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Re: Remember TV Test Patterns?

Posted by JohnL on Tue Oct 9 21:54:14 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Tue Oct 9 21:42:12 2007.

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As far as I can determine (from much reading of the Apollo Lunar Surface Journal), the contractor was Westinghouse.

It’s difficult to determine which bit of Westinghouse was responsible for the cameras, since the name has had such a varied history.

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Tue Oct 9 21:59:14 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Tue Oct 9 20:12:19 2007.

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Color wheel had to be as least twice as large of the kinescope diameter......so cabinet for a 14" could have accomodated a 30" kinescope. The technology after the RCA system was not lost, used for medical video cameras. After Mercury B/W spacecraft television transmissions there was a demand for more color TV. Sony system 'Trinitron' where a kinescope had just one electron gun and camera had just one vidicon had yet to be implemented. NASA could not apply a three vidicon camera aboard the Gemini spacecraft due to size and power requirements so they used the CBS 'colorwheel' in face of a B/W vidicon......translation time to NTSC took seven seconds beyond transmission time so that what you saw and heard had to be adjusted for a mixed-delay.

First color TV transmission coast to coast of record was by AT&T in 1928 with President of US. It was a Nipkow disk system using a colorwheel on multiple telephone wire lines.

Look up 'Early Television.com' as if it up and running had a few examples of the equipment and transmissions like Baird and Jenkins. I'm still looking for the first video players on the internet...they used a 78RPM record AFSK modulating a special neon bulb with a Nipkow disk reflecting into a ground glass screen.

BTW: My mother wrote up all the AT&T order circuits for PICTUREPHONE including those at the 1963/64 Worlds Fair on isolated circuits....took eight twisted pair lines for one video....they were outside of the AT&T nationwide coaxial network that was used for TV.

TV was always live until AMPEX introduced the 2" videotape...changed everything. BBC was one of the first users...they taped 'Dr. Who' and discovered they could erase and re-record...losing early broadcasts.

PROJECT JENNY RULES........'Good Morning VietNam.' Peter, ex HF engineer, WB2SGT

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Tue Oct 9 22:10:46 2007, in response to Re: Remember TV Test Patterns?, posted by JohnL on Tue Oct 9 21:46:11 2007.

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Oh yeah ... and the invention of "synchroguide" helped a great deal. Some of the early 1950's TV's were absolutely horrible in both respects. Back then, they Harry Zontalhold control was on the FRONT and got tweaked as much as everything else. :)

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Tue Oct 9 22:13:49 2007, in response to Re: Remember TV Test Patterns?, posted by JohnL on Tue Oct 9 21:54:14 2007.

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My understanding was that the cameras were RCA ... sometimes the primary contractor was a reseller ...

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Re: Remember TV Test Patterns?

Posted by Karl B on Tue Oct 9 22:25:08 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Tue Oct 9 21:06:19 2007.

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I think you missed the key word which was radio.

You talked about being older, so I was asking you about the radio show starring Brace Beemer.

Those were the days when Cheerios was Spelled Cheerioats!

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Re: Remember TV Test Patterns?

Posted by Kew Gardens Teleport on Tue Oct 9 22:42:52 2007, in response to Re: Remember TV Test Patterns?, posted by JohnL on Tue Oct 9 20:55:53 2007.

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YES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

And then the other end of the day with the globe and the national anthem...

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Tue Oct 9 22:43:43 2007, in response to Re: Remember TV Test Patterns?, posted by Karl B on Tue Oct 9 22:25:08 2007.

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Heh. I'm up there, but not QUITE thatup there. And the answer was affirmative to radio, mentioned the TV version only because we actually got the films. There was also Amos and Andy, Fibber McGee (my pops was one of the contributing writers at WEAF) and many more though that all started falling by the wayside in the mid 50's ...

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Tue Oct 9 23:01:25 2007, in response to Re: Remember TV Test Patterns?, posted by BIE on Tue Oct 9 21:09:32 2007.

