Sandaysoft

I think that must be it

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Steve
Sanday Weather
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I've got a 2357 and it stops receiveing from the extrarnal sensor when the indoor temperatur (where the central unit are) falls below approx 15 degres celsius. The indoor readings works well all the time. When I first noticed this, the limit was approc 12 degres, I complained and got a new unit, but his one stops working at 15 degres - bad luck. Looks like this is an undocumented feature for the La Crosse. I tried to ask La Crosse, but was'nt to any help.... So it looks I've got to buy another brand or heating up my cottage above 15 degres, not sure what's the cheapest solution is...

Regards Per

I've never had any problems with my internal unit, in regards to inside temp and unit not receiving a signal from the external station. Maybe its a external unit problem? Try putting in Lithium batteries to you external station and see how it goes.

James

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I'll try litium batteries, I'll give report back in approx 14 days!

//Per

Litium batteries didn't change anything....

Hi,
This is my first post on any forum, so forgive any solecisms. I have a Lacrosse WS 2357, and intend to use Cumulus when I have sorted out various little difficulties.

In particular, my setup exhibits exactly the same symptoms as Hovgaard's: failure of the base station receiver unit below 15degC, although the internal sensors carry on OK. I have tried all the usual stuff such as changing batteries &c, and have eliminated the outside sensor as the problem. The system is OK when communication is wired. I wonder what on earth electronic fault could produce such a bizarre outcom: a dry joint? Surely not.

regards
Mike

Expierencing same problem. Nothing to do with Cumulus.
Display unit has started not to display outodoor temp and wind.
Have always used lithium - changed to new batteries -makes no difference

Hi Pat,

I'm convinced that it is the base station which is at fault: as the outside temperature drops, so does the inside, if the heating in the house is off [like at night]. To convince myself, I moved the thermo-hygro sensor indoors [at about 17degC], and placed the base station outside at around zero. Sure enough, the communication failed when the outside base station was reading about 15deg, and falling. Comms resumed when I brought the base station back into the warm. Tonight, which is exceptionally cold for Somerset at -12deg, the system is still working because the indoor sensor is at 16deg.

I'm still trying to get some sense from LaCrosse and the retailer.

Mike

thnaks - will keep an eye on indoor temp

Hi all,
It's possible that the temp extremes are affecting the Transmit side of the external sensor. I.E. all transmitters drift when subject to temp vartiations, thus its possible that

(a) the transmitter is actually failing to send any data at all ... or
(b) the external unit is still sending data but due to drift it's outside of the recievers bandwidth

If the problem is affecting lots of the LaCrosse units, its the sort of problem they will NOT want to know about.

I may be worth trying to "Listen" to the outside Unit with a Handheld radio scanner, I can hear both my LaCrosse 3600 and WH 6081 squawking away on 433.900 Mhz.

An interesting experiment would be to test the external unit by monitoring it, whilst cooling inside a fridge or freezer...... OR if you want to get really cute buy a can of spray freezer at an electronics suppliers, take your unit apart and spray the internal parts component by component until the fault occurs....

Regards Paul... Happy Xmas and a good New Year

Yes, that's a very good way of checking for dry joints and faulty components.

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Gina

Sorry, no banner - weather station out of action. Hoping to be up and running with a new home-made one soon.

It's also a good way to destroy your hygrometer

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......................Imagine, what you will KNOW tomorrow !

Happy New Year!

Paul, thanks for that, but I'm convinced that the problem is in the base station: I brought the outdoor sensor indoors [20degC], and put the indoor base station outside [approx 0degC], and sure enough, the transmission failed when the base station cooled down to about 14degC. Transmission restarted when I brought it indoors and the temperature came back up above 15deg. No probs when the experiment was repeated with a wired connection.

However, if I can't get satisfaction under the guarantee, I shall take up your suggestion of a freezer can on the electronics on the base station - avoiding the hygrometer!

Problem with trying wireless experiments using a fridge, of course, is that it makes a nice Faraday cage - can you get plastic fridges?

Mike

Sort of - we call them 'chilly bins'. Need to add ice

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Doh-
Didn't think of that!