I have still got my F.O. 1080 down for mods etc and have a multimeter (Fluke 863) clipped up to take a few readings.
Battery voltage is 3.45 volts from 2 X RAM (rechargeable alkaline manganese) batteries with 5" square solar cell. Batteries are fitted inside the solar cell housing and I have soldered a flying lead to the terminals inside the transmitter.
I did a few measurements using "peak hold", here are the results----
1. Initialise (when batteries first connected) and the long red blink of the LED 26mA
2. "Dormant" period between TX pulses 0.028mA
3. "Polling/pre-transmit" occurs about 1 second before data transmit 4mA
4. Transmit (LED blinks on) about 1/2 second 7mA
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Latest Cumulus MX V4 release 4.4.2 (build 4085) - 12 March 2025
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
If you are posting a new Topic about an error or if you need help PLEASE read this first viewtopic.php?p=164080#p164080
Current Drawn from batteries
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andrewinpopayan
- Posts: 38
- Joined: Fri 19 Mar 2010 10:03 pm
- Weather Station: N96GY
- Operating System: Suse Linux 11.2
- Location: Wyke, Bradford BD12, UK
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kodi
- Posts: 11
- Joined: Thu 09 Dec 2010 10:57 am
- Weather Station: w-8681
- Operating System: Win XP SP3
Re: Current Drawn from batteries
I measured mine WS-8681 and getting average of 3.7mA (average is calculated over few hours). Looks like I'm the "lucky" one with "faulty resistor" board :/
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Peter_Arura
- Posts: 8
- Joined: Sat 03 Apr 2010 6:18 am
- Weather Station: WH1091
- Operating System: Vista
Re: Current Drawn from batteries
I was having heaps of issues with my WH1091 with battery life, got the s^*&its with at and bought a transformer that runs the correct voltage (3.0v I think) and removed the batteries all together from the transmitter, ran the wiring through the roof tiles and to a power point in the roof. Works fine now, havent had a blackout yet though !!