Reddit Reddit reviews RCA Matching Transformer -VH54R

We found 22 Reddit comments about RCA Matching Transformer -VH54R. Here are the top ones, ranked by their Reddit score.

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RCA Matching Transformer -VH54R
Converts receiver connection to cable or wireConverts coaxial (75 ohm) to flat antenna leads (300 ohm)Lifetime
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22 Reddit comments about RCA Matching Transformer -VH54R:

u/HRGeek · 6 pointsr/snes

An RF Switch connected to a Matching Transformer with the TV set tuned to channel 3? That is how we had to hook up consoles to our old Televisions in the 1980's.

u/CoreyC · 6 pointsr/cordcutters

I think this is what you need to connect a convert box to the tv:

https://www.amazon.com/RCA-VH54R-Matching-Transformer-VH54R/dp/B00005T3EY

u/nakedarthur · 6 pointsr/crtgaming

I think what you need is an antenna to coaxial adapter.

u/KnownSimplyAsTim · 6 pointsr/whatisthisthing

Definitely this. There would have been an aerial uhf/vhf antenna on the roof, it used 300 ohm flat two wire cable to connect to these leads, old TVs connected.directly or you could get a.converter to go to 75ohm coaxial

Like this https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.amazon.com/RCA-VH54R-Matching-Transformer-VH54R/dp/B00005T3EY&ved=2ahUKEwikgdXFjbvjAhVBxFQKHRiAD_YQFjABegQIBRAC&usg=AOvVaw2ePM00Y7EX6FfrOxxeXz6w&cshid=1563337387146

u/so-very-very-tired · 5 pointsr/Mid_Century

To start, you'll need one of these to connect the antenna leads to a coaxial cable: https://www.amazon.com/RCA-VH54R-Matching-Transformer-VH54R/dp/B00005T3EY/ref=pd_lpo_vtph_147_bs_t_1?_encoding=UTF8&psc=1&refRID=PN19KZXXQZQ06C6R7A34 Then you need to figure out how to connect the coax to the digital signal.

You could get one of these to go from HDMI to 480RCA out: https://www.amazon.com/gp/product/B017M05AXW/ Then get one of these to convert the RCA to a coax signal: https://www.amazon.com/CIMPLE-CO-Composite-Converter-Modulator/dp/B06XC9Y3VB/ref=sr_1_1_sspa?ie=UTF8&qid=1542760515&sr=8-1-spons&keywords=rca+to+coax&psc=1

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So the chain would be: digital source --> HDMI --> HDMI to RCA converter --> RCA --> RCA to RF/Coax converter --> Coax --> Coaxial to Antenna Leads converter --> TV

u/dalvikcachemoney · 5 pointsr/cordcutters

Your TVFool link is not working for me. Thats a VHF/UHF antenna judging by the sizing of the elements so it should work. That box is an FM trap which means it would filter out FM radio frequencies. This can help reception if you have strong FM stations nearby and are trying to draw in weaker TV stations. The FM trap has a bypass switch, its currently in the off position so it is NOT filtering FM. The 75 or 300 switch allows you to change the trap output between 75 ohm coax cable and 300 ohm twin lead. You'll want to leave that on 75 and connect your coax cable to the box. If that box gives you trouble you could try bypass it by purchasing one of these. But I would give it a go with the current setup before purchasing anything else.

u/CraftingNinja · 4 pointsr/crt

Ok so you have 2 options, one not as practicable but would be more convenient with more sets. Option 1, the easier one, is to get an adapter like this one. https://www.amazon.com/RCA-VH54R-Matching-Transformer-VH54R/dp/B00005T3EY/ref=mp_s_a_1_9?keywords=75+ohm+to+300+ohm+adapter&qid=1573104431&sprefix=75ohm+to&sr=8-9

It doesn't have to be this exact model but you just need some sort of adapter like this one. Considering this tv was made without any inputs other than RF, this is your best bet. This is also considering your vcr has RF, but since nearly every vcr has RF already you should be fine. The second option, is less practical but possible is to create your own analog station in your home. Since the analog airwaves for tv have been pretty much abandoned, you can do what you want with it and this would be a neat thing to setup, especially since it would also be able to transmit to portable tvs also. If you don't want to buy an adapter brand new, you could probably find a used one in a thrift store but the new ones are not all that expensive either. There are also rca to RF converter boxes so with those you can take composite video and lay it on this tv.

