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Thread: Range extender desperately needed.

  1. #71
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    Quote Originally Posted by dty View Post
    So how much will you charge to alter people's HR92s for them, Clive? I have three that would benefit from improved reception!

    Also, I assume this works both ways - i.e. just improving reception could leave the HR92 able to hear the controller, but not able to talk back.
    Sorry, Whilst I'm willing to give words of support I’m not going to work on any other than my own. I’m sure you can appreciate why.

    It does work both ways as the transceiver chip uses the same antenna connection for both transmit and receive.
    Last edited by clivesanders; 8th June 2019 at 12:48 PM.

  2. #72
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    Quote Originally Posted by Kevin View Post
    I think I might need a 24 element YAGI on one of mine - and maybe a rotator to get the right reflection !

    73's Kevin

    Along with a 100W PA and Preamp

  3. #73
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    Quote Originally Posted by clivesanders View Post
    Along with a 100W PA and Preamp
    You could stick the yagi on a mast with an elevating rotator in order to use the moon or satellites to bounce the signal.

    More seriously I wonder whether the Control Panel could ever be adapted so as to use the home network as many will have extended their networks around the home. It would still need to be operable if there was a network failure. That would then of course mean changes in the TRVs as well. Bluetooth perhaps could be used?

  4. #74
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    Default HR92 Antenna with IPEX IPX MHF UFL connector

    I appreciate that this is an old thread, but following on from Clive's stellar modifications to the HR92's antenna, I was wondering if anyone had any thoughts on whether an IPEX IPX MHF UFL PCB connector soldered to the ground and signal pads of the board, with an UFL to SMA pigtail, would work? I can get the dimensions of the connector to fit within the case, it is more a question regarding radio engineering. I have attached a photo regarding my proposed modification, with the solder points marked in red - ground soldered to top pad and signal/contact to the bottom pad. Thanks.Modified HR92.JPG

  5. #75
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    Quote Originally Posted by logic_one View Post
    I appreciate that this is an old thread, but following on from Clive's stellar modifications to the HR92's antenna, I was wondering if anyone had any thoughts on whether an IPEX IPX MHF UFL PCB connector soldered to the ground and signal pads of the board, with an UFL to SMA pigtail, would work? I can get the dimensions of the connector to fit within the case, it is more a question regarding radio engineering. I have attached a photo regarding my proposed modification, with the solder points marked in red - ground soldered to top pad and signal/contact to the bottom pad. Thanks.Modified HR92.JPG
    Hi, I donít see any reason that it would not be just fine. In the TI data sheet for the CC1101 chip a 50 Ohm impedance is used in the reference design so the 50 Ohm U.FL connector, itís associated coax and normal antenna (usually to ohm) should all match fine. Your only issue will be plugging in the U.FL. Connector as they can be a bit tricky :-)

    Good Luck, C

  6. #76
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    Thanks Clive, I will post some pictures if it works, and if not, it was worth a try!

  7. #77
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    Default HR92 external antenna update

    I was unable to use the U.FL connector due to the fact that it's signal and ground pads would not provide sufficient contact with the pads on the HR92 panel, and I would also run the risk of solder connecting the signal and ground pads together. I have, however, managed to follow the procedure that Clive outlined previously and solder a SMA pigtail to the pads on the HR92. The SMA connector is attached to a 3dbi 50 Ohm antenna - as per Clive's photos. The results are mixed. The signal is somewhat improved but I am still experiencing a lot of communication faults between the Relay and the HR92. My next step is to follow Clive's advice and to use a 3.5dbi 868 Mhz antenna with a magnetic base, which I will place on top of the radiator. I will report back on how that has or has not improved matters. I would like to check that I have used the correct pads on the panel, with the top one being GND and the bottom the 'Signal' pad? I have attached a photo to illustrate. Finally, Clive if you are there, you mentioned using the original clip as the contact with the pads, cutting the existing cable to the clip and soldering the SMA pigtail to the clip in its place. While I can see where I can/would solder the signal part of the SMA pigtail, where would I solder the Ground? Photo attached to illustrate. Many thanks.HR92 GND and Signal Pads.jpgHR92 New Signal Cable.jpg

  8. #78
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    FYI, Honeywell already make a RAMSES_II repeater.

    https://ithodaalderop.compano.com/Da...BRDG-02M11.pdf

  9. #79
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    Quote Originally Posted by zxdavb View Post
    FYI, Honeywell already make a RAMSES_II repeater.

    https://ithodaalderop.compano.com/Da...BRDG-02M11.pdf
    It was never actually produced by Honeywell, rather more for Honeywell via a jv. The company has now branched into its own called https://www.airios.eu/

  10. #80
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    Thank you for the information, but I have already investigated the Airios BRDG-02EM23 and the Itho Daalderop RF repeater 04-00087 (they actually seem to be the same unit), and I have even found and contacted some outlets in The Netherlands that sell the Itho version, but none will ship to the UK ("it has become too much hassle" to quote one of them). I am thinking of going down the Honeywell Single Zone Round Thermostat (T87RF) route through using it as the room sensor and binding it in combo with the room's HR92. The T87RF has a much better range than the HR92.

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