Radio Shack Measuring Tools & Sensors - Popular Questions, Answers, Tips & Manuals

Sensor has gone bad if new batteries, taking it inside (if freezing cold out) and a reset didn't fix it.
LL.L means temperature is below range, i.e. no signal from sensor.

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take some rest and when you feel sick, call or visit a doctor.

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HHH means the temp is over the range that was designed. Where did you locate the sending unit?

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how to calibrate

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I presume by sensor you mean the remote sensor not the main unit which also has sensors? When you buy the 1090 you get one external/remote sensor which is also labeled 1090. If you buy extra sensors they are 1092's. Another new 1092 sensor should work with your 1090 it does on mine. You can have up to 3 remotes just set the channel on them. Getting one is the problem. If your talking of stripping the box down to replace the sensor , well I am sure more than the sensor would have a fault!

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how do i set up my 63-1090 clock need instructions thank bobby woodberry

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Below is a copy of the owners manual for the device you are inquiring about. This will show you how to replace the batteries.

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I ran into this problem and note that in the manual is states for "best results" the sensor should be powered up before the station. I had the station running and it wouldn't lock even after several hours. When I powered it down and brought it back up, it saw the sensor just fine...

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how do you adjust the weather forecaster 63-1090 clock

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When on channel one,hook up an oscilloscope to the channel output circuit on the output terminals.First read channel 1,then channel 2,then channel 3.You can leave the oscilloscope hooked up the whole time.Start on the highest available scale,then work your way down scale by scale until it is accurately readable.Then you will need to find the input to the counting circuit,most likely from a thermistor.You will need to reconfigure the counting circuit to send a signal from what the thermistor is reading for the temperature to 600Hz instead of what the current counting circuit is set at.You can achieve that by connecting the oscilloscope to the output side of the IC for the counting circuit with one lead on the output,one lead on the input,and determine what it is set at currently,then redesign it to pulse at 600Hz input which is 10 second intervals.Greg

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Reset display by pressing the RESET button, located on the back of the display unit inside the battery compartment. Date and time will need to be entered after a reset. Flashing of the outdoor temperature is generally an indication of wireless interference.
Hard Reset:
  1. Bring both the sensor and display unit together and power down by removing at least one battery from each and/or removing the power cord.
  2. Make sure the A-B-C switch on both units matches. ...
  3. Reinstall the battery in the outdoor sensor.
  4. Reinstall batteries and/or power cord into the display unit

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Take it apart and get some isopropyl alcohol and a q-tip. check for corrosion around the terminals. If there is none, look for loose connections. If there is something loose, check if a bit of the board is loose. If a bit of the board is stuck to the terminals, give up on batteries.

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Those are precision devices and require factory check up and calibration at regular intervals. Contact your dealer.

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