Filter Replacement – BlueAir Model 402 #diy #airpurifier

Filter Replacement – BlueAir Model 402 #diy #airpurifier

Back in April of last year 2023 I did a video about the YouKits SW3B and I got a question from Brian who said his TXRX delay is like 400 ms on his HB-1B and he wanted to know if there were any adjustments so I looked in the manual for both the EK – 1C and the HB-1B and they have RX sensitivity on a couple of bands. They have sidetone frequency, sidetone level and then the power supply voltage reading calibration but I didn’t see any Tx/Rx delay adjustment.

I’ll look for the schematic and then I’ll post another video if I find something good

And the best news of the night was I found one of my ugly noise sources was a Samsung USB adapter it’s going in the trash

73,
Bruce

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