开云体育

You asked about the DC40 but I was working with a Forty-9er. I am still waiting for the replacement final transistor from Mouser but the set-up worked well-enough before it blew to have some impressions. The signal sounded clean with no chirps when I listened on the K3.

The kits are not too difficult even with the minimal instructions that come with the Forty-9er. I've built kits before so the soldering and sorting wasn't too difficult. There were a few head-scratchers but it all worked out. I would definitely recommend a heat sink on the final.

I knew nothing about Arduino when I started but I was familiar with drivers and assigning Com ports. I had a hard time getting the files in the correct folders so the DDS VFO would work and display on the LCD. The instructions look clear enough but I had a heck of a time. I would encourage the designers to devote a little more attention to explaining how all that fits together. My copy of Arduino for Dummies didn't get me there either.

My rotary encoder would not work. Turns out (pun) it was mounted on a little board that had two surface mount resistors on the bottom. Those needed to be removed. A swipe with the soldering iron and they were gone, then the encoder worked. That should be a standard instruction, "If the encoder you got is on a board with surface mount parts on the bottom, remove them."

More to follow once I get it back on the air.



k4ia, Buck
K3# 101
Honor Roll
8B DXCC
EasyWayHamBooks.com License and Operating Manuals