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From: Michael Black on 15 Apr 2010 15:38
On Thu, 15 Apr 2010, Merciadri Luca wrote:

> Hi,
>
> I have a small greenhouse which is mostly constituted by plastic. I
> also have a small weather station BLUESKY BWS688, with two receptors.
> The manual stipulates that the working range of the receptors is ~30
> meters, but I rather think that it is ~3 meters: my greenhouse is at
> ~5 meters, and its signal is not received. As my greenhouse is not
> surrounded by some metal stuff, I would be very surprised to learn
> that the Faraday effect would take place into it.
>
Are you out on a farm, or in some high density area? If the latter, it
increases the chances that some other device is using the same frequency
for something, and thus blocking the desired signal unless it's close
enough to be strong.

The same frequency is reused for various devices, it's even mildly
possible that you might have something else that is using the frequency.

Michael
From: Merciadri Luca on 15 Apr 2010 17:35
Thanks for all your answers.

On Apr 15, 9:38 pm, Michael Black <et...(a)ncf.ca> wrote:
> On Thu, 15 Apr 2010, Merciadri Luca wrote:
> > Hi,
>
> > I have a small greenhouse which is mostly constituted by plastic. I
> > also have a small weather station BLUESKY BWS688, with two receptors.
> > The manual stipulates that the working range of the receptors is ~30
> > meters, but I rather think that it is ~3 meters: my greenhouse is at
> > ~5 meters, and its signal is not received. As my greenhouse is not
> > surrounded by some metal stuff, I would be very surprised to learn
> > that the Faraday effect would take place into it.
>
> Are you out on a farm, or in some high density area?  If the latter, it
> increases the chances that some other device is using the same frequency
> for something, and thus blocking the desired signal unless it's close
> enough to be strong.
> The same frequency is reused for various devices, it's even mildly
> possible that you might have something else that is using the frequency.
Not at all. I am in a small village, but not in a farm. The house is
normal, and there is no reinforced concrete. There is a maximum of 2
or 3 wireless networks.

Both *transmitters* (sorry for the bad name), as `ehsjr' explained it,
have brand new batteries.

I will do a parabolic antenna tomorrow. I'll let you know. Thanks for
your help.
From: Merciadri Luca on 16 Apr 2010 06:03
On Apr 15, 11:35 pm, Merciadri Luca <merciadril...(a)gmail.com> wrote:
> Thanks for all your answers.
>
> On Apr 15, 9:38 pm, Michael Black <et...(a)ncf.ca> wrote:
>
> > On Thu, 15 Apr 2010, Merciadri Luca wrote:
> > > Hi,
>
> > > I have a small greenhouse which is mostly constituted by plastic. I
> > > also have a small weather station BLUESKY BWS688, with two receptors.
> > > The manual stipulates that the working range of the receptors is ~30
> > > meters, but I rather think that it is ~3 meters: my greenhouse is at
> > > ~5 meters, and its signal is not received. As my greenhouse is not
> > > surrounded by some metal stuff, I would be very surprised to learn
> > > that the Faraday effect would take place into it.
>
> > Are you out on a farm, or in some high density area?  If the latter, it
> > increases the chances that some other device is using the same frequency
> > for something, and thus blocking the desired signal unless it's close
> > enough to be strong.
> > The same frequency is reused for various devices, it's even mildly
> > possible that you might have something else that is using the frequency..
>
> Not at all. I am in a small village, but not in a farm. The house is
> normal, and there is no reinforced concrete. There is a maximum of 2
> or 3 wireless networks.
>
> Both *transmitters* (sorry for the bad name), as `ehsjr' explained it,
> have brand new batteries.
>
> I will do a parabolic antenna tomorrow. I'll let you know. Thanks for
> your help.
Okay, I did it, and it drastically improved the transmitter's range.
Actually, the other transmitter seems not to work. It seems to be
defective. I opened it, checked the selfs, etc., and everything seems
normal, at first sight.
From: ehsjr on 16 Apr 2010 21:55
Merciadri Luca wrote:
> On Apr 15, 11:35 pm, Merciadri Luca <merciadril...(a)gmail.com> wrote:
>
>>Thanks for all your answers.
>>
>>On Apr 15, 9:38 pm, Michael Black <et...(a)ncf.ca> wrote:
>>
>>
>>>On Thu, 15 Apr 2010, Merciadri Luca wrote:
>>>
>>>>Hi,
>>
>>>>I have a small greenhouse which is mostly constituted by plastic. I
>>>>also have a small weather station BLUESKY BWS688, with two receptors.
>>>>The manual stipulates that the working range of the receptors is ~30
>>>>meters, but I rather think that it is ~3 meters: my greenhouse is at
>>>>~5 meters, and its signal is not received. As my greenhouse is not
>>>>surrounded by some metal stuff, I would be very surprised to learn
>>>>that the Faraday effect would take place into it.
>>
>>>Are you out on a farm, or in some high density area? If the latter, it
>>>increases the chances that some other device is using the same frequency
>>>for something, and thus blocking the desired signal unless it's close
>>>enough to be strong.
>>>The same frequency is reused for various devices, it's even mildly
>>>possible that you might have something else that is using the frequency.
>>
>>Not at all. I am in a small village, but not in a farm. The house is
>>normal, and there is no reinforced concrete. There is a maximum of 2
>>or 3 wireless networks.
>>
>>Both *transmitters* (sorry for the bad name), as `ehsjr' explained it,
>>have brand new batteries.
>>
>>I will do a parabolic antenna tomorrow. I'll let you know. Thanks for
>>your help.
>
> Okay, I did it, and it drastically improved the transmitter's range.
> Actually, the other transmitter seems not to work. It seems to be
> defective. I opened it, checked the selfs, etc., and everything seems
> normal, at first sight.

You may need to set the second transmitter to a different channel.

Ed
From: Phil Allison on 16 Apr 2010 22:11

"ehsjr"


> You may need to set the second transmitter to a different channel.


** These sorts of devices do not have the ability to select "channels" -
the transmitters send brief bursts of data once every 5 or 10 seconds and
all use the same radio frequency.

Wireless door bells have the facility to alter modulation CODES so that the
receiver only responds to the matching transmitter - but if two nearby
transmitters are operated simultaneously, then likely neither bell will
ring.



..... Phil


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