(TIP) Increase reception RFXcom433

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Re: (TIP) Increase reception RFXcom433

Postby ThinkPad » Saturday 08 August 2015 13:27

Yes.

voorzien van flexibele draadantenne


Just do it yourself, very easy ;) 5 min work.
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Re: (TIP) Increase reception RFXcom433

Postby Hesmink » Monday 10 August 2015 21:07

ThinkPad wrote:Yes.

voorzien van flexibele draadantenne


Just do it yourself, very easy ;) 5 min work.


I have this one, it's fairly obvious where the antenna is at:

temp_front.jpg
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temp_inside.jpg
temp_inside.jpg (157.32 KiB) Viewed 2123 times

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Re: (TIP) Increase reception RFXcom433

Postby ThinkPad » Monday 10 August 2015 22:26

I also have that one :) Should be really easy to mod them, just replace that coil by a 17cm wire.
Or stretch it and cut it at 17cm from the solderpoint.

But i don't have any issues regarding transmission range, so i'll leave it original.
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Re: (TIP) Increase reception RFXcom433

Postby Heisenberg » Wednesday 12 August 2015 8:34

Although all the tips are great regarding modding devices by extending the antenna wire I'm still looking for an aesthetic solution for the RFXcom433(E). Because then you only have to mod the RFXcom433 instead of all the devices that don't receive signals properply .

Will an antenna with > 5dBi boost the signal? Like this one. Or is it useless and better to use a 3 or 5 dbi antenna?
Raspberry Pi Type B
Raspberry Pi Type B2
RFXCOMtrx433e

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Re: (TIP) Increase reception RFXcom433

Postby sincze » Sunday 13 September 2015 13:10

Heisenberg wrote:Although all the tips are great regarding modding devices by extending the antenna wire I'm still looking for an aesthetic solution for the RFXcom433(E). Because then you only have to mod the RFXcom433 instead of all the devices that don't receive signals properply .


I couldn't agree more :D
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Re: (TIP) Increase reception RFXcom433

Postby sincze » Sunday 13 September 2015 13:23

ThinkPad wrote:



I bought this antenna: http://www.ebay.com/itm/281126334307 and pulled the plastic off.
Then desoldered the standard coil, and attached a 17cm stiff wire of a networkcable to it like this:
IMG_20150808_131500.jpg


Drilled a small hole in the top of the plastic tube so the wire can go through it, pressed the plastic tube back on to the connector and ta-da! Works fine and will cost you little.




Just ordered the antenna, let's see and find out :D
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Re: (TIP) Increase reception RFXcom433

Postby sincze » Sunday 11 October 2015 16:29

Received the replacement antenna and soldered 17,3 cm stiff (installatiedraad) to the base.

Doesn't make that much difference compared to the one I already had installed That can be ordered for a few euros for example here:

http://www.ebay.com/itm/Radio-433Mhz-5DBI-SMA-Male-Plug-Antenna-Connector-with-Magnetic-Base-3M-For-Ham/201005647110?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D33747%26meid%3D27540e9eafdc4f90af5a784f7c2802ce%26pid%3D100005%26rk%3D2%26rkt%3D3%26sd%3D200945866818

Suggestions anyone?
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Re: (TIP) Increase reception RFXcom433

Postby sincze » Wednesday 21 October 2015 14:41

Switching a device over a longer distance can also be achieved via this device the IPIO-KAKU-2 :D
http://www.webrelais.nl/IPIO+KAKU+2+v6.0+config.html
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Re: (TIP) Increase reception RFXcom433

Postby Grobbebol » Sunday 24 January 2016 13:13

I bought the 5dB antenna through AliExpress. It costs about 5 Euro and has free shipping to Europe.
Delivery time is about two weeks.

http://www.aliexpress.com/item/GSM-Antenna-433Mhz-3dbi-SMA-Plug-straight-with-Magnetic-base-for-Ham-radio-free-shipping/507782918.html

For me its working fine, had some trouble with reception of a "hidden" On/OFF switch stacked away behind a cabinet.
Also the garden house is now under the cover of the Domoticz Raspberry.
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Re: (TIP) Increase reception RFXcom433

Postby Hesmink » Monday 05 September 2016 22:00

Is the antenna also responsible for the transmit power?
I can receive everything now, but I cannot switch my kaku stuff trough a thick concrete wall.

An extra RFXcom is a bit expensive.

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Re: (TIP) Increase reception RFXcom433

Postby Stokie21 » Thursday 06 October 2016 18:04


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Re: (TIP) Increase reception RFXcom433

Postby tjabas » Tuesday 24 January 2017 18:34

isnt there any 433mhz booster that can be used?
like from amateur radio, i guess that these could increase the output by watts instead of milliwatts.

i now that it isnt very leagal, but is it possible?

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Re: (TIP) Increase reception RFXcom433

Postby sincze » Tuesday 24 January 2017 21:13

For my house the solution came with the RFLINK.

RFXCOM (old style with 10db gain antenna) for ground & first floor.
RFLINK (with 5 db gain antenna) for first and second floor.

Some devices are now detected... twice.. I don't really care about that. As long as I can switch and receive them.
The boxes RFLINL & RFXCOM are mounted out of sight and you only see the antennas sticking out over a closet or so. WAP 'ok' / 'approved'.
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