vna | Homemade 30 MHZ - 6 GHz single receiver VNA design files
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Homemade 30 MHZ - 6 GHz single receiver VNA design files.
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QUESTION
I have a rich text document (.rtf) that has notes separated by dates. It follows the format below:
2021-4-6
Some notes
Hyperlink
More text
2021-4-5
Notes notes notes
I'd like to split the document so that there is a different file for each date with the corresponding notes saved and the date as the file name. The split command seemed close to what i wanted but it doesn't seem to be able to account for the variable amount of text and lines for each day. Would a bash script work for this? I'm new to this so forgive me if the answer is obvious. Edit: the document contains some leading spaces and blank lines.
An example input file:
2020-11-15
How to properly use a NanoVNA V2 Vector Network Analyzer (Tutorial) - YouTube - VNA NanoVNA
Impedence matching an antenna Reflection VNA vs Spectrum Analyzer? Usually impedence of 50 ohms VSWR Meter SWR - Standing Wave Ratio SWR = 1 means there is no reflected power
2020-11-11
Superheterodyne receiver - Wikipedia - A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. Protected Cell Unprotected Cell Logic Gates from Transistors: Transistors and Boolean Logic - YouTube -
Would be split into two files:
2020-11-15.rtf
2020-11-15
How to properly use a NanoVNA V2 Vector Network Analyzer (Tutorial) - YouTube - VNA NanoVNA
Impedence matching an antenna Reflection VNA vs Spectrum Analyzer? Usually impedence of 50 ohms VSWR Meter SWR - Standing Wave Ratio SWR = 1 means there is no reflected power
2020-11-11.rtf
...2020-11-11
Superheterodyne receiver - Wikipedia - A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. Protected Cell Unprotected Cell Logic Gates from Transistors: Transistors and Boolean Logic - YouTube -
ANSWER
Answered 2021-Apr-06 at 17:55awk to the rescue!
QUESTION
I have list of 3 dataframes of stock tickers and prices I want to convert into a single dataframe.
dataframes:
...ANSWER
Answered 2021-Apr-01 at 09:58I fixed it myself, here is what I did:
QUESTION
I have a list of parts that have a part code. I need to align columns B-E to match the list of numbers in column A, leaving blanks where the data has moved down. The number in column B should match the number in column A.
A simple sort will not do because ColumnB,D,E has fewer entries than ColumnA and some numbers in ColumnB are not in ColumnA.
A B C D E '005023 5025 oil-filler-level-plug-genuine-005025 GENUINE PIAGGIO, OIL FILLER PLUG. 1.5 '005024 5027 rear-hub-cone-shim-lambretta-005027 LAMBRETTA REAR HUB CONE SHIM. 1.25 '005025 5031 piston-s2-s3-524mm-125cc-gol-005031 ITALIAN MADE BY GOL 46.5 '005027 5032 exhaust-simonini-px-125-black-005032 135 '005029 5036 floor-runner-kit-vespa-px-125-200-005036 GOOD QUALITY, ITALIAN MADE, COMLETE FLOOR RUNNER KIT 25 '005031 5037 rear-light-grey-top-for-vespa-rally-005037 5 '005032 5038 front-hub-back-plate-chrome-005038 Suitable for all Lambretta S1 S2 S3 models 45 '005033 5041 clutch-plates-surflex-cosa-vespa-px-005041 TOP QUALITY ITALIAN COSA CLUTCH PLATES MADE BY SURFLEX. 16 '005036 5044 points-ducati-style-lambretta-005044 TOP QUALITY,CONTACT BREAKER POINT FOR LAMBRETTA 10 '005037 5045 condensor-ducati-dansi-li-sx-tv-gp-005045 DUCATI TYPE CONDENSOR FOR MOST LAMBRETTAS. 9 '005038 5047 panel-handle-lock-mechanisms-s1-s2-005047 TOP QUALITY, LAMBRETTA SERIES 1 & 2 SIDE PANEL HANDLE MECHANISM KIT. 41 '005040 5049 fork-push-rods-pistons-s1-2-3-005049 TOP QUALITY LAMBRETTA FORK PUSH ROD PISTON SET. 12 '005041 5050 fuel-tank-vespa-gs-160-180ss-rally-005050 100 '005044 5051 wheel-rim-chrome-10-inch-vespa-005051 TOP QUALITY, CHROMED WHEEL RIMS ( 1 X WHEEL ) 38 '005045 5052 carb-box-top-carbon-look-pe-px-efl-005052 VBB SPRINT GT PX 22 '005047 5054 input-shaft-needle-rollers-px-21-005054 ITALIAN MADE SET OF 23 INPUT SHAFT NEEDLE ROLLER BEARINGS 5 '005049 5055 air-hose-clips-19mm-series-2-carb-005055 LAMBRETTA SERIES1 AND 2 AIR HOSE CLIPS FOR STANDARD 5 '005050 5056 air-hose-vespa-vna-005056 6.5 ...ANSWER
Answered 2021-Mar-10 at 22:52Add a reference from the VBA editor (Tools -> References...) to Microsoft ActiveX Data Objects; choose the latest version, usually 6.1
Then you could write VBA code like the following:
QUESTION
For the function below, I would not add the noise (Inoise in the code below) in every time step but, for example, only in every second time step. So while dt=0.0025 serves as the time step for the numerical integration, I would, for example, add Inoise only in every second time step (i.e. in 0.005 steps).