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Sarnoff had problems with the 'Iconoscope' with poor resolution and sent Vladimir Zyorkin to Philo Farnsworth for a 'wassup.' What Sarnoff did with 'Radio Manufacturing Company of America' was to purchase up every patent in radio for control.....you came up with a new idea and belayed by a patent....the RCA radios had a back label with dozens of patents. Major Armstrong was his first victim with the regenerative receiver....Sarnoff owned DeForest patents. Major Armstrong developed FM transmission and established the 'Yankee Network' in the range of the six meter band....like 52 to 56 Mc. and fought him for patent rights.....Armstrong commited suicide from the stress but his widow won....nothing. Farnsworth as NOT defeated and when the pedecessor of the the FCC said, 'The NTSC standard will be 525 line resolution with 60 cycle AC lock and 15,750 cycle scan sync' sucessfully sold key patents to Sarnoff/RCA. Took a while to get toobs to work this. Making UHF TV to work after the war when the spectrum was scambled.....was a whole another project because of cost....UHF tuners had no 'front end' using a broad band diode mixer in a down conversion scheme.

I don't write stuff like this up from reading internet seaches. In 1974, Sarnoff Jr. was dumping non-electronic units like car rental (Hertz), carpet (ABC) and RCA Institutes (originally founded by Marconi to train radio operators). I know this stuff from 'hands on' and so does Selkirk TMO and Peter Dougherty. I'm an RCA/TCI graduate.

I need to put my classic Yaesu FT station on the air and bake those 572Bs. I'm working hard cut overtime...there is no money available for a Icom IC-7000 'wonderbox' but maybe a few dollars for Newtronics 6BTV from HRO....I can build the most spectacular HF arrays on eight acres but cannot be left unattended due to weather...a 6BTV on a fold-over mount made from discarded S/S mountings (from sander program...out of dimension specs) is the easy way to go. Check out the 7272 Ragchew net and if you speak to 'Loby' WA2AXT tell him you heard from the 'Hurricane.' He'll know.

Mom passed away Last October 12th. More hard cut time. Peter, WB2SGT

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Tue Oct 9 23:03:22 2007, in response to Re: Remember TV Test Patterns?, posted by Fred G on Tue Oct 9 07:17:27 2007.

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Is that the 'Hickok' pattern?

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Tue Oct 9 23:58:15 2007, in response to Re: Remember TV Test Patterns?, posted by tracksionmotor on Tue Oct 9 23:03:22 2007.

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Monoscope - painted pattern on an aluminized picture tube. Another RCA "invention" to save the cost of a camera to pick up a slide ... iconos and orthicons were too expensive to spend time burning in a fixed image. Hickok was the "gated rainbow" (barf) ... :)

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Wed Oct 10 00:13:22 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Tue Oct 9 20:01:33 2007.

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I'm not going to compete with you for being 'aged'......but I designed and built FSK RTTY comm systems...and had a fight with the airline bring back a Kleinschmidt teleprinter from DAYTON HamVention in...1975, I remember a special oscilloscope used for color TV subcarrier alignments...you could buy one in a kit from HeathKit...'Vector Alignment Scope.' Never did TV work.....I aligned RGB monitors with video game picture AFTER Degaussing. Was I ever surprised how the Earths magnetic field changed the picture after rotatating the chassis! How was the vector scope used?

Thinking.......3.5795452658.....am I close? I learned Morse Code through practice bullitens transmitted by W1AW on 3.58 using a direct conversion receiver zeo beated to leaked color burst oscillators from neighbors TV sets. When W1AW went on the air, Signal Corps headset would 'ring' with 800 cycle note......'time to learn the code.'

Tough to be 'aged'......real ham and real commercial operator that took the real FCC tests before a real examiner downtown...FINKELSTEIN. What commercial operator today knows operation and maintainance of a lead-acid battery dynamotor system? What extra class ham operator today can figure out plate current/screen-grid current to tune out a final adjusting for an odd antenna impeadance/wet noodle antenna?

Aged: I have to show 'methods engineer' how to drop a arc chute and manipulate contactor physically after cutting out batteries....TOD flagged the APS contactor as 'stuck on.' Contactor was free and worked everytime with application of shop stud providing 75VDC through APS. Contact with third rail brought up a five month old TOD flagging a non-existent problem.

I get no breaks respecting my being 'aged.' I don't drink coffee with 'aged' beans nor eat 'aged yogurt' lost in my Refrigador! I'm still running around trainzzz as an 'aged' CI...three hours O/T today!

'Aged' means that you have not met 'the first mistake that could be your last.' RRCI Peter

'If they knew how much I loved the work they'de try to make me work for free.' Train Dude

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Re: Remember TV Test Patterns?

Posted by Karl B on Wed Oct 10 00:37:24 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Tue Oct 9 22:43:43 2007.

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Other than The Lone Ranger I think my favorite radio show was The Lux Radio Theatre where they dramatized popular movies of the day.

