SLx digital aerial can you extend the 10m cable included with it

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jmeader43

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This model:​

SLx 27895K4 Outdoor Aerial, Digidome For TV Digital Freeview HD 360° Omni Directional Amplified Antenna with Integrated 4G Filter and Full Installation Kit,White​


It comes with a 10 metre RG6 cable and 12 volt power supply that connects to the aerial

I currently have a 2 metre coax pre-made aerial cable from Toolstation running from the power supply into the TV then the 10 metre RG6 runs up to the aerial

If possible I would like to extend the RG6 cable by another 10 metres to the shed where I would like to place the antenna making it a 20 metre run with a coupler but I am wondering if the voltage drop would be too much

I also have the option of running the included 10 metre RG6 cable into the shed so it can be locally powered and then I could run another 10 metre RG6 cable from the power supply splitter back to the TV

Does anyone have any experience with this or am I best to leave the antenna on just the included 10 metre cable as it was designed out the box to be run
 
jmeader43 said:
Does anyone have any experience with this or am I best to leave the antenna on just the included 10 metre cable as it was designed out the box to be run
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That, is the worst possible type of TV antenna you could possibly buy. They suggest omni, is a benefit, but it is a big negative for good reception - the only benefit is that it will not need to be pointed at a transmitter.

Will it work, with a 10m extension - the extension should not make much difference to its ability to actually work. That type of antenna depend on there just being one, good, local TV signal, then they amplify the relatively weak signal.
 
Harry Bloomfield said:
That, is the worst possible type of TV antenna you could possibly buy. They suggest omni, is a benefit, but it is a big negative for good reception - the only benefit is that it will not need to be pointed at a transmitter.

Will it work, with a 10m extension - the extension should not make much difference to its ability to actually work. That type of antenna depend on there just being one, good, local TV signal, then they amplify the relatively weak signal.
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I've responded on AVForums with much the same.

Philex / Labgear / SLX RG6 cable is copper core, copper-clad-aluminium braid and aluminised plastic foil screen. Not as bad a copper clad steel core RG6 (which is commonplace) and highly resistive.

I'd recommend replacing with all copper construction cable for the whole length: Webro WF100, PF100 (made by Philex) etc.,.
 
Thanks for your reply and I’ll take that onboard. It’s a customer supplied aerial and I’m currently looking at some options. Aesthetics are driving their decision as it’s his parents house and there is a lot of tension between their son (my customer) and them over where it needs to be positioned, the colour and the shape
 
Rodders53 said:
I've responded on AVForums with much the same.

Philex / Labgear / SLX RG6 cable is copper core, copper-clad-aluminium braid and aluminised plastic foil screen. Not as bad a copper clad steel core RG6 (which is commonplace) and highly resistive.

I'd recommend replacing with all copper construction cable for the whole length: Webro WF100, PF100 (made by Philex) etc.,.
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Thanks for the reply I will look into those copper cables and perhaps it will allow me to run a 20 metre cable length from the power splitter at the TV up to their shed
 
Sureitsoff? said:
I thought planning restrictions didn't allow sheds to have aerial fixed to them.
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Never heard of that one.
Though only two antennas are permitted in a normal dwelling's curtilage no matter where mounted (dish, TV, radio) without Planning (and often ignored). https://assets.publishing.service.g...0f0b62aff6c277b/householdersguideantennas.pdf may be worth reading?

Of course Norfolk, and The Broads are a special case - none to be visible from the water iirc...
 
I have never applied for planing, and I note loads of people around here who seem to have 27 Mhz ariels, did consider 2 meter but only one guy I can reach, so seems a little pointless.

As for TV in a narrow boat or caravan I can see why omnidirectional, but in the main we want to only get signal from one mast, so directional aerials both increase signal from a selected mast and decrease signal from others. In the last house, aerial on the wall to mask it from Winter Hill, so only got Moel-y-Parc, but here Moel-y-Sant is rather useless, given up, and use satellite only.

One can extend cables, and after the pre-amp should not be a problem, however it does not say if horizontal or vertical polarised, main transmitters and repeaters use different polarisation, vertical is OK as a simple dipole, but horizontal need a halo type aerial which have a lot of losses. Distance does matter, leaving Sizewell 'B' using SSB I was comparing signals between halo and 7/8th whip, and as expected up to Cambridge the halo worked best, but then I got a black spot, and by time approaching M1/M6 interchange, on way to North Wales, the 7/8th whip was actually working better. Most do not use 2 meter sideband mobile, it was an experiment.

However, it depends on the other station as well, he had a rather good horizontal beam. Falklands uses horizontal mobile FM 2 meter, but most use vertical for mobile.

The whole idea of horizontal or vertical polarised transmitters is to stop the repeaters interfering with the main transmitters, so seems odd not to state which the aerial is. FM, DAB & Digital TV seems odd, as the TV carrier signal is not digital or analogue it does not matter, it would be like saying black and white receiver, does not matter what colour I paint the aerial, which is the apparatus which receives the signal, so it is the decoder circuit which allows one to view in black and white (monochrome) or colour, not the receiver (aerial).

This
1718578645702.png
is the important bit, the cable and any amp or filter must be able to take DC, many wall plates include a brade break to stop static shocks when handling the cable, and these will not allow DC to pass.
 
ericmark said:
I have never applied for planing, and I note loads of people around here who seem to have 27 Mhz ariels, did consider 2 meter but only one guy I can reach, so seems a little pointless.
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I have :- 2m/70cms; 2m/70cms/6m; discone; 50m long, long wire; home made yaggi, for a wifi link, TV yaggi; TV sat dish, and to that collection, I sometimes add an homemade ADS-B antenna, which clips onto my house gutters.

At one point, I had a 1m steerable TV sat dish.
 
I have assumed you were a ham, use of QTH was a giveaway, for other that's home address. My son got it in trouble with his wife, with reference to QRM, I had forgotten the reference, and when she asked told her what it meant, together with XYL, any way enough of that OM.
QRM = man made interference.
XYL = Wife or ex-young lady.
OM = Old man.

I have never understood why people want to reinvent things, we have a maidenhead locator to show worldwide locations, so what is the point of another two words. Just duplicating on what we already have. Maybe we can reinvent the telephone or rediscover America?
 
ericmark said:
I have never applied for planing,
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Naughty!! ;)
ericmark said:
As for TV in a narrow boat or caravan I can see why omnidirectional, but in the main we want to only get signal from one mast,
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Same applies in a caravan or on a narrowboat. Use a directional antenna at the wanted Tx... https://www.aerialsandtv.com/knowledge/aerials/aerials-for-caravans-and-boats

They make em so you can rotate and cant from H to V from the comfort of inside the vehicle now, https://visionplus.co.uk/product/status-580-directional-digital-tv-fm-dab-radio-antenna-system/
 
I have not really wanted TV when away in the caravan, and in the narrow boat unlike the caravan family may be watching TV on the move, however in this case neither a caravan or narrow boat.

I have used a 9" dipole to get TV, the mast (Moel-y-parc) was direct line of sight, I also used a slim Jim made from some 300 ohm ribbon cables Sellotaped to the window.

There is little point studying for one's RAE, then not using the knowledge gained. When I was less able, I got a TV aerial installer to fit a new TV aerial. He used the existing mast, however, mounted it above the rotator, so it would only work when I was using the normal BBS for packet radio, one has to ask where he learnt his trade?

But I simply can't see why anyone would use an omnidirectional aerial for TV in a fixed location? OK before digital when we had Welsh and English TV, but today no.
 
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