Sorry it’s been such a long time since the last post. I wanted to show you the latest piece of equipment that I picked up today at a hamfest – a Knight KG-650 RF generator. This should be really handy for aligning and testing radio gear, assuming I can get it to work properly. Here’s what the front panel looks like:
Here’s what the insides look like – appears to be in decent shape:
So I powered it up slowly with a variac and watched the power supply voltage carefully – the supply looks very clean with very little ripple. So I went straight to measuring the RF output. Unfortunately the output is not a clean sine wave, instead the lower part of the waveform is distorted as you can see below. This happens across the entire frequency range. The good news is that other than the distortion, the unit seems to work. Next step is to trace the signals through. Luckily it is a fairly simple circuit – I’ll attach the circuit diagram as well.