BATC Forum

I haven't seen it mentioned elsewhere so I thought I would report the following so it doesn't catch out others.

Whilst assembling the 8 Band RF Switch on a V2.1 PCB under a microscope I noticed that the pads at the ground ends of R1 and R2 in the input attenuator were not connected to anything. It looks like the thermal relief connections to the surrounding ground plane were missed out from the PCB design.

It is easy enough to correct this, just scrape away a little of the solder resist next to the pads and add a blob of solder to join the pads to ground.

Colin G4EML

Thank you for posting this.
The artwork has now been amended, but anyone with a V2.1 PCB will need to do that mod.

Hi Colin and Colin,

I'm just building mine so a timely alert. I am waiting for the resistors for R1 and R2 and have modified the board in preparation. I checked the V1.0 board and that is fine. Luckily, it's a simple fix.

Thanks for the heads up.

73

Malcolm G0UHY

Thanks Colin

I have amended the Wiki to include this. Would you be able to provide a photo of your modified board? All of the development team are still working with Version 1 boards....

73

Dave, G8GKQ

Hi Dave,

Attached is a picture of the modified area.

73
Colin G4EML

Thanks Colin

I've included it on the Wiki.

Dave