(TIP) Increase reception RFXcom433

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sincze
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Re: (TIP) Increase reception RFXcom433

Postby sincze » Thursday 04 December 2014 23:49

Calzor Suzay wrote:Maybe my original antenna is badly placed and this just improved it then.

I have it at the back of the house in the lounge where Raspberry Pi is plugged into the TV, I could get most stuff except the Garage (separate building) struggled to pick up motion sensor and I could never get sensor at the top of the stairs. It all seems to pick up fine now. I was a bit sceptical at first as the aerial is tiny, not much more than the original but (touch wood) seems to work ok so far :)

BTW my house is thick solid brick built, even internal walls.


Same here. I tried another antenna as well but this aerial is just better.
Maybe 5db would cover everything a little more but this is now working.
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Re: (TIP) Increase reception RFXcom433

Postby ny-hardcore » Sunday 07 December 2014 0:04

i bought this yesterday, hope it works....
http://www.ebay.com/itm/251702841735?_t ... EBIDX%3AIT

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Re: (TIP) Increase reception RFXcom433

Postby Calzor Suzay » Sunday 07 December 2014 21:52

Looks pretty much the same, it isn't much bigger than the original but does seem to have a better range for me.

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Re: (TIP) Increase reception RFXcom433

Postby Calzor Suzay » Wednesday 10 December 2014 11:26

FYI I think the cable from the RFX to aerial itself plays a part in the signal.
I originally had it just loose in a circle between the RFX and aerial and decided to tidy it up so it wasn't loose.
I then started to see dropouts to the far items so made it loose in a loop once again.

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Re: (TIP) Increase reception RFXcom433

Postby niclasf » Wednesday 10 December 2014 13:24

Calzor Suzay wrote:FYI I think the cable from the RFX to aerial itself plays a part in the signal.
I originally had it just loose in a circle between the RFX and aerial and decided to tidy it up so it wasn't loose.
I then started to see dropouts to the far items so made it loose in a loop once again.

I think it is rather the USB-cable that acts as an extended ground plane. The cable from rfxtrx433 to antenna is shielded an is thus not to be seen as an antenna.

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Re: (TIP) Increase reception RFXcom433

Postby Calzor Suzay » Wednesday 10 December 2014 19:58

Well that's what I fiddled with and no it works better :)

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Re: (TIP) Increase reception RFXcom433

Postby remb0 » Sunday 11 January 2015 19:06

Bliek I bought the same antenna as you but the numbers (of all my devices) are not different.
I have the cable and antenna in my corridor almost 15 cm from a kaku device in the wall, but no improvements.

any tips?

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Re: (TIP) Increase reception RFXcom433

Postby mbliek » Sunday 11 January 2015 20:18

That's weird. At all of my devices it increased at least 2 numbers up.

What number are they now? Maybe your already on the maximum? That's what I would expect with just 15 cm away.
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Re: (TIP) Increase reception RFXcom433

Postby remb0 » Monday 12 January 2015 9:59

The only reason I bought this antenna is to boost it so i can control my garden lights.
Now that lights are 15 meters away. and I have sliding doors that blocks wifi and 433. If this door is open rfxcom can control the lights. (on for sure but off is most of the time a problem)
But Tuin gets a 7 ? and gang keuken and wc are much more nearby and gets also a 7.

I don't understand.

Code: Select all

212   RFX   08EC1B6   9   Tuin   Lighting 2   AC   Off   7
53   RFX   210E   1   Badkamer   Temp + Humidity   Cresta, TFA TS34C   17.8 C, 57 %   7
31   RFX   096182A   10   Schuifpui   Lighting 2   AC   Closed   5
57   PiFace   103   0   Water   RFXMeter   RFXMeter counter   53.33 m3   12
11   RFX   0A2FEA6   12   slaapkamer   Lighting 2   AC   Off   6
26   RFX   059EDF2   12   Eet tafel   Lighting 2   AC   Off   7
14   RFX   0A12D2E   11   Lamp_achter_buiten   Lighting 2   AC   Off   7
30   RFX   059EDF2   11   Keuken   Lighting 2   AC   Off   7
47   RFX   l09A0FD2   10   WC   Lighting 2   AC   Off   7
46   RFX   082B616   11   Overloop   Lighting 2   AC   Off   7
12   RFX   082B616   12   Gang   Lighting 2   AC   Off   7
291   RFX   08EC1B6   1   Unknown   Lighting 2   AC   On, Level: 100 %   5
136   RFX   08EC1B6   8   Salontafel   Lighting 2   AC   Off   6
292   RFX   08EC1B6   7   Unknown   Lighting 2   AC   Off   6
226   RFX   H   10   PingPI   Lighting 1   X10   Off   7
130   RFX   9   1   xbmc-PI-plug   Lighting 2   AC   Off   7
56   RFX   0A2FEA6   11   xbmc-PI   Lighting 2   AC   Off   6
128   RFX   0CE9B76   12   Deurbel   Lighting 2   AC   On, Level: 100 %   7
287   RFX   75551   2   deurke   Lighting 5   BBSB new   Closed   7
132   RFX   041EE0B   1   Switch oplader tv   Lighting 2   AC   On   7
40   RFX   041EE0B   3   Ventilator   Lighting 2   AC   Off, Level: 100 %   7
125   RFX   10000   1   Zonnescherm   RFY   RFY   Open   7

