I have an old Apple Airport Extreme and I can't blink up with it

Tried no security, its on channel 11, 802.11b/g compatible, multicast rate 5.5Mbps, syncing from my iPhone 4.
When I blink up it stays red during blink up, then is goes out, then it comes back red and blinks without a set pattern.
What is UP!!!

Which imp are you trying to blink up, how is it powered, etc?

The LED should go off during the blinkup process. Sounds a bit like the imp isn’t getting a good power supply here.

You’re not even getting to the point where it’s trying to connect, so wifi settings are immaterial at this point.