Our whole family listened to the Lux Radio Theatre together, at 9PM on Monday nights.

I don't know how to explain it, but radio had something that TV never had. I think it was that you could hear the sounds, but you had to picture the scene in your own mind. It made you think.

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Re: Remember TV Test Patterns?

Posted by Spider-Pig on Wed Oct 10 01:19:18 2007, in response to Remember TV Test Patterns?, posted by Mitch45 on Tue Oct 9 06:59:23 2007.

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Yes. I remember it like it was only yesterday. If yesterday were Monday, April 23, 2007.

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Re: Remember TV Test Patterns?

Posted by Spider-Pig on Wed Oct 10 01:21:05 2007, in response to Re: Remember TV Test Patterns?, posted by AMoreira81 on Tue Oct 9 08:19:17 2007.

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WNET still does it once a week but the cheap bastards don't bother to play the national anthem.

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Wed Oct 10 01:27:20 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Tue Oct 9 23:58:15 2007.

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Per FCC regulations, hams had limited transmission bandwiths. Before slow-scan frame video in a AFM format (shortwave), there was 'spot scanners' that placed a transparancy between a kinescope and a photomultiplier tube...you could transmit a single NTSC frame on the UHF bands. It would be many years before affordable vidicon cameras availed hams for TV.....the TV receiver format is identical to NTSC and slightly modified TVs with preamps. One evening I received a UHF TV repeater underneath the Brooklyn Bridge thinking it was TV Pirates until I heard ham callsigns.

'Spot Scanner' was TV engineering staple....unlike a 'monoscope' you could change the image by changing the tranparancy without burning in an image into an expensive tube....Hickock manufactured a unit that looked like a toob tester you could drop a slide into for a B/W image. There was nothing digital in those dayzzzz.....test pattern including an 'Injun' was straight analogue.....monoscope had everything built in including a fixed test image.

Hickok produced one of the first color bar generators....a 'gated rainbow'.....not a NTSC color bar pattern....but far better than anything not yet available to adjust color convergence.

BTW: Don't knock spot scanners. In post war TV, programming not live was on motion picture film using 'chain film scanners' that encoded image into analogue video for transmission on AM vestigial sideband and audio for FM transmission....AM and FM combined into a diplexer.....YOU should know that better than me! All that violent video we grew up with...Gas House Gang, East Side Comedy, Abbot and Costello, THREE Stooges....were all film chain transmissions. I did radio repair for ABC local news when cameras were motion picture film and they had a fleet of Harley Davidson motorcycles with press permits.

Just before my Dayton trip I discovered the Olympus OM-10 I bought my mom. There ia film in it. At Dayton I got a Olympus 135mm lense...I should have bought the 50mm macro too but did not. Problem is that I used to shoot off 36s but it could be a 24....don't know which way to turn!


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Re: Remember TV Test Patterns?

Posted by Spider-Pig on Wed Oct 10 01:33:53 2007, in response to Re: Remember TV Test Patterns?, posted by orange blossom special on Tue Oct 9 09:30:04 2007.

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Those weren't good times, what if you needed to buy something?

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Wed Oct 10 01:50:09 2007, in response to Re: Remember TV Test Patterns?, posted by Karl B on Wed Oct 10 00:37:24 2007.

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Shep Rules..........EXCELCIOR. Ovaltine produces visions.....stuff was awful and never tasted 'chocalaty' as promised. Thank God I grew up with a small grey screen!

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Wed Oct 10 02:36:31 2007, in response to Re: Remember TV Test Patterns?, posted by JohnL on Tue Oct 9 21:46:11 2007.

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Outer Limits

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Wed Oct 10 02:38:02 2007, in response to Re: Remember TV Test Patterns?, posted by JohnL on Tue Oct 9 21:39:24 2007.

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Go back through the posts I've made....

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Wed Oct 10 03:37:13 2007, in response to Re: Remember TV Test Patterns?, posted by tracksionmotor on Wed Oct 10 00:13:22 2007.

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Ah, the wonderful world of DC propulski ... as obsolete as variable capacitors in a varactor world. :)

Vectorscopes are used to set the burst level, phase and amplitude of chroma ... the burst is the little tick there at 270 degrees, and the objective is to align the amplitude and phase of the chroma signal so as to hit the smallest boxes perfectly from a "split field color bar signal" as follows:


A split-field color bar signal looks like this and produces the above:


An improved color bar set to the "EIA with pluge" as shown above is called "SMPTE Color bars" which adds a nicely generated additional set of reverse bars in a slice which looks like this:


A vectorscope will present them similarly, but because of the reversed colors in the stripe, will show amplitude distortion as well which causes the vectorscope to display curvy transitions as opposed to the straighter transitions and indicates nonlinearity in the video amplifier.

