Category: Homebrew

Since I’m working with packet again, you encounter all kinds of problems and then have to solve them again. The same now. I recently purchased an AEA PK-88 packet modem. Only this one has no Hardware DCD. So you have to use your Squelch on your radio. To work with an open Squelch you need…

The summer of 2023 has ended, as well as portable operations. What I have noticed during my activations is that QRP can be a lot of fun, but also too challenging. If you want to continue to participate in the vast majority of stations, you will have to do your best to make yourself stand…

On July 26, 2023, I gave a demonstration at the NVRA on how to connect via one of the TEVEL satellites. We were lucky, because on this evening we had a nice pass with 60+ degrees elevation. The hardware used for this evening: Radio: Icom IC-705 with 5W controlled with PSTRotator for doppler correction. (this…

If you have some time on the weekend to work portable. then you don’t want to spend a lot of time setting up and connecting my equipment. especially if this is the same setup every time. I had several of the same fish carrying bags lying around. So I had to do something with that.…

Some time ago, Hans PE1ICE developed a compact ATV Receiver that could demodulate FM audio and Nicam audio also. Link to project: https://nvra.net/index.php/nicam-decoder/pe1ice-nvra-mini-atv-ontvanger/ All that was needed was to install the receiver in a housing. In the first housing I had based on a supply voltage of 12v. I also had a video splitter built…

Reception at 10Ghz can be quite a challenge, especially if you can receive the station to be received on the edge. I really had the problem that the signal went up and down even with a little bit of wind. The problem was that the mast on which the dish is placed is in a…

A friend of mine Gertjan PA3FZB who is crazy about 3.5m broadcast “amateur” stations 😉 recently came up with an article about a HB9CV design for 3.5m. He asked me if I could build it for him. and so it happened 🙂 On the internet there is a very handy calculation tool to calculate an…

First attempt to build a 23cm Yagi I had been looking for an antenna for 23 and 13cm for a while now. As I wanted to listen to SSB and Amateur Television stations. Now I had found some factory antennas online. Only the price.. hmmm.. For these prices I can build several antennas myself 🙂…

Simple conversion description MX62M with BNC Connectors UPDATE! 02-07-2023 I have replaced the BNC Pigtail cable with a fixed BNC Panelmount version instead to be more flexible.   Recently I was looking for an easy way to build a Diplexer for my Icom IC-705. My eye fell on the Diamond MX62M Diplexer. This because with…

Update! 30-12-2022 It’s been a while since I gave an update on the Magnetic Loop controller project I’m working on with Rob PA5RH. The purpose of the Loop Tuner was that it can tune automatically, and uses the internal SWR meter of the connected radio, and reads this via CAT. Connection will eventually be possible…