开云体育

Hi all,

Happy to report that I built my U2 kit last week (aside from fully mounting
the display in the box, it is complete). You can see my build here:



You can see in the photos that I used two small pieces of copper waveguide
thermal epoxied to the osc for heat sink.

I boxed it in this case, using this case:



which has slots which fit the U2 board nearly perfectly, except for two
issues: 1. the display contacts touch the case rail - fixed with some
teflon sheet insulation and contact cement, and 2. the turned around PA
transistors hit the side of the case and would not allow the board to slide
in. I asked a machinist at work to hog out a channel to allow the FETs to
clear. This can likely be avoided if you know you wish to use this box
prior to building the kit and can add length to the FET leads and extend
their bodies a little further inward on the board.

I put it on the air in QRSS mode on Friday evening and saw my first grabbed
sigs and then switched to FSKCW to more easily see them:



Last night, I tried my first WSPRs (sans-GPS) and was excited to see many
spots:




Thanks to Hans (and beta testers) for putting out such a great value kit!
I can see I'm going to have lots of fun with it. I've just placed an order
for each of the new chips and 30 & 40m filter kits to extend my playground.

72,
Chris
KQ2RP