u/StorageB107 · 4 pointsr/RetroPie

Composite video out of the Pi using this cable

https://www.adafruit.com/product/2881

and an RF modulator to connect to the Antenna In connection on the TV

https://www.bestbuy.com/site/insignia-rf-modulator-black/4947028.p?skuId=4947028

If your TV is even older and only has VHF terminal connections, then you also need a Matching Transformer

https://www.amazon.com/RCA-VH54R-Matching-Transformer-VH54R/dp/B00005T3EY/ref=sr_1_3?s=electronics&ie=UTF8&qid=1540062212&sr=1-3&keywords=rca+matching+transformer&dpID=41CIx78IkcL&preST=_SY300_QL70_&dpSrc=srch

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Note: Do not buy the standard composite out video cables from Amazon. Most of these will not work with the Pi (unless it specifically says it does) because the pinnouts are different (even though the cable looks the same). Also, don't buy the cheap RF modulators on Amazon because some of them are very cheap knock off brands that don't work correclty. I made both of these mistakes when I was getting started.

u/thisgameisawful · 3 pointsr/ColumbiYEAH

I don't know a company, but I built my own. To connect it to existing coax, you need a balun, something like this. If you haven't already bought an antenna and are the DIY sort, you can google for "Grey Hoverman" for a decent one to build. The one I built gets a ridiculous number of channels, and it's made out of picture wire and a 1x3 from Home Depot.

Edit: Should note, appearance wasn't an issue for me because it's in the attic, I spliced it into the coax the previous owners had run for satellite TV. YMMV

u/MeowMixSong · 3 pointsr/cordcutters

You need a 300 to 75 ohm matching transformer, (also called a balun), attach it to the VHF terminals, (not UHF), and turn the TV to either channel 3 or 4, (whatever you set your box to output on).

The iView 3500STBII is excellent for this, as it has a physical 3/4 switch in the back, and it's as simple as setting a VCR. Run your aerial into the "Antenna IN" port to the STB, and hook up a short lead of coax between "OUT TO TV" and your balun. Turn on the TV, and turn on the box. Set it up like normal

u/lillgreen · 3 pointsr/AskElectronics

See the headphone lookin jack on the back labeled Ext Antenna? It's doable but you'll need some nutty adapter spaghetti.

  • one of these - not sure where to get them these days but like this
  • one of these
  • and an rf modulator

    Put tv on channel 3 or 4 VHF and done.

    Good chance that it's only a black and white screen btw. Sony had portable color tvs of the same size back then but lesser known brands were B&W. There would also be more than three knobs on the back if it were color, those are the bare adjustments for grey scale.
u/VA7EEX · 2 pointsr/amateurradio

The dipoles are connected with a c/137MHz/4*VF piece of RG8X soldered on, then a 4:1 tv balun was soldered on so I could easily hook coax up. The impedance matching suuuucks horribly, and I would have a better antenna without the 4:1 balun, but it was quick and dirty and it works.

u/funderbunk · 2 pointsr/VintageApple

The Apple II has a composite video output - but you need an RF modulated signal for your tv. So, you can take the composite video signal to an RF modulator, like this one. If your television doesn't have a coaxial antenna input, you'll also need an antenna matching transformer, like this one.

u/DiDgr8 · 2 pointsr/cordcutters

It's usually the big expensive Tv's that don't have an antenna option. If your cheap little TV is so old that it only has an analog tuner, it may have a twin lead 300 ohm connector instead of 75 ohm coaxial connection. Then you might need an adapter like this

As for an internet backup, I have cable at home and my cell phone can turn on as a cellular hotspot. They aren't going out at the same time. My cable was out during Hurricane Irma (along with my power) for three days. I wasn't streaming video, but I was checking email and downloading ebooks. I take that back. I did stream video some. I would sit in my car for about an hour a day running the engine for A/C and watching the local TV stations livestream.

u/MarzMan · 2 pointsr/cordcutters

Could help. I'd try making sure it's pointed almost straight east first, since that's where most of your signals should be coming from, and seeing if you get any signal from NBC.


Also if you have a Stereo with an antenna input you can get one of these doohikeys and connect it to that roof antenna for extra reception.

