB, which is what I need to use for this jitter adjustment, but the location of the mentioned RMP jumper is proving somewhat elusive..
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Happy New Year's Wishes...
Gang,
Please accept our wishes for good health and much contentment in the new year.
Burt, K6OQK
--
Burt I. Weiner Associates
Broadcast Technical Services
Glendale, CA 91201 U.S.A.
K6OQK
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Re: HP11758B Digital Radio Test Set
On Sun, Jan 2, 2022 at 05:30 AM, Dr.-Ing. Stephan Massner wrote:
So I'm able to give you a list of all docs and required accessories.
From his message... the OP... seems to want to use the 11758B as a "as a programmable pass filter" ... Do you know if the 11758B can do that? On the other hand... these microwave analog and digital 'radio' test sets turn up ( as skip pulls? ) invariably sans the SA and power sensors. I sometimes see people asking astronomically stupid prices for the 'test set' parts. But, what can you do with an orphan 11758B, without an SA (with tracking) and and a power sensor? (which are all the expensive bits.) For the older ones, the relatives of SKs... just want you to break your back dragging them out of the basement.
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Re: 3325A Function Gen, where is the RMP test jumper?
On Sun, Jan 2, 2022 at 12:02 AM, Jared Cabot wrote:
Does anyone know where this jumper is?
Maybe not... but, it looks to me....
Between U33 and U36 on A14 03325-68514 Rev C
... also it could be mistaken? as "AMP ADJ" because of bad? silk screening.
Just the same, "Designator" RMP is given in "Board Location" D ... and that's what's there.
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Re: 3325A Function Gen, where is the RMP test jumper?
Good question. Just checked my copy of the manual and there seems to be no prior mention of it. Can see C110 - the adjustment cap - but that is all.
T.
Hi all,
I'm currently adjusting a 3325A and on page 5-5, section 5-16 Ramp Stability, it says to remove the 'RMP test jumper'.
Now I'm probably blind, but I can't find any other mention of this jumper in the manual, and it's also not shown in figure 5-3 that shows the locations of all the other adjustments.
Does anyone know where this jumper is?
Thanks!
Jared
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Re: HP11758B Digital Radio Test Set
Hello David,
we've such a DRTS in our lab - (11758B+11758A power sensor
kit+8593A+accessories) as well as all related documentation. Due to our move
into the new lab this stuff has been packed and is waiting for shipping.
The 11758A power sensor kit is specified up to 18GHz but can be used above
with less accuracy.
Within the next 4 weeks we're changing our lab-location. Then, all the stuff
has to be prepared for further usage. May you remind me in 8 weeks via PM,
please? So I'm able to give you a list of all docs and required accessories.
Best regards,
Stephan
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On Samstag, 1. Januar 2022 22:24:22 CET you wrote: Hey All, Happy New year.
I am making my first post a request for information,sorry. I have a 11758B
DRTS probably from part of the 11758V multipath simulator package but I am
at a loss of finding an operations manual on this unit itself, I have the
11757B manual(s) but not much information on the other unit. I was hoping
I could use this as a programmable pass filter as it seems to be able to be
set up that way but punching buttons and hoping to make it do things is not
working well.
Any good links anywhere? Been over to the BAMA site but no luck
Thanks David
VE6RKT
--
Your sincerely,
Dr.-Ing. Stephan Massner
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Re: HP11758B Digital Radio Test Set
On Sat, Jan 1, 2022 at 01:35 PM, David Buhler wrote:
I have the 11757B manual(s) but not much information on the other unit.?
Hi VE6RKT:? It isn't clear to me... but since, you only mention 11757B and 11758V... I believe you are looking for a 11758V manual? Anyway, a pdf of the 11758V "User's Guide" is on the Keysight Website.
The 11758B is supposed to be used with a 8593E SA ... to make up the Digital Test Set "system" (Some of the functions will be in the 8593E SA [like bandpass?] )
The test set supposedly has a programmable notch filter that can be swept through the IF bandwidth of a receiver. I think you use the SA to see where the signal drops.
Best regards.
Roy
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3325A Function Gen, where is the RMP test jumper?
Hi all,
I'm currently adjusting a 3325A and on page 5-5, section 5-16 Ramp Stability, it says to remove the 'RMP test jumper'.
Now I'm probably blind, but I can't find any other mention of this jumper in the manual, and it's also not shown in figure 5-3 that shows the locations of all the other adjustments.
Does anyone know where this jumper is?
Thanks!
Jared
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Re: 8753D Unwrapped Phase
On 1/1/22 2:15 PM, Dr. David Kirkby, Kirkby Microwave Ltd wrote: No, I don't think there's a direct way of doing it. I would consider two
options. I've only ever done the first, but the second should work too.
1) Export the Touchstone file to external software, such as the VNWA.
2) If the phase changes approximately linearly with frequency, you could
apply a port extension and then work out the true value based on the port
extension and the measured value.
If you only want a qualitative, not quantitative idea if something like a
filter is showing a linear phase response, just look at the line after the
port extension. I'm actually doing this to measure some transmission matching line lengths as part of a transmit combiner. As it stands I'm having issues measuring lengths 180 degrees on this VNA. Perhaps I need to buy a newer one that supports this :-) Actually this brings up my next issue. I've calibrated the VNA full two-port using your N-cal kit. In s11 mode after calibration at 460 mhz with nothing connected to the port, I see +7.2 degrees, which would say I'm 3.6 degrees before my reference plane, but even with the female open cal connected to the male N port, it's still about 2.5 degrees shorter than the supposed reference plane. This seems off to me. I'm measuring a two port coupling assembly, with two female N's on it. When measuring the length I'm seeing about a 2 degree difference between s11 and s21. This seems like a large error to me. Is there a better way to do this? -- Bryan Fields 727-409-1194 - Voice
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I think it’s more like an ink-jet printer.? IIUC, the machine energized the meter, sensed how far the pointer deflected, and squirted a mark.? Repeat.
It was a photo plotter.
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Re: Agilent 83732B and 8657B Synthesized Gen
I'm glad the FCC First ticket lasted long enough for me to pay
for college with it! Babysitting an AM daytime radio transmitter
was hardly even work, but it paid the bills for me.
-bill
On 1/1/22 1:22 PM, Stuart Landau via
groups.io wrote:
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A very sad commentary on the state of education and
perhaps on our society.?
I have worked in broadcasting for the better part of 60
years and there are very few young people in the technical end
of this necessary occupation. It is interesting, it can pay
very well, and hopefully will be around for a long time.?
People with RF experience are few and far between. Most
successful transmitter/RF people started off as amateur radio
operators, as I did.
The loss of the FCC First Class Radio Operators License in
1985, initiated by the National Association of Broadcasters,
started this downward process.
Book learning is fine and is necessary, but at some
point, you need to get your hands dirty. There is a lot of
satisfaction working with a 110 kW FM signal on top of a
mountain and serving the Southern California community.
Stuart Landau
Chief Engineer
KPFK 90.7
Los Angeles
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Christopher Tucker
Jared Cabot
Burt K6OQK