And SMPTE bars offer a tremendous advantage in field production if you have a monitor which has a "blue-only" switch which shuts off the red and green guns on the CRT. You can adjust WITHOUT a vectorscope on one of these bad boys visually.

Crank up the color so that the two outer bars match all the way from bottom to top through the slice, then adjust phase so that the two inner bars match as well ... PROPER monitor setup by eyeball! :)

This example is set with proper phase, but slightly reduced chroma level, to mismatch the top and the slice so that you can see how it works:



Taa-daa! :)

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Wed Oct 10 03:50:12 2007, in response to Re: Remember TV Test Patterns?, posted by Karl B on Wed Oct 10 00:37:24 2007.

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Pity I'm overloaded busy at the moment ... not only did I enjoy radio because you could do things you couldn't POSSIBLY do on television, I ran a pirate FM station in the Bronx back in the early to mid 70's, and in addition to playing transcriptions and old 78's of original radio shows, we did our own as well. It was a LOT of fun doing the "foley work" to add the sounds needed. I was also involved with Bob Morgan at WLIR doing a show called "Public Watermelon" and "Watermelon Extracts" which was a public call in comedy show in a similar vein ... a LOT of fun! :)

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Wed Oct 10 03:53:00 2007, in response to Re: Remember TV Test Patterns?, posted by tracksionmotor on Wed Oct 10 01:27:20 2007.

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Sylvania sold a "home slide theatre" back in 1971 and 1972 that I helped design. It incorporated a 2 inch 90kV CRT which did that. They turned brown after about a year and techs had to constantly do in-home calls to keep turning up the blue channel. And yeah, I had a ROBOT too. :)

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Re: Remember TV Test Patterns?

Posted by Mitch45 on Wed Oct 10 06:22:11 2007, in response to Re: Remember TV Test Patterns?, posted by monorail on Tue Oct 9 09:20:47 2007.

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3.

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Re: Remember TV Test Patterns?

Posted by Mitch45 on Wed Oct 10 06:23:44 2007, in response to Re: Remember TV Test Patterns?, posted by monorail on Tue Oct 9 09:21:30 2007.

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I remember looking at the snow and seeing seeing pinwheels and spinning things on the screen. Optical illusions, no doubt, or early signs of some kind of dementia.

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Re: Remember TV Test Patterns?

Posted by Mitch45 on Wed Oct 10 06:25:04 2007, in response to Re: Remember TV Test Patterns?, posted by Spider-Pig on Wed Oct 10 01:21:05 2007.

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They don't play the National Anthem on purpose. Its public television and playing the National Anthem would upset too many people.



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Re: Remember TV Test Patterns?

Posted by Scrabbleship on Wed Oct 10 07:11:45 2007, in response to Re: Remember TV Test Patterns?, posted by Mitch45 on Wed Oct 10 06:25:04 2007.

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PROOF?

Sad that so many Americans are offended by their national anthem, yet stay in the country.

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Wed Oct 10 07:31:41 2007, in response to Re: Remember TV Test Patterns?, posted by Mitch45 on Wed Oct 10 06:25:04 2007.

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Actually, all of those were COPYRIGHT by "The Freedom Foundation, Valley Forge, PA" and were once REQUIRED by the FCC. When REAGAN was in office with his five commissioners, the requirement was dropped and Freedom Foundation no longer licenced them, even to the TV stations which wished to play them. :(

When I was Assistant Chief engineer at WFTI-TV54 in Poughkeepsie, we had been playing them at our 1AM signoff every night and when we lit back up at 6AM back in 1981. We were *ordered* to remove it from our schedule and even though the station was owned by a dummy corporation set up by Jim and Tammy Bakker (HOW American can you GET?) we were ordered to just do a signoff and that was that since the COPYRIGHT to the National Anthem was pwn3d. :(

But there you is ... no "liberal conspiracy" there ... it was Reagan's FCC and Freedom Foundation demanding to get PAID. :(

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Re: Remember TV Test Patterns?

