Panel mount scheme for 128 x 32 0.91" OLED?
Has anyone found an easy way to fit these displays to a panel?? They are small, simple to use and provide a good size display, but have no mounting holes and there is only about 3mm at either end of
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[email protected]
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#1861
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Re: Heterodyne RF generator
Reg, Interesting idea. It would require a tracking passband filter as frequency is sweeped, to select the desired harmonic. But I fear you should need to have selected the 15th harmonic in the range
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Daniel Ricardo Perez
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#1860
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Re: SCPI Command Parser Firmware For Instrument
FWIW 30 years ago I wrote a parser using lex and yacc that ran in production for 8-9 years without a single bug report. It would take some revierw work to do that now, but is there isn't a solution
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Reginald Beardsley
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#1859
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Re: Heterodyne RF generator
Daniel,' As you have an Si5351 I'd like to suggest examining using a fast (e.g. Potato Chip) TTL part with sub 1 ns rise time to increase the harmonic content to over 1 GHz, filtering the unwanted
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Reginald Beardsley
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#1858
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Re: Heterodyne RF generator
Daniel, My mother used to say my father carried a pair of Vise Grips in his pocket to squeeze the pennies and I was the same way until I was in my mid 60s. I literally spent years pondering how to
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Reginald Beardsley
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#1857
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Re: Heterodyne RF generator
Hi Daniel, Couple suggestions that may help your project I second the QRPLabs Ultament U3 plus low pass filters for GPS local oscillator and or rf sweep generator Along with a common diode es dc meter
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John Kirby <n3aaz_qrp_1@...>
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#1856
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Re: Heterodyne RF generator
Hello, if I - a fellow old coot - can help by forwarding components from Hungary or Slovakia, let me know. 100g of Components, tracked, from SK is like 5USD shipped. Might beat customs Tam
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Tam Hanna
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#1855
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Re: Heterodyne RF generator
Reg, thank you for your interest on my topic! I am an old man too (66), I saved as much money as I could too, but the economic situation on my country is bad and I need to keep working after having
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Daniel Ricardo Perez
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#1854
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Re: Heterodyne RF generator
Daniel, A sweeper is of no use without a receiver of some type. An explanation of your intended use case would be very helpful. My first suggestion for building one would be to use a pair of AD4351
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Reginald Beardsley
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#1853
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Re: Origins of nanoVNA & tinySA [was: Heterodyne RF generator]
I'm quite aware of the history of the nanoVNA, edy555, Hugen's part and Erik's part. The clone problem is very acute because of the low cost, high performance and popularity. I focused on Erik because
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Reginald Beardsley
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#1852
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Re: Origins of nanoVNA & tinySA [was: Heterodyne RF generator]
Reginald, for the sake of accuracy, Erik designed the tinySA, inspired by the nanoVNA. The nanoVNA itself was originally designed by eddy555, a Japanese Radio Amateur, whose design was then adopted &
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G8DQX list
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#1851
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Re: Heterodyne RF generator
Phooey. Hit the wrong button. Here are sweeps of the 40 m LPF using a pair of tinySAs and a nanoVNA H4. I have 3x tinySAs and a nanoVNA H and nanoVNA H4. The reason for having so many tinySAs is as
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Reginald Beardsley
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#1850
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Re: Heterodyne RF generator
Hi, Daniel, My first post here also as I just found the list. I strongly recommend a tinySA or nanoVNA H4. Just make sure you don't get a clone. So check the [email protected] list for legit sellers.
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Reginald Beardsley
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#1849
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Heterodyne RF generator
Hi, I am LW1ECP, this is my 1st post. I love to design and build anything at home, my main limitation is lack of time to make solder smoke. I'd like to build a sweeper for my home bench. I have an
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Daniel Ricardo Perez
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#1848
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Re: EMI filtering on power cord
For anyone who wants the complete picture on RFI filtering, and in particular the proper application of ferrites, here is the reference: http://www.k9yc.com/RFI-Ham.pdf Gary NA6O
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Gary Johnson
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#1847
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Re: EMI filtering on power cord
Hi Goran Clamp-on ferrites work as well as the solid ferrite beads, but one big problem has always been the price factor. These look cheap enough to use, even though they're more than twice as much as
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Jim Strohm
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#1846
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Re: EMI filtering on power cord
Sounds good. Good luck. Ross Sent: Friday, August 04, 2023 10:52 AM To: [email protected] Subject: Re: [Test Equipment Design & Construction] EMI filtering on power cord
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si_emi_01
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#1845
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Re: EMI filtering on power cord
Further thanks to all that pitched in. As usual, a side conversation at least as interesting is unfolding. On my side of things, I've grabbed a box of assisted clamp-on ferrites from AMZ (can be had
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Radu Bogdan Dicher
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#1844
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Re: EMI filtering on power cord
It's okay. We're good here. Thanks, Ross
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si_emi_01
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#1843
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Re: EMI filtering on power cord
It is based on Pyvisa. I personally use it with a Keysight USB-GPIB interface (would need to dive under the equipment table for the partnr) Wilko
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Wilko Bulte
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#1842
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