Recent content by roggom

A quick pic of the amp, the case acts as a nice heatsink, although a TO-3 heatsink would be a little more efficient. Not taking it apart any more.

I have built tube and hybrids audio amps in the past. I like the hybrids as it is usually the best of both worlds. Robust tubes up front and rock solid SS PA. Does anyone know of some good hybrid plans or links for 10m, something around 100w.

Making Progress Well the MS1307 came in and were a bust. I am usually skeptical about eBay fakes, but I did not want to spend too much. They may work in another circuit design, but not this one. The good news is that I did make progress. The IRF likes voltage, I experimented with 24vdc and...

Waiting for the MS1307's, I decided to make a ball pen rf probe, the design is available all over the net. Armed with my new probe and an old school VTVM I started probing my amp. I found that the output coil was choking my signal. I also found a cold solder joint. The cool thing is that I am...

Thanks for the feedback, I am sure once I get the 1307's in there it will start working. Great to hear practical application info, all of the threads I have found out there did not share any results.

Hi there, I picked up an RM Italy KL-40 and was amazed at its simplicity. Quick into: I have been in the electronics field for over 20 years and work in medical instrumentation/ xray. I build SS and tube audio amplifiers from scratch, as I find it fun and intriguing. I understand that...