Dec 2012, I order a electronic kits from internet. The kits is Software Define Radio and design by Mr.David Turnbull (AE9RB). I got its from a post box in Jan 2, 2013. Then I checked all parts in package and learn instruction in
http://makeprojects.com/
After I received a kits from I order in
ae9rb.com I saw a good packaged for protect a mistake parts. SMD parts are difficult to check in parts if you have a instruments at you workbench. My order is a set for my first do its yourself.
First step follow as
http://makeprojects.com/ print a table for select the bands. I selected 80/30/40 meter bands. A fig show I mark portion of value for those parts.
Then I prepare a inductor and transforme (L1-L7, T1-T5). and next solder an 0.1uF capacitors on PCB.
Warning ; SMD parts easy to broken. Carefully a assembly.
After assemble 0.1uF capacitor should be checking an parts don't fail.
Add D1 , R1, C1, C2, C3, C4 and Socket J2. Be careful a pin of capacitor and pan have small area to solder.
next solder U1 and U2. Instruction inform parts name "NX1117CExxZ". I saw on package indecate "W257CExxZ". Check in datasheet is corrected.
Supply 12-15V for check both regulator. I supply 13V and voltage output are 5.0 and 3.3 V.
Soldering J3, R14, R15, R16, C21, Q3 and check voltage at collector should be 2.0-2.5V. I measure 2.2V. Then soldering U3, U4, R2, R3, R12, R13, R4, R5, J4, J5, J6
This portion carefully a solder. U10, U11 and P1 are small pitch and small pad. My technique add a little Lead-fee on pad before solder an SMD parts. A flux is helpful for easy soldering.
Follow the instruction for assembly parts then a step 20. I can connect to computer by USB and supply a power. The computer should be detect Peaberry SDR. I install driver for download from AE9RB.com and receiver can operate.
Setting on HDSDR. A peaberry SDR should be show in sound card selection.
Step 24 ; Don't forget a mark on transformer T4, T5. May be made misstake assembly.
Final parts Q6, Q7, Q8 after bend I tick a screw and nut before soldering. Just not finish, must be make external LPF.
Weekend job and now a midnight in Thailand. Must be going to sleep.