Edit: Forgot, we had an issue similar to this in my old house. One of our TVs would not pick up a certain channel. I think it was either NJN or maybe ABC, can't remember now. Every other TV would get it and have quite high signal strength but that TV would see no signal at all. It did have an extra maybe 30ft of wire from my TV to that TV and that wire was very very old so that could have played a part but it was only 1 channel that it lost which is so bizarre. Never could figure out why, we even hooked up another indoor antenna with no luck.

u/mareksoon · 2 pointsr/Austin

The splitter was needed because you probably wanted to get the coax to both your FM receiver and the TV or set top cable box. It was nothing more than a simple coax splitter.

However, you'd also need a matching transformer to convert coax at 75ohm into the two leads for your receiver's external FM antenna at 300ohm.

At least, I think that's how I did it. :-)

Alcade looks like a good source for future research. I noticed KTSB and KVRX matched hits in many different issues, and while perusing those parts, adjacent articles also looked interesting.

I went to ACTV studios one evening when Dean Langston was doing his dating show, Singles Hotline. I have part of one of those on VHS somewhere. I never directly participated in the show, that I remember, but ended up going out a few times with the chalkboard girl he had on the show that same night tallying contestant answers. It looks like he passed away in 2001. Here's a clip of him ... previewing VR (which I'm pretty sure has been posted here before).

When We Were Live was dropping ACTV videos on here (/u/ArchiveAlias/), but I haven't seen them in awhile. Here's their youtube.

I watched hours of Ask Livia LIVE! ... or maybe she was just on TV in the background while I talked to friends on the phone all night, because that's what we did.

u/zed857 · 1 pointr/BudgetAudiophile

Try that twinlead antenna you found on amazon, just connect one U shaped connector to the screw terminal next to FM Ant and the other U shaped connector to the terminal above it.

It won't be optimal because the antenna is 300 ohm and the connectors are for 75 ohm. But it will probably work OK.

You'll be hard pressed to find a matching transformer / balun that will work with this style of connection. Most transformers take a 75 ohm screw on connection on one end and have two 300 ohm leads on the other end (here's a typical example of one). They are the opposite of what you need.

Your connection is actually meant to take 75 ohm coax with no fitting on the end (the other end of the coax is connected to an FM antenna outside or in your attic). The coax is stripped to expose the center conductor - which wraps around the FM Ant screw. Then the braided shield is twisted together and is wrapped around the the screw above the FM Ant screw (and this has to be done so shield doesn't short out to the center conductor). It's a real pain in the ass to do.

You have an odd variation on this receiver. A Google image search shows the FM antenna connection as a PAL/euro style push-on connector rather than two screw terminals.

u/sivartk · 1 pointr/crt

Does it have external antenna inputs (probably 2 sets of screws, one for VHF, one for UHF)?

If so you could get a 75 Ohm to 300 Ohm adapter and then a RF Modulator converter.

This way you can feed it composite input without making any internal modifications. Honestly, the modifications sound more fun and would probably have better picture quality, too 😁

u/wdouglass · 1 pointr/hometheater

You'll need an rf modulator, like this one
https://www.amazon.com/RCA-Compact-RF-Modulator-CRF907A/dp/B0014KKV7W

If there's no coax connector on the back, you'll also need an antenna adapter like this one
https://www.amazon.com/RCA-VH54R-Matching-Transformer-VH54R/dp/B00005T3EY/ref=pd_lpo_vtph_23_lp_t_2?_encoding=UTF8&psc=1&refRID=SCJBM46AQKFHHE22KS5W

That tv is really cool, good luck!

u/GeneralissimoFranco · 1 pointr/crt

Set the TV to VHF Channel 3 or 4 and run whatever you want through a demodulator (just like you used to do with your game consoles). You might need a coax to antenna adapter.

https://www.amazon.com/RCA-Compact-RF-Modulator-CRF907R/dp/B0014KKV7W

https://www.amazon.com/RCA-VH54R-Matching-Transformer-VH54R/dp/B00005T3EY/r

u/xCanont70x · 1 pointr/crtgaming

The back of the tvonly has a vhf connection and has an Rf matching transformer like this.

u/2old2care · 1 pointr/audio

You need one of these.