Posted by heypaul on Wed Oct 10 09:22:03 2007, in response to Re: Remember TV Test Patterns?, posted by tracksionmotor on Wed Oct 10 02:36:31 2007.

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Outer Limits. Absolutely



And who can forget the Outer Band Individuated Teletracer? It may be '60's technology, but OBIT has it over Google for finding things out...



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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Wed Oct 10 09:33:53 2007, in response to Re: Remember TV Test Patterns?, posted by heypaul on Wed Oct 10 09:22:03 2007.

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Oh noes! Ed WOOD in stereo hi-fi! :)

Always loved the corny oscilloscope display of a theremin input in that show. But it was *so* "pseudoscience" ... aliens NEVER used that frequency, Kenneth! Heh.

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Re: Remember TV Test Patterns?

Posted by Olog-hai on Wed Oct 10 11:02:19 2007, in response to Remember TV Test Patterns?, posted by Mitch45 on Tue Oct 9 06:59:23 2007.

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Imagine stations playing the National Anthem today! Lawsuits galore, I'd wager

Why? It's secular enough, especially when you stick to the first verse.

TV stations in some European countries used to cut off at 11 pm and not come back on until the afternoon. The silence could be deafening . . . and not even all the radio stations stayed on all night.

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Re: Remember TV Test Patterns?

Posted by monorail on Wed Oct 10 11:30:26 2007, in response to Re: Remember TV Test Patterns?, posted by Mitch45 on Wed Oct 10 06:23:44 2007.

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they're ba-a-ack..........

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Re: Remember TV Test Patterns?

Posted by daDouce Man on Wed Oct 10 12:22:15 2007, in response to Re: Remember TV Test Patterns?, posted by SUBWAYSURF on Tue Oct 9 07:21:46 2007.

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Hey! I can actually read it!

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Re: Remember TV Test Patterns?

Posted by Jeff Rosen on Wed Oct 10 12:38:26 2007, in response to Re: Remember TV Test Patterns?, posted by Mitch45 on Tue Oct 9 10:42:39 2007.

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I have you beat. I'm 54 and have an 11 year old (Arthur, who many of you know from BERA) and a three year old, Eric.

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Re: Remember TV Test Patterns?

Posted by Bob Andersen on Wed Oct 10 12:38:59 2007, in response to Re: Remember TV Test Patterns?, posted by Mitch45 on Tue Oct 9 10:26:11 2007.

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I became a grandparent 6 years ago and I'm not old yet!

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Re: Remember TV Test Patterns?

Posted by daDouce Man on Wed Oct 10 12:44:00 2007, in response to Re: Remember TV Test Patterns?, posted by Bob Andersen on Wed Oct 10 12:38:59 2007.

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I became a grandparent 3 years ago and I'm not old either.

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Re: Remember TV Test Patterns?

Posted by Mitch45 on Wed Oct 10 12:52:11 2007, in response to Re: Remember TV Test Patterns?, posted by Jeff Rosen on Wed Oct 10 12:38:26 2007.

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Heh. Tony Randall had a kid at 77.

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Re: Remember TV Test Patterns?

Posted by daDouce Man on Wed Oct 10 12:54:00 2007, in response to Re: Remember TV Test Patterns?, posted by Mitch45 on Wed Oct 10 12:52:11 2007.

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What was it he said about never having a child earlier?

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Re: Remember TV Test Patterns?

Posted by W.B. on Fri Oct 26 15:34:02 2007, in response to Re: Remember TV Test Patterns?, posted by SUBWAYSURF on Tue Oct 9 07:09:15 2007.

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I was wondering if anyone remembers which stations besides the ones to be listed below ran this color variation of that circular pattern, which dated to about 1965-66 and continued to the 1970's:



And this is a partial list:
- WFLD (Ch. 32), Chicago, IL
- WLS-TV (Ch. 7), Chicago, IL (at least after 1974, the year they started transmitting from the Sears Tower, as clearly mentioned in the text on the T.P.)
- WKBS-TV (Ch. 48), Philadelphia (during the Kaiser Broadcasting years)
- WHBF-TV (Ch. 4), Rock Island, IL
- WYTV (Ch. 33), Youngstown, OH
- WOUC (Ch. 44), Athens/Cambridge, OH
- KAET-TV (Ch. 8), Phoenix, AZ (most likely represented in B&W)

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Fri Oct 26 15:37:39 2007, in response to Re: Remember TV Test Patterns?, posted by W.B. on Fri Oct 26 15:34:02 2007.

