Lately I’ve been working a lot with Baluns and UnUn’s and Chokes. I always needed a new housing for that. These are ultimately quite pricey and sometimes difficult to obtain. That’s why I spent an evening drawing. And I have drawn a number of variants of Utility boxes. I print these boxes with PETG filament,…
Category: Homebrew
CI-V Tuning aid for ICOM Radios
Updates 17-04-2024: Firmware v0.2 Almost every HF radio from ICOM has a Tuner connector, you know that white 4-pin connector at the back of your radio. Via this connector you can give a command with a switch so that your radio sends out a nice reduced carrier to safely control a tuner. For most 100-200W…
Signal Splitter box
Due to illness I had to enjoy myself a bit at home with the moments when I felt a bit good. I had small projects that were already finished but still needed to be build into an enclosure. The Signal splitter 1 was one of them projects. I once ordered a package of PCBs from…
Portable ATV Receiver
A while ago I came up with the idea of building a portable ATV receiver. Important features of this receiver had to be: 1. Large screen with real noise (no fake noise) 2. Of course with built-in battery with builtin charger. 3. PE1ICE MiniATV receiver as base. 4. Switchable bias voltage. 12/18V, and OFF. 5….
New Symmetrical Antenna system for HF
I’ve been thinking about setting up a symmetrical antenna system for a while now. That is, Ladder line fed dipole. I did a bit of measuring and was able to stretch 2 x 9m of wire. I bought a new piece of 10m 450ohm ladder line a while ago. This was too long, but before…
Universal DCD for 1200bd Packet modems.
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…
New Portable setup
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…
Working satellites portable
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…
Homebrew Manpack for my IC-705 and accesoires
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….
ATV Receiver project
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…









