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Old 06-06-2020, 07:21 AM
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Excessive data signal

Hi Guys, could excessive and /or a really good signal cause TV reception issues in Crystal clear conditions, my Caravan TV seems to play up when the nights are clear, no clouds and /or wind etc.

When it is stormy windy and raining all is well.

Leon

Last edited by leon; 06-06-2020 at 07:47 AM.
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Old 06-06-2020, 07:29 AM
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RB (Andrew)
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Nature’s telling you to go out and do some astronomy Leon.


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Old 06-06-2020, 07:46 AM
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I do get out RB, not with telescope in hand but plenty of binocular and just looking up.

Leon
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Old 06-06-2020, 09:42 AM
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Your idea is correct Leon. You can have too much signal. Depending on location, TV transmission can have nestled amongst the band 4G signal also.

You can get an TV signal attenuator for the TV, and/or a 4G signal filter. Both are less than $20 each from Bunnings. This is the less scientific, more experimental approach.

Alternatively, you could look up transmission tower locations on the ACMA website. Check what is being pushed into the local airspace.

You could weaken the signal by throwing something disruptive over the antenna. If it's directional, nudge it off target a little. Even moving the caravan behind a shed can do it.

Your situation will change when you move, but in any case, the ACMA towers map will inform you what is transmitted from where.

Does your horrid 4G internet get better on these clear nights?

Edit: some not bad reading here:
https://www.smartaerials.co.uk/blog/...ak-up-pixelate

Last edited by AndyG; 06-06-2020 at 09:52 AM.
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Old 06-06-2020, 12:33 PM
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Sounds a bit like interference from another source. Normally the agc (automatic gain control) in your receiver should knock down weaker interfering signals, but propagation is fickle.
If you are using a directional antenna already, maybe you could try rotating it to tune for minimum interference (rather than the usual - maximum signal). If you have good signal strength normally, you could also try changing the polarisation of your receive antenna. (ie rotating from horizontal to vertical orientation) That will (theoretically at least) drop the receive strength by 26 dB.
Not sure what the frequency band that your tv source is operating at. That might provide some clues as to what the interference source may be.
In my time, Digital tv used to be in the vhf band around 220 MHz, but I’m not sure what frequencies it uses these days.
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Old 06-06-2020, 02:42 PM
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Thank you, some interesting suggestions,

Andy my horrid internet signal as you call it is magic now after a member from IIS helped me get it sorted, with some secondhand bits and pieces that he had no need for.

I am very happy indeed.

Leon
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Old 06-06-2020, 03:42 PM
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Quote:
Originally Posted by leon View Post
Thank you, some interesting suggestions,

Andy my horrid internet signal as you call it is magic now after a member from IIS helped me get it sorted, with some secondhand bits and pieces that he had no need for.

I am very happy indeed.

Leon
Good to hear Leon. Having no functional internet is a cruel and unusual punishment. I'm glad to hear it's all in order now
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Old 06-06-2020, 07:29 PM
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Tv is around 500-800mhz.
Band 28 4g is around 700mhz or there about a.
Most telly amps and such have 4g filters in em to negate this.

Good to hear that internet is behaving Leon.
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Old 07-06-2020, 07:23 AM
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Thanks guys, it is not often during winter that good weather is expected, so i expect good viewing for a few months.

Leon
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