HDMI TV to COAX conversion

K

kerry pinkerton

New member
Jul 13, 2012
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Say someone had their coach wired for regular old COAX for TVs in the kitchen and bedroom but installed a Sat dish with converter. These DISH or
DirectTV boxes have an HDMI out and a S Video and 2 Audio RCA adapter outputs. The HDMI works fine for a single TV and splitter adapters are
available. Perhaps they have a 39' stretch (or SOB O) )and didn't want to run a HDMI cable under the coach and all that. Is there a simple way to
get from the Sat box to Coax?

I've been searching the interpipes and haven't found anything but I know Johnny Bridges and others know this electronic TV kind of stuff.
--
Kerry Pinkerton - North Alabama

77 Eleganza II, 403CI, Manny Brakes, 1 ton, tranny, lots of aluminum goodies.

http://www.bdub.net/pinkerton/

'03 Fleetwood Discovery 39L
 
Kerry,
> Is there a simple way to
> get from the Sat box to Coax?

if your reasoning for Coax is the cabling and not the final output
device, check for HDMI Coax Extender

--
Best regards

Peer Oliver Schmidt
PGP Key ID: 0x83E1C2EA

'76a Eleganza II, VA
 
> Say someone had their coach wired for regular old COAX for TVs in the kitchen and bedroom but installed a Sat dish with converter. These DISH or
> DirectTV boxes have an HDMI out and a S Video and 2 Audio RCA adapter outputs. The HDMI works fine for a single TV and splitter adapters are
> available. Perhaps they have a 39' stretch (or SOB O) )and didn't want to run a HDMI cable under the coach and all that. Is there a simple way to
> get from the Sat box to Coax?
>
> I've been searching the interpipes and haven't found anything but I know Johnny Bridges and others know this electronic TV kind of stuff.
When you say "S-video" do you mean the little multi-pin connector or the yellow RCA connector?

I needed to do go from yellow/red/white AV to channel 3 or 4 (selectable) and used an old timey VCR.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
 
Leave the TV at home, and enjoy RV instead. Nothing on TV beats that.
Jim Hupy
Salem, Or
78 GMC ROYALE 403

On May 9, 2017 10:27 AM, "Peer Oliver Schmidt GMC"
wrote:

> Kerry,
> > Is there a simple way to
> > get from the Sat box to Coax?
>
> if your reasoning for Coax is the cabling and not the final output
> device, check for HDMI Coax Extender
>
> --
> Best regards
>
> Peer Oliver Schmidt
> PGP Key ID: 0x83E1C2EA
>
> '76a Eleganza II, VA
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
The yellow jack/plug is for composite video, which is the lowest quality.

Next up in quality is S-Video.

Then Component Video (Red/Green/Blue).

Then HDMI.

Audio is always Red and White with the first three above. Red is for right channel.

Coax cable is for the RF signal off the air, cable box, satellite, or converter.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ Since 30 November '53 ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ Member GMCMI and Classics ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
|[ ]~~~[][ ][]\
"--OO--[]---O-"

________________________________
From: Gmclist on behalf of A.
Sent: Tuesday, May 9, 2017 12:34
To: gmclist
Subject: Re: [GMCnet] HDMI TV to COAX conversion

> Say someone had their coach wired for regular old COAX for TVs in the kitchen and bedroom but installed a Sat dish with converter. These DISH or
> DirectTV boxes have an HDMI out and a S Video and 2 Audio RCA adapter outputs. The HDMI works fine for a single TV and splitter adapters are
> available. Perhaps they have a 39' stretch (or SOB O) )and didn't want to run a HDMI cable under the coach and all that. Is there a simple way to
> get from the Sat box to Coax?
>
> I've been searching the interpipes and haven't found anything but I know Johnny Bridges and others know this electronic TV kind of stuff.
When you say "S-video" do you mean the little multi-pin connector or the yellow RCA connector?

I needed to do go from yellow/red/white AV to channel 3 or 4 (selectable) and used an old timey VCR.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."

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To see the collection of prior postings to the list, visit the Gmclist Archives. Using Gmclist: To post a message to all the list members, send email ...
 
> Say someone had their coach wired for regular old COAX for TVs in the kitchen and bedroom but installed a Sat dish with converter. These DISH or
> DirectTV boxes have an HDMI out and a S Video and 2 Audio RCA adapter outputs. The HDMI works fine for a single TV and splitter adapters are
> available. Perhaps they have a 39' stretch (or SOB O) )and didn't want to run a HDMI cable under the coach and all that. Is there a simple way to
> get from the Sat box to Coax?
>
> I've been searching the interpipes and haven't found anything but I know Johnny Bridges and others know this electronic TV kind of stuff.

