#book

His father was one of the founders, he inherited. I think he has three PHDs, too. So he knows RF.

A list of my 15 contacts with Dr. Rohde.

Dr. Ulrich Rhode. I met him in 1986 at an RF Technology seminar, nice guy. We were interested in RF simulation software. He had just bought Compact Software and was answering questions of attendees. Much later I ran across him on ham radio, made 15 contacts.

#rf #radio #hamradio

When he did this, I was hoping he'd burst into flame. Made me wonder if that was a real bible.

Superb! I also hold to the tenant "Anything can be an antenna". And the NanoVNA is a joy to use.

Image of an F1 rocket engine, 1.5 million pounds thrust at sea level. This one is missing it's 'skirt' and is dented in spots. Some oxidation due to age and being outdoors. About 55 years old.

Apollo memories - F1 engine on display at the Cosmosphere in Hutchinson Kansas

#space #science

Nice read, semi-parallel universes.

#books

My three year old son at a vic-20 computer keyboard, smiling up at the camera. Picture taken about 1982.

Found this picture of my son, 1982. The first computer in our house.

#vic-20 #commodore #familypix

#Books #BookSky #BookChallenge

Western entrance to Flaming Gorge.

#Parks #nature #photography

I think I love the house more than the characters.

#BookSky 🪐📚💙

Currently reading. So far, good.

A single engine airplane in a graveled parking lot. The landing gear is collapsed, the wings have broken at the cabin joints. Two people are neat the engine, looking. A third heavyset man is approaching, cartoon bubble is texted "Oi! You can't park here, mate."

I took the pic 12/31/2016
Small plane lost engine power after take off. The pilot managed to glide to an empty parking lot next to a school. Hero!

He did suffer a back injury. And lost his homebuilt plane.

#aircrash #parking #humor #lol

This design was driven by needs more than aesthetics. Had to be made by hand, handle enormous power and be relatively safe. The large upper bulb is there to cool the vapor, with condensate running back down to the pool in the bottom. Oh, and UV light was also a by-product.

Picture of a blue-green glowing glass bulb with six large diameter wires attached to it's electrodes. About 1.5 meters high, pool of mercury in the base. All in an explosion containment room.

This is a mercury vapor three phase rectifier for a broadcast transmitter, about 250kW. I saw similar in a local TV station, down in it's basement back in 1967. Spooky,

#electronics #radio #hamradio #oldschoolcool

I've been a bad ham. No HF contacts since 03/31/23. COVID-19 wiped me out, almost permanently. Still haven't rebuilt the station. Soon though.

1976 - this was my work bench. Messy.
But I had to work on anything Midland ever sold. CB, Ham, VHF Marine FM, test gear, CCTV, home and car stereo.

#nostalgia #electronics #Midland

Looking at my Yaesu FT-70dr, I couldn't help thinking 'This radio is about the same size as just the microphone on my ancient Motorola 80D'. That was 1950s LMR surplus, trunk mounted, drew about 40 amps on TX and would dim my car lights, engine running!

How things have changed.
#hamradio #LMR

#books Series I like - lonestar51.blogspot.com

Perfect! Did you ever get the final plate to glow?

Finale YouTube video by Danny Elfman - Topic

One of my favorites, from #Batman. Composed by #DannyElfman, 'Finale'. I still get chills from the crescendo in brass, Trumpets ascending, bass descending. Just awesome.
#music #movies
youtu.be/ahqYJl-MEPM?...

#hamradio #tubetech
I was a ham in 1969, novice. Rigs used tubes. Robust tubes. No need for a Z-matcher, it was built in. Life was good. Now it's all transistor, and SWR protection circuits in modern rigs will shut off TX at the slightest hint. I think many have trouble because of this.

#hamradio RW antennas please me. Cheap, robust, work fine.
Z on them runs from 35 to 2200 ohms. My Z-817 has a 6:1 range. With a 9:1 balun a RW is easily matched unless at series resonance. Even then its about 1.5 : 1.

#hamradio
2017 - Returned to ham radio after a long hiatus. Researched rigs and got a Yaesu FT-817 for QRP. All mode, all HF bands. Added an LDG Z-817 for ant matching. Then a simple 9:1 balun and a random wire antenna. Went to a local park, ran a RW antenna. First HF QSO! (NC)
18,000+ QSOs since.

Old memory I had - www.facebook.com/share/p/1BFL...

#hamradio

A QRP rig, an ATU, 9:1 balun and a 29' or 81' wire. On the air!

Peave Warning:
I'm tired, bored of folks shoving their gender and gender preferences in my face.
I. Don't. Care. Got it?
Same thing about race.
None of it matters.
Take those items from the lexicon and the world gets better.

Nothing in particular, just slow growth. I know I'll never 'Win' but the trip is entertaining. Do you have a goal(s)?

33K/2 is what I get.

Screen grab of Circuit Maker schematic and analysis graphs.

#circuits #electronics

Amplifiers I have known.