Reddit Reddit reviews 75 to 300 Ohm UHF/VHF Matching Transformer

We found 37 Reddit comments about 75 to 300 Ohm UHF/VHF Matching Transformer. Here are the top ones, ranked by their Reddit score.

Audio & Video Accessories
Accessories & Supplies
Electronics
Audio & Video Antennas
75 to 300 Ohm UHF/VHF Matching Transformer
Adapts 75 ohm coax to 300 ohm twin lead (or vice-versa) at antenna or television5-900 MHz UHF/VHF/FM3 capacitor PC board type
Check price on Amazon

37 Reddit comments about 75 to 300 Ohm UHF/VHF Matching Transformer:

u/Brass_Orchid · 18 pointsr/RetroFuturism

I doubt that it had coax. Probably just the old screws for bladed UHF/VHF antenna wires. So another adapter after coax.

u/Blrfl · 14 pointsr/whatisthisthing

> giant antenna / ligtning rod thing

Ah, kids these days... :-)

Those are antennas, and there are two of them. The brass-colored one is a directional UHF/VHF TV and FM antenna, probably pointed toward the transmitters for most of your local over-the-air TV stations. The silver one at the top of the mast is probably an omnidirectional FM antenna. They look to have 300-ohm twinlead cable, and you'll probably find the other ends terminated on wall plates with two screws. Since there are separate antennas, one probably goes to where a TV might be situated and the other to where a stereo might go.

If they're not in the way of anything, leave them there or make use of them. To connect them to current equipment, you'll need a 300-to-75-ohm balun, also called a matching transformer.

u/loveshercoffee · 11 pointsr/whatisthisthing

This is the thing you want. It's called a matching transformer. They're probably even less expensive at a place like Walmart if you have one locally. A hardware store or big box home improvement store likely would have one as well.

u/k6usy · 7 pointsr/cordcutters

You might need a antenna balun.

75 to 300 Ohm UHF/VHF Matching Transformer https://www.amazon.com/dp/B0002ZPIOG/ref=cm_sw_r_cp_api_Eph8Bb6Q73B6K

u/WhistlesG0WooWoo · 7 pointsr/gamecollecting

What you need is the RF adapter for your nes (assuming that you have this part) and then you need a 75 to 300 ohm adapter. Or If I read your post wrong and all you have is the screw terminals on the end of the RF adapter (if you are using one from a different machine that is older) you would need a 300ohm to 75ohm adapter. Here are some links :
http://www.amazon.com/RCA-VH58-Matching-Transformer/dp/B00005T3EZ/ref=sr_1_3?ie=UTF8&qid=1463005321&sr=8-3&keywords=300-75+ohm+adapter

http://www.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG/ref=sr_1_1?ie=UTF8&qid=1463005321&sr=8-1&keywords=300-75+ohm+adapter

u/bhove · 6 pointsr/crtgaming

Protip: don't buy the Atari switchbox or whatever, get yourself something like this. The quality is way better, it's more reliable, and cheaper. Pair it with a female rca to female coax adapter.

I love how you've hooked it up in the meantime.

u/TMH01 · 4 pointsr/crtgaming

You need to convert the HDMI out to RF with something like this:
https://www.radioshack.com/products/radioshack-hdmi-to-coax-adapter?gclid=EAIaIQobChMI_KuCtvTn2QIVzrXACh1eQA1wEAQYBCABEgLXqPD_BwE

Then use a coaxial to antenna adapter like this:
https://www.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG

You'll also need a coax cable to connect the two.

u/Butt_Pocket · 3 pointsr/BudgetAudiophile

75 ohm antenna

thing that makes impedance 300ohm

They work the same, the adapter is to hook up rabbit ears to use for a fm antenna

u/crazykoala · 3 pointsr/whatisthisthing

Yep, twin lead cable. You should be able to adapt that 300 ohm flat to the more modern 75 ohm coaxial cable using one of these. Those adapters are fairly common and available at Walmart, hardware stores, etc. If you have an antenna on your roof it is probably connected to that. If you have a tv with a digital tuner (most flat screens have one) you might be able to tune in digital broadcasts in your area.

Will I need a new antenna to get digital TV?

If you are in the USA or Canada check the TV Fool web site to see if there's free tv in your area and what direction to point your antenna for best reception.

u/officeaj · 2 pointsr/cordcutters

I will be building an antennae as soon as my transformer comes in.

The reason for the question is because that is what was in my attic to begin with connecting some cables. Wasn't sure if it was meant for this or not.

Thanks for the replies.

u/jrz302 · 2 pointsr/cordcutters

You probably need an antenna transformer/balun:

https://www.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG

Also make sure it’s pointed in the right direction, or you won’t get diddly for reception.

u/imwearingatowel · 2 pointsr/HomeImprovement

Yep, speakers look like older banana sockets.

The TV connectors look like old 300 ohm antenna connectors (like this). You probably have/had a TV/FM antenna somewhere on the house or in the attic?

The middle plug is to control the rotator motor for the antenna.

If the antennas are still there, you can probably still use them with a 300 ohm to 75 ohm balun

u/contrarian1970 · 2 pointsr/gaming

If you bumped the tv THIS terrible thing would fall to the floor:

https://www.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG



u/AfricPepperbird · 2 pointsr/vintageaudio
u/TomBakerFTW · 2 pointsr/crt
u/wickedcold · 2 pointsr/gaming

lol so was anything on a TV screen back then.

These fucking things.... I don't miss them.

u/just_want_to_lurk · 2 pointsr/AskAnAmerican

oh shit.... yeah... they need to hook up to those VHF connectors.

