G1 and G2 boards

Posted by on March 27, 2013

I got a few boards today that SA5BJM wanted me to design and since I needed them for my own project I did. The G1 board is based on a DC9DZ design which I modified some values to suit the QBL amplifier. I haven’t tested it, I am missing a 230->110v transformer that currently is at SM3WMU QTH since he transported it from SA5BJM when he was south last weekend.

I also tried the anode choke. First I had 4 sections (no real need to wind sections for this since I have a ferrite, but I did anyway) and got 800uH indutance so I changed to 3 sections and got about 550uH. I did some quick measurement and seems like I have no resonances below 30 MHz which was the goal.

Tomorrow I am heading down to SJ2W and I will be QRV SOSB 20m this weekend.

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Electronics

3 Comments.

  1. Gunnar/Sm2vki March 29, 2013 at 3:13 pm

    Tjenare Mike!

    Skulle det vara möjligt att få köpa ett kort+schema för styrgallernätdelen av dig? Håller också på med ett QBL pa, bilder finns på Eql´s Radiolabb.

  2. sm2wmv March 29, 2013 at 5:20 pm

    Jodå, nog är det möjligt. Jag ska testa först bara att det fungerar som det ska 🙂

  3. Gunnar/Sm2vki April 2, 2013 at 7:44 pm

    Låter bra!

    Hör av dig på in mail/ annars märker jag väl när försöken med nätdelen gått vägen..Jag finns ju i Boden/Sävast så jag kan dyka upp när kort etc. Finns till försäljning.
    /VkI