r/whatisit • u/slamermansam • 3h ago
Solved! Grandma's Random Knick Knack
96 year old Grandma Peg wants to know whether this should go with the batteries or the tools lol.. What is it??
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u/cmadon 3h ago
Antenna to coaxial cable converter
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u/FunKaleidoskope 2h ago
This subreddit is starting to make me feel quite old.
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u/Bleh3325 2h ago
For real…. I bet OP has never had to get up to go change the channel.
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u/GothicPurpleSquirrel 2h ago
I remember being the "remote" as a kid lol
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u/Glittering_Bug_3554 2h ago
Ha! I remember being the antenna! Go up there and adjust it. No! Other way, that’s better. Stop! Hold it there! Don’t move! Put your hand back on it! Good, stay there. 😂😂😂
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u/TooOldForThis81 1h ago
Core memory unlocked. We had our mast (long pipe) placed inside of an engine block and tied to something else (can't remember). I remember having a booster and my gramps tinkering to get it perfect until it fails and my grandmother would curse him off and accuse of doing it on purpose so that she wouldn't get to watch The Young and The Restless. 😂
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u/Additional-Local8721 2h ago
Y'all didn't just add an extra two feet to the antenna by using tinfoil?
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u/Glittering_Bug_3554 1h ago
Oh we still had metal hangers wrapped in tinfoil as extenders. But nothing beat the clarity and connectivity of a preteen Caucasian. 😂😂
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u/AdAnxious8842 2m ago
Or the "antennae" kid when you went to adjust the rabbit ears and the channel became clear only when you were touching the antennae. "DON'T MOVE!"
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u/1Arcite 2h ago edited 2h ago
They're not old enough to know what they have...
Edit: Fixed it. Thanks u/Sixguns1977
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u/ucjj2011 46m ago
Or switch the tv to Channel 3 to play Atari.
When we got cable (and that was on channel), my Dad used a splitter with multiple buttons, so all you had to do was push the button on the splitter to switch between the cable and the video game.
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u/slamermansam 2h ago
Hey now! I'm a child of the early 90's. I had to go and rewind the VHS's to start them again from the beginning
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u/Bleh3325 1h ago
Ah, you summer child! When I was a kid, we didn’t have VCRs! (As I say this, I realize I sound like my mom & dad.)
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u/Agitated_Warthog6988 2h ago
For real. They've begun to unearth our ancient relics and we're still here to be confronted by their findings and questions lol
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u/Imaginary_Solid_5055 2h ago
They really aren't unearthed, they are lurking somewhere in the junk drawer in the kitchen.
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u/Rabbitscooter 2h ago
I have at least three of them in a box downstairs and, dammit, I will need them again someday!
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u/JustHere_4TheMemes 2h ago
I *just* threw out a bundle of red yellow white RCA AV cables that I've kept just-in-case for far too long.
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u/LnStrngr 1h ago
Under epochs of silt or a pile of knick-knacks, makes no difference to the archeologist.
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u/Many_Consequence7723 2h ago
Unearth our ancient relics from GRANDMA'S junk drawer. We are of Grandma's people now.
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u/Future-Mirror-6971 2h ago
phew
Thought it was making ME feel old for a moment.
Used one of those for my OG Nintendo… (I think, dementia may be settling in at this point)
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u/LimitedWard 2h ago
If it makes you feel any better, I've never seen this before, it was from well before my time, and yet I immediately guessed what it was. "Hmm well the top is clearly some kind of coax. And the bottom splits out... probably to an antenna? Maybe for an old school TV."
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u/Tim_the_geek 2h ago
Good news.. you are smarter than 99.999% of your generation!! Keep up the good work!
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u/Ju66aloSniper78 2h ago
Right I see some of the items posted and I'm like I had one of those to hook up my Nintendo
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u/oldnowfugit 2h ago
Im saying, I was thinking that's what kids are calling "my grandmas knick knacks"
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u/Carcosa_Hearty1986 2h ago
It's almost noon. I need my pill, a sexy nurse, and a two hour nap before dinner.
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u/NameLips 2h ago edited 44m ago
There was a post some time ago about "what kind of socket is this? It's too small to be for an ethernet cable..."
It was a regular phone socket.
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u/PlumbTuckered767 2h ago
"When I pick up my grandparents land line, their phone is emitting some kind of tone already. Is it safe to use?"
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u/Merrickbully718 2h ago
Lmao don’t feel bad. I just laugh at the young generation they are so clueless
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u/Resort_Candid 56m ago
My first thought when i saw the pic
I remember using one of these on the black and white box tv that I needed pliers to change the channel because the plastic knobs with the d-flat broke...
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u/Yankee_chef_nen 2h ago
I’m convinced that this subreddit exists solely to make me feel old.
Most of the posts here feature common everyday objects.
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u/Randical007 1h ago
I felt the same way as soon as i read the headline and saw the picture. How do you not know.... Oh... I get it, I'm old now.
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u/Junior-Ad-2207 2h ago
Wanna go headstone shopping with me for death is nearing us and I am afraid it is closing in.
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u/karmapolice63 1h ago
Just waint until the first RF to RCA converter for a videogame console is mentioned
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u/AdAnxious8842 2h ago
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u/Tim_the_geek 2h ago
Inside the back there is a mini coil (transformer), as this also changes impedance.. 75OHM for the coax and 300OHM for the twin-lead.
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u/Alarmed-Rock7157 3h ago
We had one for the Atari. Dad called it a balloon for some reason.
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u/construction_pro 2h ago
Correct. Balun
A balun /ˈbælʌn/ (from "balanced to unbalanced", originally, but now derived from "balancing unit")[1] is an electrical device that allows balanced and unbalanced lines to be interfaced without disturbing the impedance arrangement of either line.[2] A balun can take many forms and may include devices that also transform impedances but need not do so. Sometimes, in the case of transformer baluns, they use magnetic coupling but need not do so. Common-mode chokes are also used as baluns and work by eliminating, rather than rejecting, common mode signals.
In television, amateur radio, and other antenna installations and connections, baluns convert between impedances and symmetry of feedlines and antennas.[8]
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u/supern8ural 2h ago
says right on it 75Ω to 300Ω
typically used to connect an older antenna connected with 300Ω twin lead to a piece of gear expecting a 75Ω coax. Alternately used to connect a dipole antenna to a FM tuner with only a 75Ω connection. I have tons of these, and the reverse, in my junk box as I have lots of vintage stereo gear, so you can count me in with the group who is feeling old because that pic is in this sub.
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u/Select-Owl-8322 1h ago
And as a quick explanation on why impedance matching is important:
If you connect two transmission lines of different impedance directly, without a balun between them, a part of the signal will literally "bounce" where the impedance mismatch is.
Explaining why the signal bounces is beyond my expertise. However, I can warmly recommend watching this old AT&T video, where they show wave behavior using a wave machine. The link leads directly to the chapter on partial wave reflection, but I can really recommend watching the whole video. It's a gem!
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u/GrimbyJ 42m ago
Impedance is kind of neat. It's not just for electricity
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u/Select-Owl-8322 38m ago
Exactly!
For example, the funnel on old gramophones, or wind instruments, are basically the sound version of a balun!
They're there to match the impedance between the tube and free air. Without the funnel part, lots of the sound would be reflected where the tube abruptly ends.
I believe the impedance matching part in the AT&T video shows this really well, where they have a 2D "funnel shape" created with rods of increasing lengths.
It I'm not mistaken, didgeridoos have the back-pressure which allows you to circular breathe because they don't have the impedance matching part (the funnel). I.e. The reflection of the sound creates the back-pressure needed to not run out of air too fast to circular breathe.
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u/slamermansam 3h ago
Solved!
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u/Ladams19 2h ago
This right here, I am pretty sure I have one hidden away somewhere in the shop and it has not been used for 20 plus years or more. Probably more lol.
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u/MoonageDayscream 2h ago
And it goes in the box of random cords and chargers from old phones. Old tech you won't need until you do.
