My subscription to Life expired, but I still have a subscription to Mad.

Monday, June 18, 2018

ICOM AD-55NS AC Adapter

When I purchased my ICOM IC-R8600 receiver, I also purchased its AC adapter, the ICOM AD-55NS.

After using the pair for a few days, I was not happy. The AC adapter generated noise that I could hear across the LW and AM bands and beyond. As expected, the noise was much worse when the receiver’s preamp was enabled.

The noise went away when I swapped the AC adapter with an MFJ 25 Amp switching power supply, so I shipped the AC adapter back to the dealer for a replacement (assuming that the unit was defective) or for a refund (assuming that the unit was not defective).

The dealer tested the unit and said it was operating "normally" and was not defective, so I received a refund which I used to purchase an Astron MS-35M 35-Amp linear power supply. Admittedly, the Astron was overkill for the IC-R8600, but I also needed it to power other equipment in the shack. And so far, I have not detected any noise being generated by the Astron.

Friday, June 8, 2018

Sunday, June 3, 2018

Marconi's Daughter Visits Dad's Cape Cod Radio Site

Art, W1AWX, shot this video of Princess Elettra Marconi visiting her father's Cape Cod radio site on May 31, 2018. Marconi built his first U.S wireless radio station on Cape Cod in 1902 and his station made the first radio transmissions from the U.S. to England in 1903.