A friend brought a Kenwood IF-232C Serial Port Interface to me a while back asking for a little assistance with repairing it. He had replaced multiple components in it but it still wasn’t working properly. When hooked up to a Kenwood TS-850 radio and a computer, the computer could not communicate with the radio or […]
I’m still waiting for a batch of the IRF521 FET’s to arrive so that I can install two of them and finish the board up and install it in the IFR FM/AM-1500. Meanwhile, I just conducted the testing of the operation of the board. The purpose of this testing was to confirm that the J-K […]
The project of building in Inverter Board for the IFR FM/AM-1500 Service Monitor from scratch is moving along pretty nicely. At the moment, I’m simply waiting for a supply of IRF521 FET’s to arrive, at which point I’ll just have to add two of them to this board, reinstall the board, and test the machine. […]
IFR FM/AM-1500 Inverter Board recreation. The original board was seriously damaged when one of the IRF521 FET’s went up in smoke. I tried to patch it up and replace the burned out FET, but the board is pretty much a “goner.” The power supply is still getting “bogged down” with this board in place, and […]
2018 is off to a decent start already, considering that I’ve already accomplished my first personal goal of gathering the “stuff” and setting up to design and build printed circuit boards (PCB’s) in-house. Quite handy for turning designs into actual prototypes and working PCB’s without having to send off the design for someone else to […]