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Re: (TIP) Increase reception RFXcom433

Postby ThinkPad » Monday 12 January 2015 10:05

I think receivers always will get a 7, because they only do what their name says: receive signals. The RFXCOM just broadcasts the signal, and if a module picks it up: nice.. If it doesn't: RFXCOM doesn't care.

So you can only see if a bigger antenna has effect by looking at the signal quality of devices that transmit signals to the RFXCOM. Or if you have a light in the back of your garden that doesn't work with the stock antenna, but does with a bigger antenna on the RFXCOM.
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Re: (TIP) Increase reception RFXcom433

Postby markk » Monday 12 January 2015 15:16

I've noticed a difference since I bought this: http://www.ebay.com/itm/251702841735?_t ... EBIDX%3AIT

I haven't checked signal data but I have a light in a shed at the end of my garden which was hit and miss with the stock antenna and yet worked every time since I changed it for this one just before xmas.
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Re: (TIP) Increase reception RFXcom433

Postby olleman » Saturday 31 January 2015 12:05

Hello,

Just my two cents. I bought this one http://m.ebay.com/itm/191458437272?_mwBanner=1

And I can't say it made any difference at all...

,Olle

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Re: (TIP) Increase reception RFXcom433

Postby marin849 » Saturday 31 January 2015 20:39

I tried 3 different ebay-antennas (two with magnetic base and one patch antenna) but then I bought this one, which really beats them all: http://www.conrad.com/ce/en/product/190 ... -Radio-Kit
With this antenna I receive all my temperature sensors perfectly. Some of the most distant switches were still unreliable though.

So what finally solved my last problem was to add 17 cm of thin solid wire as antenna on three of my most distant receivers. I just let the wire (isolated) hang straight out of the receiver. These are now working 100%!

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Re: (TIP) Increase reception RFXcom433

Postby Kouseri » Friday 13 March 2015 18:20

I bought this antenna from Ebay and it looks like it's working much better compared to the original antenna from coverage point of view.

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Re: (TIP) Increase reception RFXcom433

Postby Moberon » Sunday 22 March 2015 23:22

marin849 wrote:I tried 3 different ebay-antennas (two with magnetic base and one patch antenna) but then I bought this one, which really beats them all: http://www.conrad.com/ce/en/product/190 ... -Radio-Kit
.... These are now working 100%!


I can understand that this antenna will be working well. The same as a replay before the design of the antenna is very impartant. The other (all coming for low prices from China) will maybe incease a little bit but if you've got the possibility I recon go for the above!

Be aware, there is no information about the gain of the antenna but I am quite positieve that this antenna will give some boost to the (transmitted) signal. In the Netherlands at leat a increase in transmit power illegal.. :shock: (As stated in the Domoticz manual ofcourse..)
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Re: (TIP) Increase reception RFXcom433

Postby thebeetleuk » Tuesday 31 March 2015 8:15

vmb wrote:
kimhav wrote:Well, I got one of these antennas from ebay; http://www.ebay.com/itm/NEW-Antenna-433Mhz-3dbi-SMA-Plug-with-Magnetic-base:

Image


Any experiences yet? Noticed any improvements?



Hi All,

Just wanted to report back that I got one of these yesterday and I can see a marked improvement. I'd love to share figures if I had any but I do notice my temperature sensors all receive data all the time now. Previously it was quite intermittent with some of the ones further away in the house.

Good luck!
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Re: (TIP) Increase reception RFXcom433

Postby BigDog » Tuesday 31 March 2015 15:16

nice

i have ordered also one from alibaba
sometimes the temrature sensor @ my 2e floor isnt reseaved for 2 hours
hope this helps :)

wil report back when i have it :)
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Re: (TIP) Increase reception RFXcom433

Postby BigDog » Wednesday 15 April 2015 12:10

great antenna! have connected it to the RFXcom and indeed better reception the temp sensor @ the 2e floor is also comming in every time before it was 1 time a 2 a 3 hours now it come in everytime :)

thanks for the tip
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Re: (TIP) Increase reception RFXcom433

Postby thebeetleuk » Thursday 16 April 2015 23:36

:)
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Re: (TIP) Increase reception RFXcom433

Postby sincze » Thursday 30 April 2015 21:56

Works like a charm!
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