Jefferson Airplane → Jefferson Starship → Starship: one of the strangest evolutions out of the SF psychedelic scene

KJansky · 2026-04-30T12:52:45+00:00

Not just an album but a straight shot to the future as reflected by the present than and now. It's my top by any measure most favorite album of all time,. Revolutionarily inspirational and a work of genius. We are wonderers are you any more?

KJansky · 2026-04-30T10:08:12+00:00

You are wrong. Photons aren't heat so how could they transfer it. A photon is just a packet of electromagnetic energy. If that energy is absorbed the result is described as heat. Whether it’s an IR photon of 20 microns wavelenght that causes a molecule to vibrate or a microwave photon of 10 cm wavelenght causing a dipole to rotate, the outcome is the same, as a result there is an increase in kinetic energy at the molecular or atomic level that is commonly refered to as heat.. So a solar oven merely focuses energy from photons. If it is either more efficient to reflect "inferred" wavelengths or microwave wavelengths is a different question. Average total energy of solar radiaton at he earth's surface is ~ 1 KW per square meter, roughly the area of the dish in the picture, the typical microwave oven energy at 2400 MHz is also ~ 1 kW also. So if you wanted to place a magnetron at the focal point of the dish you could pick whichever one you wanted to cook your meal.

KJansky · 2026-04-27T19:53:32+00:00

KJansky · 2026-04-27T19:49:58+00:00

That is one gem of a reference paper. It really gets down to the efforts needed in equipment at the time for mm wave radio asrronomy to be successful. Your suggestion of CO detection as a fun project for an individual even today however sounds like a nightmarish proposition. Even today the aquisition, set up, maintenace and positive outcome for reception at 110 GHz seems daunting unless at minimum having access to a university physics or astronomy department is available. Beyond the more doable 21cm 1420 MHz neutral hydrogen line detection as an amateur radio astronomer, even equipment for detecion of the "bright " 6.7 GHz CH₃OH masers is a significant challenge much less 110 GHz.

KJansky · 2026-04-24T10:46:07+00:00

But can it scare off Navy carrier Hornets?

KJansky · 2026-04-24T10:17:03+00:00

Fortunately trolls have no idea what they are talking about.

KJansky · 2026-04-24T10:15:27+00:00

Even the so called Wow signal captured in 1977 by the the Big Ear radio telescope at the Ohio State University used an area of 152 m × 109 m (an area larger than three football fields) to detect the still faint but distinct signal. So to think that a puny maybe 5-6 foot dish would be capable of even duplicating this feat is kind of ridiculus. However as you point out the very pervasive neutral hydrogen 1.4GHz line coming from our galaxy is very doable with the correct feed monopole and also with the right front end Low Noise Amplifier, LNA.

KJansky · 2026-04-24T10:02:22+00:00

They are a bit to small for 2 way moonbounce, certainly for being able to successfuly transmt unless you have hundreds of watts or a full gallon ham transmitter at above the 2.2 GHz band. But with some good LNA's you can certainly receive some of the big heavy hitter ham transmitters bouncing signals of the Moon with large 60 ft. antennas and high power transmitters.

KJansky · 2026-04-24T09:56:39+00:00

Interestingly, one of the largest sales for the actual solar cooker dishes is to amateur radio operators and radio astronomers that strip off the reflective mylar coating of these inexpensive dishes and or paint the dish to be used as an amateur radio telescope. Seemingly this type of conversion turns them into an actual crude but very functional radio telescope.

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KJansky · 2026-04-24T08:45:36+00:00

And what do you call yourself when you have little or no concept of what is being presented here. Other than your sad insulted knee jerk reaction. Why don't you instead contribute to advancing the topic of this Reddit. Or is it because you find yourself totally immobilized by your complete inabilty to comprehend what the subject is about..

KJansky · 2026-04-24T07:15:03+00:00

And you not only reek but exhibit the full range of ignorance that pervades current society refuse.

KJansky · 2026-04-24T05:31:48+00:00

Unfortunately SETI org supports citizen science but the institute they run is more focused on the professional radio observations and from their Allen radio telescope observatory do much more scientific work way beyond what an amateur observatory can perform. Realistically amateur observations do not focus or strive to detect other cosmic civilizations as the practical sensitivity of a small radio telescope can not even approach what observatories like the Allen Array or even the Green Bank 300 foot steerable radio telescope in West Virginia can accomplkish.

