Summary of Contents for Expert Electronics SunSDR2 DX
Page 1
HF output power check 1. Check the output power with Tune mode and dummy load. Set Tune slider to 100%, on HF bands you should have about 100W with current about 20А. If the current is lower, then do the following: Set Drive=0 Press MOX Current should be about 4.7А, if it's lower, then most likely one of the transistors got burned,...
Page 2
Grip the front of the heatsink and pull it for 2 cm. PCB will be extracted with the heatsink; Pull the cable down with the pincer;...
Page 3
Pull the heatsink till the middle of the case, making sure that cables that connect both parts are OK. Now disconnect these 3 cables from the SDR board. Disassemble the TRX, pull out the heatsink and then pull out the SDR board out of the case.
Page 4
3. Connect a 50Ohm – 100W dummy load and go to TX with 100% Drive level. 4. Check the HF voltage on the XS2P connector, it should be around 1V. 5. Check RD16 and RD100 transistors to make sure they are not short-circuited. 6.
Need help?
Do you have a question about the SunSDR2 DX and is the answer not in the manual?
Questions and answers