Re: DIY 11667A Power Splitter, resistor placement?
You speak Japanese.? Computer programming is just another language.
Harvey
By
Harvey White
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#140186
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Re: DIY 11667A Power Splitter, resistor placement?
"Jared Cabot via groups.io" <jaredcabot@...>
writes:
Not a good excuse :)
Just take things one step at a time - no need to learn everything at
once. But make sure you're always
By
Matt Huszagh
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#140185
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Re: DIY 11667A Power Splitter, resistor placement?
Even if you haven't done as much school, you seem plenty smart to do this kind of thing, and we'll help.
I've been wanting to turn on openEMS and give it a whirl.
Maybe I'll try entering in openEMS
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John Griessen
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#140184
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Re: DIY 11667A Power Splitter, resistor placement?
Don't let that stop you from trying.? Your ideas are good, and as you have seen, there are always people here willing to offer suggestions, like how the "big boys" (HP and others) did it.? Learn
By
Jim Allyn - N7JA
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#140183
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Re: DIY 11667A Power Splitter, resistor placement?
Try this and KISS to start. Drawing attached. Butt the 3 connectors of you choice
together. Solder body to body. You can bridge the wide opening with brass shim.
Nip the center pin as far back as you
By
alan victor
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#140182
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Re: DIY 11667A Power Splitter, resistor placement?
I won't even be able to begin to know how to use any simulation software, especially needing scripts etc...
I'm nothing more than a highschool dropout domestic electrician who dabbled in BASIC 30
By
Jared Cabot
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#140181
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Re: DIY 11667A Power Splitter, resistor placement?
Open EMS is very good I teach it on university. A great alternative to paid software.
Ing. Patricio A. Greco
Taller Aeronáutico de Reparación 1B-349
Organización de Mantenimiento
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Patricio A. Greco
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#140179
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Re: DIY 11667A Power Splitter, resistor placement?
You can also model the launches with an electromagnetic wave simulation
software. I’ve used OpenEMS, which is free and will produce accurate
results if you give it an accurate input. Using this
By
Matt Huszagh
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#140178
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Re: DIY 11667A Power Splitter, resistor placement?
You will find that a significant limitation to performance is the launch to the resistors.
Assume the resistors are perfect. Set the connector launch to a simple model of series L and shunt C as there
By
alan victor
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#140177
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Re: 8506xA ECal modules and 89057A
I have an 85097 driving a 3.5mm F-F 1-26.5GHz module. I don’t have anything else to compare it to, but I could take high resolution pictures of the pcb. If you do the same, maybe we could figure out
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Ed Marciniak
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#140176
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Re: DIY 11667A Power Splitter, resistor placement?
Those splitter PCBs linked to have a serious flaw. They use 3 50R resistors when they should be 16.67R (Zo/3). If they can't get that right what confidence is there that the PCB impedance is
By
Robert G8RPI
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#140175
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Re: DIY 11667A Power Splitter, resistor placement?
I have just found these edge launch N connectors:
https://www.alibaba.com/product-detail/High-Quality-Edge-Mount-N-Type_1600340466579.html
Manufacturer
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Jared Cabot
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#140174
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Re: DIY 11667A Power Splitter, resistor placement?
The original splitters were made with discrete components without a PCB. To maintain a 50R system they are enclosed in a slpit block with machined cavities whose diameter matches the component
By
Robert G8RPI
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#140173
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Re: DIY 11667A Power Splitter, resistor placement?
Ok, now you all have me thinking about stripline on rogers material.... :D
I'm looking at RF resistors, and now wondering about wattage ratings.. Is this an important consideration? Assuming my most
By
Jared Cabot
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#140172
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Re: DIY 11667A Power Splitter, resistor placement?
On Sun, 12 Nov 2023, AMiTHA wrote:
OK, I've got to the resistors in that RLC D-1814.
Those are just 2 0603 resistors soldered fron the input N-type connector to
2 output ones.
However, the entire
By
Sergey Kubushyn
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#140171
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Re: DIY 11667A Power Splitter, resistor placement?
Correction, it's 1870A
[email protected]> wrote:
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AMiTHA
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#140170
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Re: DIY 11667A Power Splitter, resistor placement?
Hi,
Likely the tracking performance won't be flat above 500mhz, I would suggest
to use sma connectors, and and smd resistors. Why not look into Weinschel
1670A splitter. It's way cheaper, and gives
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AMiTHA
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#140169
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Re: DIY 11667A Power Splitter, resistor placement?
You just know the engineer just wrote "ALC" because it is painfully obvious (to him)...and then the writer had to look it up.? Unfortunately, "Ar" comes before "Au."? I am actually surprised that
By
Caesar Valenti
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#140168
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Re: DIY 11667A Power Splitter, resistor placement?
with three 16.7 ohm resistors, if one has a 50 ohm source, one 50 ohm load and 75 ohm load, the effective load on the source is about 55 ohms.
situation can come up where a 50 ohm power measurement
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Ed Marciniak
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#140167
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Re: DIY 11667A Power Splitter, resistor placement?
Yes, the label is a bit strange and it should really say automatic level control. It's Keysight's drawing that I've borrowed and I've seen them use this misleading label for ALC in another publication
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jmr
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#140166
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