#hc22s
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n8dmt.mastodon.radio.ap.brid.gy
@hamchallenge HC22S #hamchallenge: Simulate an electric circuit. Used free LT-Spice to model a ~35W P-P RF power amplifier. Included a simple output graph showing dB gain of the circuit. Other possible simulations include input return loss, output match, time […]

[Original post on mastodon.radio]
Screen capture of the 10-30MHz RF amplifier simulation running in LT-Spice on the Win11 Ham PC. The upper portion is the simulation results showing gain decreasing slightly from 32.6 to 28.8 dB over the frequency range. The lower portion shows the schematic, including 4.2V bias network for the IRF510 devices.
March 31, 2025 at 4:01 PM
mcdanlj.social.makerforums.info.ap.brid.gy
One of my many simultaneous ongoing #hamradio projects are a set of bandpass filters. I forgot until now that my uSimmics work with various filters counts as @hamchallenge #hc22s — even though I haven't built them yet, I _have_ simulated them (and […]

[Original post on social.makerforums.info]
Schematic and simulation across HF bands for a 10m bandpass filter. Schematic and simulation across HF bands for a 20m bandpass filter
August 30, 2025 at 1:42 PM