My Commodore 128 repair journey

What could go wrong if you buy a broken retro machine for cheap just to repair it and make it shine again with VIC-IIe colors and sing with glorius 3 channel SID chip? It’s not as easy task as I thought earlier and this repair went for much longer and costed me way more as compared to my previous Commodore 64c repair. Despite all the time, money and effort I put into it I don’t regret it at all. This repair allowed me to learn A LOT about electronics and electronic repair.

Commodore 128 in it's gloryMy mighty fixed Commodore 128 in it’s full glory.

Read More

Fixing Airspy HF+ Discovery VHF interferences issue

A few years ago I bought the original dual port Airspy HF+ and was amazed by it’s reception quality. I’m using this sdr receiver up to this day for both HF and FM DX-ing and couldn’t find any other affordable yet so good receiver. Back in 2021 I bought Airspy HF+ Discovery as a replacement in case my dual port receiver is struck by ESD during lightning storm or something else.

Airspy HF+ Discovery

Most noticeable differences are lack of metal casing which if present, could be useful in noise and interference reduction, and it has only a single SMA port which is fine for simple setup with single wideband scanner antena, but it’s definitely problematic for someone using separate HF and VHF antennas for better gain and performance. Similarly to dual port model, this device also uses micro-USB port which can potentially cause some troubles. If you stumble upon a connection problem when your computer doesn’t detect a device, or does detect but for some reason SDR software can’t connect to it, please check your usb cable. In my experience even good looking cables with no visible damage to the plug can be faulty, that’s why I’m using my trusted high quality cable filled with ferrite chokes/beads.

Read More

Dell Wyse 5070 – Home Server

Recently I have upgraded my home server to Dell Wyse 5070 Extended. This is a very interesting low power computer in a small form factor. My unit came with Pentium J5005 CPU, 8 GB DDR4 RAM (2 × 4 GB), an Radeon E9173 PCIe graphics card and a M.2 SATA SSD drive. The case is really nice, but the Windows sticker is not. There are many ports around, but I’m not going to use most of them anyway.

My previous setup based on Celeron J1900, 16 GB RAM and Intel 730 SSD has been working fine for 7 years with many services, including website. I decided to build a new Linux home server, which could also be sufficient for such a long time, while still keeping the power consumption at a low level.

Read More

Nowa era telewizji cyfrowej w Polsce

W momencie pisania artykułu jesteśmy dosłownie na półmetku wdrożenia nowego standardu nadawania naziemnej telewizji cyfrowej DVB-T2 HEVC. Parę tygodni temu zakończył się drugi etap, którego sam mogłem doświadczyć, a już wielkimi krokami nadchodzi kolejny trzeci. Co oznacza ta cała zmiana standardu? Jak się przygotować do zmian lub jak przywrócić możliwość oglądania telewizji, gdy okazało się, że niestety nie byliśmy przygotowani do zmiany standardu. Wszystko postaram się Wam opisać w tym artykule o nietypowej jak na stronę tematyce.

Read More

Bandscan w Barcelonie – 2022-05-02

W związku z wyjazdem służbowym postanowiłem zabrać ze sobą radio Xhdata D808. Radio to cechuje się nadzwyczaj dobrą selektywnością na UKF, możliwością przestrajania o 10kHz oraz posiadanym RDS, w dodatku jest kompaktowe oraz lekkie, także świetnie nadaje się do podróży. Przy okazji zabrałem również ze sobą zwijaną antenę Sony AN-71 zapinaną na antenę teleskopową, która ze względu na potworny QRM na niższych pasmach KF raczej się nie przydała.

Read More