What is the best way to insert this into my existing function?
...ANSWER
Answered 2021-Jan-16 at 22:49You could accumulate the elapsed time and only add the noise once enough steps have passed:
QUESTION
Using below AppScript to sending an auto email based on Google Sheet values but its not working.
I have changed the Column reference according to the current columns but its not giving an error but also not sending the email.
can someone please look into this matter.
Your help will be greatly appreciated.
...ANSWER
Answered 2020-Dec-20 at 08:15In your Spreadsheet, it seems that Your issue is the column "E". But columnSEND is 15 by var columnSEND = 15 of your script in your question. In this case, the if statement of if((dice[i][columnSEND-1]==textCONDITION) && (dice[i][STATUScolumn-1]!=textSENT)){ checks the column "O". I think that this is the reason of your issue.
So in order to check the column "E", as a simple modification, how about the following modification?
From:QUESTION
I have programmed a model in both C++ and Python. This model has a noisy-input component, which I can replace with this C++:
...ANSWER
Answered 2020-Dec-18 at 21:18You've messed up indents in the Python code. These lines
QUESTION
I explain briefly what the attached program code should do. We give a number of passes before runs = 100. and we give I = 10.
For example we set the area_factor = 1. Then the function HH_model(I,area_factor) does the following:
run 100 times with this I and this area_factor and return the number of times the barrier 60 is broken -- this is checked in the if max(v[:]-v_Rest) > 60 query.
Now I want to do the following: Determine that area_factor so that the number of count matches observations as well as possible. For example, I know from measurements
...ANSWER
Answered 2020-Nov-29 at 12:30The result of your line 126 is a three dimensional array with three times the same value. This size-3 array does not fit into an element of v, which has size-1 elements as you initialized them this way.
Therefore, you could add a [0]:
v[i + 1] = (vT + ((-IIon + IStim) / C) * dt)[0]
Furthermore, I think you do not need to allocate memory. You could for example use numpy.append in line 126.
QUESTION
I have a database for attendance, it works fine as long as the person does not work over 2 dates. I want to utilize IN and OUT system for records but I do not know how to do the final step, and what I saw on the forum does not work on MySQL or I am doing something wrong there. This is my database and queries are under. BTW Database is built using PHPmyadmin and MySQL Workbench.
...ANSWER
Answered 2020-Jul-08 at 08:45Assuming that:
- 1st record for each separate
emp_idis IN event - There is no lost events
QUESTION
I have an excel spreadsheet that has a column, with each cell filled with pages of data stripped from a database. In each cell, 1 or 2 serial numbers may be defined. There are three known formats of serial numbers: Starting with YV and are 10 digits long. Starting with VNA and are 8 digits long. Starting with SVNA and are 9 digits long. I need to extract every copy of every serial number in that column out to a separate cell. There may be 0, 1, or 2 serial numbers in each cell, and the copied information needs to be left blank, left with a single serial number, or left with 2 serial numbers separated by a comma and a space ("VNA1234A, VNAB4321").
I don't have any code to suggest because all code I've seen in this vein is to extract an entire known word, rather than a whole word or phrase based on a few letters.
Is there some way to do this?
I'd like the serial number VNA3FB00 from the text in the picture to be copied into the F cell to the left. And if there was another serial number, to have that copied as well.
...ANSWER
Answered 2020-Jul-06 at 12:44This could be done with a formula and access to TEXTJOIN (available in O365 and Excel 2019). In F2 the formula:
QUESTION
In my artificial problem, I need to remove empty values create during a sample process and make a new sampling process until I have just one value (nrow(s.df)>0). But, if the first condition is satisfied I keep the results (res[[i]] <- s.df) but if not, I need to make a new sample again and for this, I try to use repeat and while functions combining with else without success.
My example:
...ANSWER
Answered 2020-Jun-11 at 13:56You could put the while loop inside the for loop and make it depend on the outcome of the if-condition then you don't need the else:
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