Kerry,

I bet Johnny will answer, and I can tell you much of what he will say. Nope.

HDMI is a digital output with multiple lines. You don't even want to try to put a connector on the cable. It is 19 pins.
S-Vid is still analog video, but it is separated differently than is Component (when you have three colored cables. I has to be accompanied by at
least a pair of audio lines or a digital audio that can be run as a coax line or optical cable.
Basically, to use the existing coax you would have to convert the individual signals all to a composite and then use a modulator to make it look like
a TV signal. This would be a lot like having your gold metal bronzed.

So, it sounds like you have a choice to make here. I never made this choice. The entertainment rack at home is some of everything except composite.

Matt - safe at home.
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Still Loving OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
 
> ...Basically, to use the existing coax you would have to convert the individual signals all to a composite and then use a modulator to make it
> look like a TV signal. ...
Like I said., if what he is calling "S-video" is actually composite video, a plain old VCR is capable of doing what he wants. But I haven't seen a VCR
with actual s-video in/outputs. If the video plug is not a yellow RCA, I have seen on the web ways to convert s-video to composite by grafting the
ends of the cables together. I don't know if it works.

Last time I messed with s-video was late '90s or early turn of the century. Those brain cells atrophied a while ago, so I can't remember if I was
converting something TO s-video or something FROM s-video.
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
 
Commodore 64 computers used the S-Video system to drive Commodore monitors. The video signal is broken down to Chrominance (C signal) and Luminance (Y signal). This produces a noticeable improvement in picture quality and definition.

The Commodore computers also had a composite (lower quality) video output for those who wished to connect their computers to their existing consumer television sets rather than buy the higher quality Commodore monitors.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ Since 30 November '53 ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ Member GMCMI and Classics ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
|[ ]~~~[][ ][]\
"--OO--[]---O-"
 
I've been trying to find an HDIM input to ATSC RF modulator (not the EU
DVT-B standard).
That would open up a lot more options, like multiplexing the antenna and HD
signals on one coax. So far, nothing.

Mark

On Wed, May 10, 2017 at 12:52 AM, Peer Oliver Schmidt GMC <

> Bruce,
> > I don't know of any HDMI to coaxial cable extenders
>
> Your Google Might is not with you, little padawan :)
>
> https://www.amazon.com/dp/B00HWIWEMU
>
> https://www.amazon.com/dp/B00DUHFU8M
>
> :-)
>
> --
> Best regards
>
> Peer Oliver Schmidt
> PGP Key ID: 0x83E1C2EA
>
> '76a Eleganza II, VA
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
 
Cheapest way I've found... but you hafta pull HDMI cable:

https://www.eagleg.com/hdmi-products/hdmi-extenders/hdmi-active-extender-female-to-female-built-in-equalizer/

The ones which modulate coax and then demod it at the other end will go further but they're quite pricey. My setup has two RF outputs, one of which
feeds each TV set.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased
 
Marmitek offers some devices that might work together to provide stuff
you want.

First: HDMI -> SCART => Marmitek Connect HA13
This converts your HDMI source to SCART

2nd: SCART onto Coax for around the "house" -> Marmitek MegaView 70
Transfers SCART input onto coax cable (Unfortunately PAL only not NTSC).

Alternatively, for the US market

RCA Compact RF Modulator (CRF907R)

Maybe some of that is of help.

--
Best regards

Peer Oliver Schmidt
PGP Key ID: 0x83E1C2EA

'76a Eleganza II, VA
 
> Cheapest way I've found... but you hafta pull HDMI cable:
>
> https://www.eagleg.com/hdmi-products/hdmi-extenders/hdmi-active-extender-female-to-female-built-in-equalizer/
>
> The ones which modulate coax and then demod it at the other end will go further but they're quite pricey. My setup has two RF outputs, one of
> which feeds each TV set.
>
> --johnny
If he is going to run a wire, all he needs is cat 5e or 6 cable and an adapter at each end to get HDMI from point A to point B (up to 98 feet). We ran
one from the control booth to the projector at our church. Works fine.

https://www.monoprice.com/product?p_id=8121

I thought the whole point was to avoid running a wire...
--
73 23' Sequoia 4 Sale
73 23' CanyonLands Parts Unit 4 Sale
Upper Alabama
"Every day I become more convinced that I am the only person left on the planet that recognizes nonsense for what it is."
 
Well there is one lower tier way than even yellow video out--- RF ch 3/4. You could get a modulator to run RF down the coax to get video and audio to
the distant TV. It depends on the TV size and capability as to whether the RF ch 3 format would be bothersome to you. If it's a small LED or old CRT
it will do what you are asking it to in your first inquiry. Not HD pic/sound
--
John Lebetski
Woodstock, IL
77 Eleganza II
 
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