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WRGB-6 (Schenectady) ... however, it carried the WRGB and 6 in white letters in the lower right quarter ...

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Re: Remember TV Test Patterns?

Posted by TransitChuckG on Fri Oct 26 16:21:29 2007, in response to Re: Remember TV Test Patterns?, posted by daDouce Man on Wed Oct 10 12:44:00 2007.

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I became a grandparent on 06/06/06. And I'm 65. Compared to the rest of you guys, that's old.

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Re: Remember TV Test Patterns?

Posted by SUBWAYSURF on Fri Oct 26 16:29:13 2007, in response to Re: Remember TV Test Patterns?, posted by Terrapin Station on Tue Oct 9 19:38:31 2007.

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You should be spayed.

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Re: Remember TV Test Patterns?

Posted by SUBWAYSURF on Fri Oct 26 16:30:59 2007, in response to Re: Remember TV Test Patterns?, posted by Terrapin Station on Tue Oct 9 07:04:00 2007.

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AND you're a dickweed.

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Re: Remember TV Test Patterns?

Posted by W.B. on Fri Oct 26 18:44:52 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Fri Oct 26 15:37:39 2007.

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Sounds like their logo filled that section. I vaguely remember WOR-TV in New York, too, did likewise (put their logo on the lower right quad of that color pattern).

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Fri Oct 26 20:32:56 2007, in response to Re: Remember TV Test Patterns?, posted by W.B. on Fri Oct 26 18:44:52 2007.

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I believe WNJU-47 did as well when I was working there part time in 1971. Upper left quadrant though ...

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Re: Remember TV Test Patterns?

Posted by W.B. on Fri Oct 26 21:10:42 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Fri Oct 26 20:32:56 2007.

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Funny . . . I seem to recall them using it into the mid to late '70's, now that you mention it . . . anyone else?

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Re: Remember TV Test Patterns?

Posted by tracksionmotor on Fri Oct 26 23:46:19 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Wed Oct 10 03:53:00 2007.

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A ROBOT was like 110 Baud ASCII....you had to sit there for eight seconds for a full frame on orange long persistance CRT and upper part of picture faded away in four seconds as picture was developed on screen and slowly disappeared.

Two weeks ago, an elderly Churchlady asked me what my mom did knowing she worked for AT&T. My mom wrote up network orders for special applications.....like PICTUREPHONE service which was first displayed to the public in the 1963/64 Worlds Fair. A decade later I designed and built RTTY network setups for HF SSB communications used by United Nations and other govermental entities. Now I FIX TRAINZZS!!!

Boy I'd love to have a MacKay Marine 'MacKEY.' I paid ten bucks for a Vibroplex Standard bug over three decades ago at a flea market. You should see the 'asking price' today of a new 'Morse lever.'

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Re: Remember TV Test Patterns?

Posted by W.B. on Sat Oct 27 01:23:01 2007, in response to Re: Remember TV Test Patterns?, posted by W.B. on Fri Oct 26 21:10:42 2007.

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I also have another question: Are the colors on this pattern (which, if you ask, is a recreation) reasonably accurate for what it was? I've seen variants in each color based on several factors including (in the case of a WLS test pattern shown on YouTube) age-related fading of the slide used and possible wear on the camera tubes of the slide chain.

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Sat Oct 27 03:08:38 2007, in response to Re: Remember TV Test Patterns?, posted by tracksionmotor on Fri Oct 26 23:46:19 2007.

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KODAK ASA 30 FILM ... you could PRINT it! :)

And hey ... yer getting too old to do this, bro! "Vibroplex" is a violation of FCC rules. Now HAND me your wallet card ... *RIP!* :)

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Re: Remember TV Test Patterns?

Posted by SelkirkTMO on Sat Oct 27 03:29:43 2007, in response to Re: Remember TV Test Patterns?, posted by W.B. on Sat Oct 27 01:23:01 2007.

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They are NOT the "proper color bar colors as you'd see here:



The above you could CALIBRATE to ... the ones on the test pattern were ONLY meant to dis[lay "in color" at a time when some weren't. :)

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Re: Remember TV Test Patterns?

Posted by Spider-Pig on Sat Oct 27 04:24:10 2007, in response to Re: Remember TV Test Patterns?, posted by SelkirkTMO on Wed Oct 10 07:31:41 2007.

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Like I said, I was the anthem being played on an American station in 2007. Unfortunately it's too big for YouTube and I don't have the software to compress it.

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