If you are like me and sometimes forget if R=E^2/P or E^2P, this chart will help. Very useful.
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Wednesday, February 17, 2021
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Blogs and Websites and Groups
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Linux Mint, QRP, & C / C++ Compilers - Greetings: On the bench I'm studying PLL techniques using a sample & hold detector + VHF circuitry. Currently, I've got nothing to post RF-wise. Another...
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Re: How to calculate the output impedance matching circuit of a balanced Class E amp - 12 MOSFETs... If you are going to run, say, 45V @ 12A (as an example), you could use something like 3.5uH to 4uH of inductance, and I would use a 1000pF va...15 hours ago
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Perfect Gift or Holiday Read: Tales of a Vagabond DXer by Don Moore - Last week, I had the pleasure of posting the latest installment of Don Moore’s “Photo Album” series on the SWLing Post. Don has contributed numerous Photo ...18 hours ago
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6474km TEP contact on 144 MHz from Argentina to a ship off the coast of Florida - 9th Dec 2024 - Over the last few years, I've reported on many *Trans-Equatorial Propagation* (TEP) contacts from South America to the Caribbean on the *144 MHz* band......
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December 11, 2024. We take things for granted. - We often take things for granted! You know, you snap on your homebrew rig or appliance box, and it comes alive. Or that if you want a fresh salad, there is...
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Partial Restoration of a Vintage Tube Radio – the Westinghouse H-130 - It’s not too often that I post about projects which are incomplete, but this one has reached a stage where, although I’m not sure if I will fully finish it...
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MeSQUAREs alternative - 1/32" board - MeSQUAREs are excellent. I've purchased them from QRPme in the past and used them with great success. I get through them very quickly and find it a bit unf...
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New QRP Cluster From OM0ET and OM6APN - By DX EXPLORER DX EXPLORER Paul OM0ET and Peter OM6APN recently launched a new cluster dedicated to QRP operations. Have a look and I hope you will enjoy...1 year ago
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Other Electronic Projects • Re: Can I normalize both Mono Amp Outputs? - radm49 wrote: ↑ Mon Apr 25, 2022 3:56 am qmavam wrote: ↑ Thu Apr 21, 2022 8:57 pm Yes, you can use a wall wart for power, you might need to add a capacit...2 years ago
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Raduino as NBFM TX - Here is a neat, 30 minute hack for your Raduino to turn the Si5351 into a pretty stable, solid NBFM transmitter. The hack is to add a varactor diode in ...
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QRP Labs shop! - [image: Shop] All QRP Labs kits may be ordered online securely at the shop, with PayPal payment. *Click here to visit the shop!* *Click!* *Shop! Order...9 years ago
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E. Howard Armstrong on a Czech Stamp
Blog Archive
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February
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Radio Inventor Stamps
On Page 39 of the Nov-Dec 2024 SARC newsletter "The Communicator"
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