Category Archives: Electronics - Page 13

Time to get going again

I’ve been having it a bit slow lately. Haven’t really had much motivation to work on any projects which is something that usually happens to me during the dark winter month January and February. Even though I’ve still done some smaller stuff like some PCB design and programming its not my normal tempo. I have also been working quite a bit extra to get more money for the projects coming up. I have even received a couple of questions lately if I’m OK since there hasn’t been any updates lately. However now I’m feeling a lot more motivated again and this morning I woke up feeling like going to work and work on the QBL amplifier.

I did start with the RF-deck. I had said I wanted to fully complete the power supply before starting with the RF-deck but I am missing some parts and can’t really do much on it right now, so I decided to get going with the RF-deck. I started drilling all the sheets I had cut earlier and also made a shelf for the “floor separation” in the amplifier. I also tried to lay out some different combinations of how to position C1, C2 and the L + tube in the amplifier and finally decided that I will rebuild the roller inductor a bit and put them the normal way as in most amps. That way I can have some knob going out the front plate as well if wanting to tune them manually.

We will be working Russian DX next weekend as M/S and plans are also to work WPX SSB in the end of March with LB3HC coming back to us as guest op, also as M/S.

QBL work continued

I’ve spent some more time in the labs at work getting more stuff done on the power supply for the QBL amplifier. Today I mounted some fuses and also pulled more cables, getting closer and closer to having the power supply done. I still need to get the screen transformer that my dad picked up but otherwise I have the parts that are hard to get hold of. I need to buy a 3-phase 16A type outlet to get the back panel milled up and I might use a regular 3-phase outlet also to connect the fan for the amp which I will put externally so it can be mounted at a suitable location since the amp will be put in the basement @SJ2W in the future.

QBL amp front plate milled

I haven’t gotten much done lately except programming and playing with the K3 remote. However today I went to work and did a bit of work on the amplifier. However a headache stopped me so I went home. Hopefully I’ll get more done tomorrow. I did mill a plate for the power supply front which holds the ON/OFF switch, HV supply fuse and also a couple of lamps that will indicate HEATER on and HV on.

Various stuff

Not much has happened because I’ve been sick most of the christmas holiday. However, yesterday I managed to go to work and continue working on the power supply for the amplifier project. I’ve been playing with the radio a lot too, working the new special call we have SJ2014ECC to celebrate that UmeĆ„ (closeby town) is the European Culture Capital this year, more info can be found on http://www.fura.se and on http://www.qrz.com/db/sj2014ecc