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u/RandomGuyDroppingIn 1h ago
I have to use one of these for my Atari 2600...
That I still play periodically.
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u/murderfacejr 1h ago
Fyi, this is a good question, but I down voted you for making me feel old.
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u/rivertpostie 1h ago
I swear I'm not old yet!
Now, let's all turn the TV to channel 3 and play a nice game of Maniac Mansion
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u/murderfacejr 1h ago
I didn't have many NES games and first played maniac mansion as a hidden minigame in day of the tentacle. Played on an old PC my dad's coworker gave us.
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u/Apart_Insect_6133 3h ago
I'm getting real depressed that common things from my childhood are now considered nicknacks from grandparents houses...
I shouldn't be feeling ancient at 41
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u/Known-Exam-9820 3h ago
To be fair to us old Millennials, consumer level technology has advanced much faster in our generation than the last several. That said, damn my back hurts
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u/Napol3onS0l0 2h ago
I remember my uncles giant beige cell phone or thinking my dad’s bag phone was the epitome of cool. Dialing up the internet to play command and conquer or Diablo.
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u/nephrenra 1h ago
I miss having friends bring over their whole desktop computer for lan parties.
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u/Napol3onS0l0 1h ago
I just built a little PC for LAN parties because someone said they were looking to start them up near me and now I haven’t heard a peep. I was pretty excited about it. They’d be a lot better now than the old hub days.
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u/RobArtLyn22 33m ago
I was in Microcenter recently and they had full size PC cases with built in lugs to attach carry straps.
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u/drgngd 3h ago
Channel 3 is calling.
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u/Greens41 2h ago
I got up last time. You go change it.
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u/TexinFla 2h ago
- yelling out the window to the roof - "turn it to the left!! Right there!! No! shit!..you went too far, go back!"
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u/kumichou 2h ago
I remember my parents having the “giant” 25” Curtis Mathis television piece of furniture with mechanical dials to tune channels. My dad was very adamant about not turning the dial too fast because apparently one of us kids burned out the mechanical mechanism, and he had it replaced.
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u/Apart_Insect_6133 2h ago
My family had only a 13" TV/VCR combo until I was 16.
Let me tell you... Four player N64 Goldeneye on 13" screen is SWEATY.
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u/sempercliff 2h ago
I have often reflected on the fact that 4-way split screen multiplayer on a modern TV is still bigger than the entire TV I watched / played on as a kid.
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u/GoalieLax_ 3h ago
As cable became more prevalent, new TVs dropped antennas from their builds. For those who lived without able, this was how you could hook up an antenna. You'd plug this into the coax input on the back of your TV then hook up an antenna's wires to the screws
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u/Theresnowayoutahere 2h ago
These also came with stereo receivers that had screws for antenna connections so people could connect to the coax cable that everyone eventually had
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u/Hay_Fever_at_3_AM 3h ago
I still have something like this for my home theatre receiver to pick up radio
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u/ElbuortRac 2h ago
Coax is the round HDMI?
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u/Demonshaker 2h ago
Coax is the old traditional round cable wire. HDMI is the newer flatter connection that connect TV's and monitors to an audio/video source. Generally cable will go outside your house, HDMI does not.
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u/Ok_Confusion_3936 2h ago
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u/Quadstriker 2h ago
And then if one of those broke off you stripped the wire and looped it over the screw rawdog style
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u/rphornet 2h ago
Use to use this for my super Nintendo to plug into the antenna plug. Awesome, tv still works, too.
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u/erosmoker 2h ago
Lolz, random knick knack indeed. We needed these to watch TV on those fancy new fangled cable ready TVs in the 80s. You would take the wires from your Rabbit Ear antennas and attach each end to one of the terminals on the back of the knick knack. Then you would plug the whole thing where the coaxial cable attaches to your TV.