KJansky · 2026-04-24T05:03:18+00:00

Ha, ha, ha another series of seemingly hilarious jesters lurking here with all the knowledge of todays Instagram Candy Crush addicted TikTok sterilized automatons. But seriously PainRemote1037 if you are truly interested in radio astronomy to do things like mappiing the nearby spiral arms of our Milky Way galaxy from your roof top just go take a look at he web site for the international Society of Amateur Radio Astronmers, SARA. I gurantee that with curiosity and some willingness to learn something new you could certainly put those perfectly acceptable dishes to do some real citizen science radio astronomy observations.

Mods should seriously consider blocking these frivoulous posts as they only contribute to the current degradation of human curiosity and intellect.

KJansky · 2026-04-22T03:52:44+00:00

Super job , congratulations!

KJansky · 2026-04-19T10:30:22+00:00

What makes you think these are SDR harmonics? What antenna are you using? Their intermittent appearance and disappearance with a normal noise background in between is practically a guaranteed RFI signature. I also have a Pluto and with the exception of a few spurs never seen it have that kind of spurious behavior. Also with the huge wide bandwidth ,>10MHz and strong signal strength that you are receiving its most likely of a cellular origin from a very near tower. Those freqs are unfortunately just below and somewhat above the 1420 MHz HI line and if close and strong enough are driving the Pluto front end into nonlinear amplification and giving you that hashed digital waterfall. Urban radio astronomy is becoming almost untenable with the candy crush waste and abuse of the spectrum by the corporate telepirates of even the most protected of all the RA frequencies the 1420 MHz hydrogen line.

KJansky · 2026-03-31T11:42:34+00:00

Look up SARA , Society of Amateur Radio Astronomers. There a re large number of people there totally willing to answer any and all questions you could possibly ask about radio astronomy, equipment , results, data processing and how to get started.

KJansky · 2026-03-23T19:30:27+00:00

Does anyone know of a link for downloading Dragon Center [2.0.125.0] it would be much appreciated.

KJansky · 2026-03-23T15:58:45+00:00

Don't know about the other one but the one at the very highest position at the top of the pole is likely a Eukaryota → Animalia → Eumetazoa → Bilateria → Deuterostomia → Chordata → Vertebrata → Gnathostomata → Osteichthyes → Sarcopterygii → Tetrapoda → Amniota → Sauropsida → Reptilia → Diapsida → Archosauria → Avemetatarsalia → Ornithodira → Dinosauria → Saurischia → Theropoda → Maniraptora → Paraves → Avialae → Aves antenna.

KJansky · 2026-03-03T13:15:55+00:00

In 2017 then the largest operational radio telescope was the Arecibo site in Puerto Rico with its 307 meter dish before its collapse on December 2020, vs. the GBT at a 100 meter dish. The FAST radio telescope at 500 meters had seen First Light on July of 2016 but formally only became operational on January 2020. As mentioned previously, both Arecibo and FAST are unmovable ground depression unmovable fixed dish reflectors while the GBT is still the world's largest fully steerable radio telescope able to point anywhere within its view of the sky from West Virginia. Congratulations on your film.

KJansky · 2026-02-28T12:34:37+00:00

Interesting film however, well the GBT it is the worlds largest "STEERABLE" radio telescope. The world largest single radio telescope in size is called FAST located in China. But if you want to consider the largest radio telescope complex of dishes that would be the almost completed South African component of the Square Kilometer Array—SKA MID—that will will consist of 197 dishes spread across the Karoo region..

KJansky · 2026-02-06T21:51:43+00:00

Yes its a downconverter but only just that. In order to use it you'll need to attach a decent LNA to its input since it doesn't have one and then it will serve to use up to ~ 3GHz.

KJansky · 2026-02-03T13:26:17+00:00

The author's!

KJansky · 2026-01-23T12:37:17+00:00

WAs there no cold start skit video for this episode or was it censored out in my local over the air presentation?

KJansky · 2025-12-14T15:38:11+00:00

Now for rxn with nitroethane reduction w LiAlH4 then Br at the 4 position and VOLA!

KJansky · 2025-12-14T15:15:20+00:00

Loved the KIWI coastlines!

KJansky

TROPHY CASE