What's the website for the MW active antenna, please ? 

When i realized MFJ was going under, i ordered their wideband receive loop. It is a big guy. They were out of the model with the transmit switching and i wasn't going to pay mucho $$ just to have the item sent from seller in UK.

I actually had a QSL from NPM which i garnered with a single triode homebuilt receiver. I still remember the card was signed by 'L. G. Rawlins, Lt. USN' and thanked me for my report on their 500,000 kW signal. At some point in my career i threw out all my QSLs, station pennants and such. BIG mistake. 

-Hue Miller