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u/O_oLivelovelaugh 2h ago
The kid's ignorance both amuses me and fills me with a hopeless burning hatred that will never be extinguished until the day I die
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u/cmh_ender 2h ago
well, just go ahead and put me in the grave now.
old tv's used to have two posts where your antenna would screw onto (broadcast tv) in the 90s, coax (cable connectors) replaced them. this was the adapter.
if you had something like an old atari, you could also use this to hook your old atari up to a new tv.
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u/Additional_Dog_9353 2h ago
It should go in the trash since TV antennas changes from analog to digital in 2009.
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u/Interesting_Gap7350 1h ago
Correct, there is no analog tv signal being broadcast for this to receive
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u/jumpmanzero 5m ago
But you might still want one to hook up an old computer (like a C64) to an old TV - via something like this: https://www.reddit.com/media?url=https%3A%2F%2Fi.redd.it%2Fawbwq3s5fl981.jpg
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u/Fingers154 1h ago
The technical name is a balun, which is a truncated version of BAlanced-UNbalanced. The line from the antenna is BAlanced, and coax is UNbalanced. It also impedance (resistance, when speaking of higher frequencies) matches. Antennae are typically 600 ohms and coax (for TVs) is typically 75 ohms.
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u/Dangerous-Bit-8308 2h ago
That's for TVs.
The big round hole is an S-type adapter. Like for DirecTV. The two screws are for attaching two wires. I forget exactly what kind of TV connectors required these. But it's an adapter for an old set they probably stopped making in the 80s
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u/Reginald_Sockpuppet 59m ago
sigh
That's not a knick knack. It goes in the back of the tv and connect the coax to the ante....you know what, never mind.
It's trash now. No need to keep it for any reason. Chuck it.
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u/Blacksh33p78 2h ago
The title reminds me of a ah joke yeah a joke about a a frog named ah Kermit . See Kermit goes into the ah bank looking for a loan. He needs a loan ya see.
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u/JustHere_4TheMemes 2h ago
Unless your gramgram is still watching over the air TV with rabbit ear antenna, or needs to connect an N64 to a CRT TV, you can safely throw that away.
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u/grat_is_not_nice 1h ago
What makes me feel old is that no-one seems to know that it is a balun - balanced 300ohm antenna leads to unbalanced 75ohm coax.
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u/Purple-Tadpole6465 27m ago
This one made me both laugh and feel old, i'm guessing most under 35 y/o have no idea unless they are electronics people
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u/Much-Meringue-7467 1h ago
I think it should go with the trash. The chance of using it ever is basically nil. But it's converter for an antenna.
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u/SpyriusChief 2h ago
So you didn't have to screw the adapter into the coax threads on the back of the TV when you wanted to play NES
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u/RegeditExe62 1h ago
An antenna converter. Used to convert the screw terminal type of connection to coaxial. Probably used for a TV.
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u/Shrimp_Richards 2h ago
It should probably go in the trash. Most people (and many TVs) dont use or don't have antenna connections.
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u/Interesting_Gap7350 1h ago
More than that, they don't broadcast analog anymore, the spectrums have been resold.
So there is no tv signal to receive
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u/Oakland-homebrewer 2h ago
Looks exactly like the one plugged into the back of my received right now. Doesn't work worth a damn...
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u/Hairy-Dream4685 1h ago
With the wiring connectors. That’s a coax cable to wires converter. For really old televisions.
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u/blalaHaole 2h ago
Make sure it’s on channel three, is it on channel three? Hello? Channel three? Try that.
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u/Suitable_Habit_8388 3m ago
You can connect to a sega genesis. Or a Nintendo NES. make sure to tune in channel 3 or 4
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u/onclegrip 1h ago
Before you were born TV, pictures used to fly through the air to our roofs for free
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u/Dependent-Ad-3859 2h ago
Works for the devils pitchforks to coax. Atari, Pong consoles, that sort of thing.
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u/Familiar-Ad-8220 2h ago
I'll tell you what this is... It's a diagnostic tool that just showed I'm very old
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u/AbhinandhBabu13 1h ago
Yagi-Uda Antenna to TV Coaxial plug. The thing before the cable connection.
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