Persistent Pixelation on Playback

[Last.To.Know]

Sorry to drag this thread up again but I was reading BH's
Things Every HD/HDR-FOX Owner Should Know.

What are people's opinion on turning on the 5V Antenna Power?

What effect do people expect it will have?

 

[prpr]

What more is there to add than what is already written there (and indeed in the rest of this thread)?

Have you still not got somebody in?
Are you still trying to bodge things?

 

[Owen Smith]

Sorry to drag this thread up again but I was reading BH's
Things Every HD/HDR-FOX Owner Should Know.

What are people's opinion on turning on the 5V Antenna Power?

A quick read and what BH wrote looks fine to me.

What effect do people expect it will have?

With no amp in the system or fault on the cabling it will have no effect at all. If there's a fault the 5V may be shorted out, I assume the HDR Fox T2 protects itself from that. If there is another power supply for an amp on the aerial system who knows what will happen, it depends on how the other power supply handles a DC voltage.

I've never understood why the HDR Fox T2 can generate 5V antenna power, it's an odd choice. Most mast head amps need 12V power.

 

[Last.To.Know]

Thank you for your replies.

 

[Rodders53]

Antenna power is only useful if there's an amplifier that can be remote powered in the path to the antenna. Some are designed to work at 5V (e.g. Optima by Vision - 5-12V rated), although most are 12V rated and either may not work at all or potentially give lower gain.

With no amp you should get a 'shorted' message (as an antenna dipole is a DC short circuit between core and screen).

I've used it to remote power an Optima masthead on a touring caravan antenna. Some TVs also have an antenna power option* at 5V as well... I'd suspect that is a feature of the tuner modules used by the makers... as to why 5V probably 'cos it's there within the unit, rather than 12V?

* I'd often suggest people look for that antenna power feature on a TV that wouldn't tune in on a home move, to test if the masthead power supply had been taken by the removers in error.
https://www.aerialsandtv.com/knowle...-diplexers#line-power-leakage-corrosion-issue is a reason to ensure it's off when not powering a remote amplifier.

I agree that the OP does need to bite the bullet and get that system sorted professionally. Probably with a completely new installation using quality all copper satellite grade cables.

LOCATION matters (transmitter/predictions of field strength and interference) - and that request was side-stepped.
As does the antenna (aerial) atop that pole (gain / pattern) which we've not seen/had described accurately.

 

[Owen Smith]

As does the antenna (aerial) atop that pole (gain / pattern) which we've not seen/had described accurately.

I thought there was a photo but there is nothing.

The existing Fringe power supply gives 12V from the photos, so that is probably what the amp requires.

Having looked at the existing system again in the photos, I agree that total replacement is overdue. It was badly installed to start with and is now showing serious signs of aging. Very degraded plastic and aluminium all over and who knows what state those old cables are in.

 

[prpr]

I've never understood why the HDR Fox T2 can generate 5V antenna power, it's an odd choice. Most mast head amps need 12V power.

My Proception MHD12M says 5-12V on the front, but attempting to power it from either an HD or HDR results in the unit putting up a large black box over the video complaining about an antenna short-circuit. This box cannot be removed apart from turning off the 5V option again, so it makes the unit unusable with it on.

 

[Black Hole]

What are people's opinion on turning on the 5V Antenna Power?

What effect do people expect it will have?

I don't understand why there would be any confusion about this:

This setting must be "off" unless you are sure you need it - in most cases you do not because either you have no mast-head amplifier or if you do it already has its own power supply.

I suppose I could edit it to underline the "must"...

 

[Owen Smith]

Original poster is looking for a quick hack to get his antenna system working, rather than the total replacement it is clearly overdue for.