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Search found 127 matches

by EvilV
Sun Jun 13, 2010 6:58 pm
Forum: Weather
Topic: Your Weather Data can make a difference!
Replies: 21
Views: 2772

Re: Your Weather Data can make a difference!

Jason, I'm no expert, but I can't really see how this project can work. For a start, the trouble with amateur stations is just that - they ARE Amateur, and you can see from many of the posts on this forum that without modification, many cheaper stations don't give reliable information. For myself, ...
by EvilV
Sun Jun 13, 2010 6:53 pm
Forum: Weather
Topic: Your Weather Data can make a difference!
Replies: 21
Views: 2772

Re: Your Weather Data can make a difference!

I don't decry anyone engaging in a hobby and enjoying it. I do it too, though I have disconnected my wind gear to use the pole for something else. My comments are directed at the idea that a bunch of amateur weather enthusiasts can as the thread title suggests, 'make a difference' in the study of cl...
by EvilV
Sat Jun 12, 2010 5:25 pm
Forum: Weather
Topic: Your Weather Data can make a difference!
Replies: 21
Views: 2772

Re: Your Weather Data can make a difference!

Actually Ray, it isn't true that, 'Only each of us can decide if our data is accurate enough.' There is such a thing as objective truth. It is not a matter of opinion, and whether or not your data is beyond reproach, isn't the issue anyway; the group accepts anybody who applies. Proper weather data ...
by EvilV
Fri Jun 11, 2010 8:35 pm
Forum: Weather
Topic: Your Weather Data can make a difference!
Replies: 21
Views: 2772

Re: Your Weather Data can make a difference!

In my opinion, unaudited data is worthless for anything serious, especially purporting to create an archive for the study of climate change. Serious climatologists go to considerable lengths to calibrate and monitor the quality of their data. Most fans of automatic weather stations take scant measur...
by EvilV
Sat Jun 05, 2010 12:37 pm
Forum: Fine Offset/EasyWeather
Topic: Strange Rainfall Readings
Replies: 14
Views: 1518

Re: Strange Rainfall Readings

On the RF interference question, I have recently started up my old Ham Radio hobby again, and the end of the HF antenna is about five feet from my weather station transmitter unit and rainfall gauge. For about two weeks I have been blasting this with 100 watts of RF from five feet away, and touch wo...
by EvilV
Sun May 09, 2010 12:27 pm
Forum: Fine Offset/EasyWeather
Topic: Battery life
Replies: 86
Views: 15585

Re: Battery life

All true Gina.

You should phone Brown and Cameron and offer to become a coalition Prime Minister. We might get some sense then.
by EvilV
Thu May 06, 2010 11:19 am
Forum: Fine Offset/EasyWeather
Topic: Humidty reading very low - wires swapped?
Replies: 16
Views: 1598

Re: Humidty reading very low - wires swapped?

I agree with Belejuice. It is pointless putting in random correction factors. What is the point of collecting data that is more or less just made up?
by EvilV
Wed May 05, 2010 7:32 pm
Forum: Fine Offset/EasyWeather
Topic: Humidty reading very low - wires swapped?
Replies: 16
Views: 1598

Re: Humidty reading very low - wires swapped?

I think if your humidity is so much different to other reliable local stations you certainly have got an issue. Gina is right for sure. It's quite a leap to jump from 3v to 4.5, and also the typical wall wart things are not that tightly regulated, so it might actually be higher in such a low current...
by EvilV
Wed May 05, 2010 2:50 pm
Forum: Fine Offset/EasyWeather
Topic: Humidty reading very low - wires swapped?
Replies: 16
Views: 1598

Re: Humidty reading very low - wires swapped?

Ah right thanks. In that case I gather I can force a flat +20% on the readings in Cumulus to get it closer to reality...? I think I'd want to check other local readings before doing that. As the season goes on, I wouldn't be the least surprised if humidity changed. I'm no meteorologist, but it is m...
by EvilV
Mon May 03, 2010 10:33 am
Forum: Fine Offset/EasyWeather
Topic: Lost Sensor Contact!!
Replies: 290
Views: 24486

Re: Lost Sensor Contact!!

Hi Christer. I doubt that. The problem is usually due to battery voltage in the outside unit dropping off, especially in cold conditions, when the natural tendency of many types of battery is to drop the voltage. If it was firmware related, why would mine work perfectly from feb 2010 until now, exce...
by EvilV
Fri Apr 30, 2010 7:43 am
Forum: Fine Offset/EasyWeather
Topic: Lost Sensor Contact!!
Replies: 290
Views: 24486

Re: Lost Sensor Contact!!

I grabbed a little time to knock up a dual receiver using two ferrite rod aerials and the LW coils. The circuit does not have a tuning capacitor, with the coils connected directly to point-contact diodes feeding the two (stereo) microphone inputs, and a 680K load resistor in each channel. The circu...
by EvilV
Thu Apr 29, 2010 1:21 pm
Forum: Fine Offset/EasyWeather
Topic: Lost Sensor Contact!!
Replies: 290
Views: 24486

Re: Lost Sensor Contact!!

You got quite a pulse at around ten past nine this morning Gina. Rather out of the blue, that one.
by EvilV
Mon Apr 26, 2010 8:31 am
Forum: Fine Offset/EasyWeather
Topic: Lost Sensor Contact!!
Replies: 290
Views: 24486

Re: Lost Sensor Contact!!

Although there was a small blip on the temperature plot about an hour and a half ago, there was nothing showing on the recording anywhere near that time. Maybe I'll have more success with ferrite rod aerials - hopefully! I suspect that if nothing is showing with a long wire antenna, you don't have ...
by EvilV
Sat Apr 24, 2010 11:09 pm
Forum: Fine Offset/EasyWeather
Topic: Lost Sensor Contact!!
Replies: 290
Views: 24486

Re: Lost Sensor Contact!!

Gina wrote:I'm having a problem with Audacity - keeps stopping. Will investigate further tomorrow. Meanwhile, I'm using sound recorder and keeping fingers crossed.
Good luck. I might have another project for you when you put this one to bed.


:lol:
by EvilV
Sat Apr 24, 2010 7:00 pm
Forum: Fine Offset/EasyWeather
Topic: Lost Sensor Contact!!
Replies: 290
Views: 24486

Re: Lost Sensor Contact!!

Ohhh - sophisticated trick that.


:bash: