Mike Fikes

ClojureDart REPL

Occasionally it hits me that normal houses don't just randomly have test gear lying around the kitchen.

Aligned notch knob

One easy tweak to the Penntek TR-45L I’m going to try is aligning the notch knob so that your own side tone is notched out when the knob is vertical. Left is as-shipped, right is modified.

@janetacarr Perhaps of interest is that ClojureScript would tend to achieve the same via the code generation associated with macros (see blog.fikesfarm.com/posts/2015-12-…), but more recently the compiler has been using intrinsics to ensure optimal JS is generated inline for certain core functions.

#Clojure supports this metadata key called :inline You supply a macro-looking thing called a function template it puts your template in place of the var With a benchmark hard to tell if worth the effort tho Now I want to write a hacky Clojure program only using inlines 😅

Effective notch filter in the Penntek TR-45L youtu.be/MdH5Ny5Np1w

Looks like the Penntek is 5 Hz low (I haven’t let it warm up)

Nice 1 ms attack / decay when keying

Nice CW into 50 Ω load.

Seems to be accurate at 2 W, measuring 10 V.

Should actually be closer to 7 V… maybe something is off a bit

Measuring the TX power of the Penntek TR-45L. At minimum, 36 mV into 50 Ω, or -16 dBm. And a smidge below 8 V when the rig indicates 1 W, which checks out.

@AlanAtTek You hooked me into this world with the PL-386. I could understand the SSB, but not the other strange noises.

@mfikes It’s definitely a fun rig!

Fun new toy. Called by ⁦@AlanAtTek⁩ W2AEW on it yesterday.

Just barely able to copy slow CW on air now. In this case only realized I had copied valid CW after reviewing what I wrote down. :)

In celebration of being in the App Store for 10 years, we are making Literacy Leveler free today. fikesfarm.com/litlev/

Fascinating book about Morse code

Practicing more Morse on back deck with perfect weather

My latest video is a short review of the @peakatlas DCA Pro, Model DCA75, with brief comparisons to common low-cost testers and a traditional curve tracer: youtu.be/cWqeyn17Vac

Getting some CW practice in while letting a beta of @joulescope run