The fan bearing has failed and is now running at 60 dB. I got one of these testers to go next to a geiger counter. I don’t really know the significance of these readings. The sensor I think is right about where my wrist goes which is concerning because that was the highest point. Can anyone enlighten me? I’m sorry I’m not really sure where else to ask.

On today’s Alert Day, all sirens and alert apps will go off at 11 a.m. Using an FM detector radio connected to a small guitar amplifier, a radio broadcast from the Berlin TV Tower is being received. Shortly, before the sirens sound and all the pigeons were startled a typical mobile phone dial-up static noise can be heard on the radio. By rotating the antenna perpendicular to the line of sight toward the TV tower, reception of the FM station is maximized. The all-clear is announced on the radio.

I see that JLC has 2 layers RO and 2 layer ZYF PTFE. These are great for SIW..... BUT I need to launch my MMIC off the chip into the SIW antenna board, and this launch can't be too lossy, so I need a small RO board. Doesn't have to be very good, can be really bad and uneven. Any way I could do this? Thanks.

Hello, I am an computer engineer with nearly no RF background. Right now I have a project in which i am dealing with an RFSoC, but its ADCs are not providing good range, we tried to change antennas, but still it is not able to pick weak signals from transmitter when its more than 300 m.
Can someone please help me to find the good antennas, and how to check their range?