Category: Homebrew

Some time has passed, and a lot has been done so far. Construction Tuning Section First I had to find a way to mount the vacuum condenser on the mounting plate. Because I print a lot in 3D, I had the choice to design and print mounting brackets. Also important to include in the design…

Recently my colleague, Rob PA5RH and I came up with the idea to build an automatic loop tuner. Rob is busy with the software part where I have already started on the mechanical part. As loop, Cellflex 1 1/4 inch Coax cable is used. This has a (copper) outer diameter of +/- 38mm I want…

As I have succesfully built the ATU-100 kit, I decided to go for a beafier ATU kit. Some weeks ago I received a kit from Ali Express. The ATU-1000 Automatic Antenna tuner kit. It is based on the same design of N7DCC, but the board is designed by EU2AV. The same firware is used as…

Recently I purchased a ATU-100 Antenna tuner kit from Aliexpress. I have purchased this kit because the internal tuner of my IC-7610 has a tuning limit of 150ohms / SWR <3:1 as most internal tuners do. My previous IC-7300 had the tuner modification which extended the tuning limit, so tuning my antenna was no proplem…

How to get the CC41-A to work with your applications. I have bought several of these fake HM-10 modules, called CC41-A Left one is the original HM-10 module, in the middle is the fake CC41-A one. Anyways, besides it is a fake one, the major problem i bumped into, was the fact It would not…

Last week I have received a nice package from India 🙂 I have purchased a uBitx Transceiver from http://www.hfsignals.com It is a pre-built basic direct conversion radio designed by Ashhar Farhan VU2ESE. The thing that pulled me over to buy the kit is the possibility to connect a Nextion touchscreen display to it. I have quite some…

To be able to calibrate the Analyzer properly (OSL), we need accurate loads. It is also important that the loads over the entire spectrum also function well, show no reflections or have other characteristics than a good load. This is quite easy to make yourself. 

I have always wanted A good analyzer for HF up to VHF (2m) In the past I have build many Antenna Analyzers started with: Antan Analyzer VK5JST Antenna Analyzer Toghether with Jarek SP2SWJ we have built the BIGVNA MAX5 & MAX3 Big VNA Max 5 Max 3 Some weeks ago while I was surfing the…

Last week I have constructed a new antenna system for HF operations. 3 Years ago, I started with a 2 band FAN Dipole. for 10m and 20m. I have enjoyed operating with this antenna very very much. The only thing that was bothering me was that I could not operate on 40m. The lack of…