Monthly Archives: April 2017

Correct position of D5/D6


As a follow up on my previous post, here how to replace the D5 and D6. The white multi-line on the component is the cathode. On the PCB footprint, rounded corners on one side indicate the cathode position. As they say, a picture is better than 1000 words:

(click for larger view)

And while removing the old parts, please make sure you follow the common sense approach:

  1. Wet the place with lots of liquid flux
  2. Replace solder on the pads with good quality 60/40 lead solder
  3. Heat up with enough heat (320 deg C) and alternate between two pads. Use absolute minimum force. Or use solder braid to heat up both pads the same time
  4. Clean the pad from flux before soldering the replacement part


Complete Kit v 0.6 Assembly Error


Unfortunately there has been an assembly error on the v 0.6 complete kit. Wrong component has been installed for D5 and D6 on the RF board. Although same component is used for D1 as well, it is not critical to change it. But D5/D6 are part of the SWR/PWR bridge and it is important to install the correct component. Please check if your RF board looks like that:

And if yes, please drop me a mail with your postal address. I will send you the correct replacement parts, free of charge.

I am sorry for the trouble, it was my error causing wrong BOM file sent to the factory.

73, Chris