NJDTechnologies

Radio: it's not just a hobby, it's a way of life

Typical Operating Schedule

Usually QRV CW most evenings, tuning between 472.5 kHz and 475 kHz with CQ's on or near 474.5 kHz. Occasionally QRV JT9, 474.2 kHz dial + 1000 - 1350 Hz. QRV some mornings starting around 1100z on CW. Sked requests are welcome. All activity is noise and WX permitting

2200 Meters

A 2200-meter low pass filter to help buffer the modified MF Solutions converter

– Posted in: 2200 Meters

While performing some off-air tests with the modified MF Solutions converter it became apparent that any variations in a load impedance were going to result in potential variations in the on-board output filter network.  This would likely cause matching issues with the FET and you can probably imagine how it could all spiral downhill from [...]

Coil is finished, installed and resonated…

– Posted in: 2200 Meters

Over the last few days I have tried to spend some of what has become limited free time getting the antenna modifications in place for 2200-meters. Shorter days and colder weather are rapidly approaching so no time like the present. For starters, winding the coil just about killed me.  #10 AWG solid wire is challenging [...]

My thoughts on 2200-meters

– Posted in: 2200 Meters

I have some complicated opinions and thoughts about 2200-meters, many of which are formed from speaking with others who have either operated there or those who have spent time listening there and studying the band characteristics. First, here is a little background information that will hopefully help illustrate my point of view. My very earliest [...]