Here ya go: https://smile.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG/ref=smi_www_rco2_go_smi_g3905707922

edit: aw shit.. i just realized that's the wrong direction :(

edit 2: there is only one solution.... you have to buy an old TV.

u/mithikx · 2 pointsr/Android

Sorry, but please be assured that the next revision will have a UHF/VHF 300 ohm twin lead connector and include a dongle to convert to coax.

u/VA7EEX · 2 pointsr/RTLSDR

You could achieve the same result with a tape measure in this instance. Not a particularly wideband antenna but suitable for a specific purpose.

Or of you fold that tape measure over and put a 4:1 balun on both ends you end up with a Tape Measure Folded Dipole which would be more wide band than a straight dipole, but still not as wide-band as a planar disk or discone antenna.

u/[deleted] · 2 pointsr/gameofthrones

Using this.

u/sampsans-ape-spray · 2 pointsr/Mid_Century
u/rollback123 · 2 pointsr/techsupport

With a digital convertor all you'd need to add is a 75 ohm to 300 ohm adapter like this:
https://www.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG
to the cable coming off the convertor. Connect to the VHF antenna input on the back. Tune to channel 3 or 4 depending on how the convertor is set. Then watch away.

Can't tell from the picture. Is this baby black and white or color? Plus it has UHF up to channel 83. Old school!

u/themacman2 · 2 pointsr/cordcutters

HD Home Run. IF comcast gives out cable cards, you could network your DVR =, stop paying $30 a month for DVR Shit. You'd save the price of the DVR in like 4 months. OR, attach it to an antenna. I have one and attached it to this with a short Coax. Works well if your in an area with ok reception. If not, try this.

u/SgtMac02 · 1 pointr/Cordcutting

> If you use romex (3 conductor house wiring)

Yes! That's the stuff. So, theoretically, I could leave it completely intact and simply connect all 3 wires at the end where it has to connect to the balun?

Yes, I was referring to the WRDW station

I'm just using a standard 75 to 300 Ohm UHF/VHF Matching Transformer and a bunch of wire (or coathanger for the basic one I tried first). Are you implying that there is something wrong with the one I have or that there are different types? What should I be using instead of this one?

And I'll note that I'm still confused by the fact that my box says it's receiving a signal on that channel, but not showing me anything, and not picking it up on the autoscan.

u/LolYouFuckingLoser · 1 pointr/whatisthisthing

>Highly unlikely any modern device will work connected to that input

Ideally I'd like to get an NES or something running on it. I'd love to be able to get something with emulators working through it, but I'd be happy with almost any old console. I'm hoping it can be part of a little nostalgia battlestation.

> You probably don't have the right converter.

Will the RCA on the front require a converter? I can't just plug in the video portion of a normal RCA? I grabbed one of these from Amazon to see if I can't get something through the antenna. Not too hopeful about it, but it's cheap so I'll give it a shot.

>If you do get it working, you're going to be really unimpressed with the picture.

That's half the point, honestly. I have a perfectly good, more modern CRT TV that I could use but my girlfriend insisted that I should at least try to figure out a use for this old thing. Which honestly didn't take much convincing; I've had this TV for as long as I can remember. I've watched Hercules, Xena, Star Trek, Pokemon, MadTV, The Wayans Brothers, etc etc on this thing as a kid.

u/llzellner · 1 pointr/ota

As others point out you need a balun:

https://www.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG

You connect at the antenna.

Next, 300 ohm twin lead has a benefit, that it can go quite a long distance with lower loss, but in 2017, using it for distribution or even down the tower is pretty much not done. Most of the equipment today, splitters, amps, filters, etc. are all geared to coax with the F connector.

Today its is mostly RG-6 cable, even the DBS guys are using it even with the use of LNB which are in the 900-2100MHz range.

A lot of this depends on your setup, ie:

How high is the antenna mounted?

Number of TV's? Number of splitters? Any preamps? Being as you have the old twin lead, while possible, very few new preamps take 300ohm twin lead. In the past many only came that way, on the input and the output was an F coax connection.

How is this connected to TV's??? At some point it has to turn to coax, as no modern TV has had 300 ohm twin lead inputs since the late 90's. The last one I had was a little Panasonic which had both, and a switch to change between the two.

But to start off with a quick answer.. Balun and then get some RG-6 cable.

u/Artbrutist · 1 pointr/vintage

you may also need something like this

u/fdjsakl · 1 pointr/cordcutters

New antennas are much smaller and better for around $100 or less for what you need.

You have strong stations, so you might want to just hook it up there in the attic and see how it works, the coax adapter you need is this.

http://www.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG

u/CrackAnus · 1 pointr/audiophile

75 to 300 Ohm UHF/VHF Matching Transformer

https://www.amazon.ca/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG

Not usually used in home audio, except for some forms of radio.

u/oddsnsodds · 1 pointr/vintageaudio

Coax is ~75 ohm impedance; Twin lead antenna cable is ~300 ohm. You can strip coax to connect it to the 75 ohm lugs, or you can buy a matching transformer to connect it to the 300 ohm lugs:

https://smile.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG

u/SturgeonMcGuai · 1 pointr/crtgaming

First, you'll want a UHF to VHF adapter, then connect that to an RF modulator. Most VCRs should be able to to this, or you can get a standalone modulator.

u/entactogen · 1 pointr/RTLSDR

75-300 ohm balun is what you need, I'm experimenting with antennas at the moment too. http://www.amazon.com/300-Ohm-UHF-Matching-Transformer/dp/B0002ZPIOG

u/TwistedBlister · 1 pointr/vintagetelevision