Projects

Charly 25 Allband HF & 6M Transceiver

This is a short introduction for our Charly 25 Allband TRX, for the first time with updated PC board with Microsoft Windows 11 and Core I5 (if desired also Core I7), 1TB SSD and 16GB or 32GB RAM.

Our transceivers are the result of 9 years of teamwork of amateur radio operators of the OV's Erding C25 - hence the name Charly 25.
Edwin (DC9OE) for Hardware, Markus (DG8MG) for Software and Erwin (DL1FY) for Testing.

ICOM IC-7300 Transceiver 160m to 6m with internal Tuner

The ICOM IC-7300 is great SDR Allband Transceiver with 100W and a built-in Antenna tuner and a great Waterfall Display.

Ideal for vacations with a vertical allband antenna (e.g. JNCRADIO MC-750 portable HF GP or a G5RV or the Gipsy 7-30MHz Coil Dipole).

Hilberling PA HPA-8000B-54

It was time to replace the SPE Expert 1.3k PA with tuner with the professional Hilberling PA HPA-8000B-54.

On June 24, 2022, I bought this PA at the Ham-Radio in Friedrichshafen directly from Hilberling.

The Hilberling PA will then be put into operation with the Flexradio 6700 and the Charly 25 Transceiver.

Audio and MIC Distribution Dashboard for the Shack

The idea was to have an Audio- and Microphone-Distribution where I can choose between different Audio-Inputs and -Outputs and to switch the MIC (Headset) to the right ICOM-Transceiver and the Flex 6700 Transceiver. And an additional Adam Hall PCL 10 Pro Power Conditioner for all 230V devices in the shack will decrease the noise.

So I'm able to switch easy from the PC (SDR Radio Console, Flex 6700, HDSDR, WebSDR, etc.) to Flex 6700, IC-9700 and the Charly C25 Transceiver for OSCAR-100 or LEO/MEO-SAT operation using the Rode Studio MIC or the modified wireless Jabra DECT Headset or the Heil Pro Set 6 (iC) Headset.

12-Band MIC EQ for all Transceivers

The EQ is a versatile sound processor. You can connect any microphone to it (even a Condenser one requiring 48V phantom power) and make your studio-quality signal.

It works excellent with my Flex 6700, IC-9700 and Charly C25 Transceiver. I'm uisng the Rode Studio MIC, the Heil Set Pro 6 IC or the wireless Jabra DECT Headset.

230V and 13.8V Power Distribution

It is very important that the 230V power consumers in the house and in the Shack are de-energized (EMC/EMI).

For this purpose I use various solutions including measurement of power consumption. EMC/EMI filters, ferrite cores, 230V online uninterruptible power supply, Adam Hall PCL 10 Pro Power Conditioner AC Noise filter to reduce interference from radio frequencies and electromagnetic interference, etc.

Jabra 920 Pro DECT Headset

The Jabra Pro 920 DECT headset is very suitable as a headset for all transceivers. In my case for the IC-9700 (QO-100), Flex 6700 and Charly C25 Transceivers. Together with the EQ of UR6QW modulation is perfect. All Jabra functions such as mute etc. work without restriction and I can now move freely up to 150m away from the transceiver and also be on-the-air with the VOX function.

Thanks to Leander HB9RMW for the engineering.

Remote Control of Expert PA 1.3k over Internet

The goal was to remote control our SPE Expert 1.3k amplifier at our Remote DX site in the Swiss Alps for 2 operators (HB9RYZ and HB9CQK) "simultaneously" with the SPE Expert Term software via the Internet.

Project Clean up my Shack (Sept. - Nov. 2017)

Main Goals:
- reduce overall noise (RFI) with an excellent grounding
- remove all small 220V noisy switched power supplies
- use only high-end components
- for best usability
- for easy maintenance

Main Workstreams:
- new Shack furniture
- new AC and DC (13.8V and 5V USB) Power Distribution and cabling
- intergrade a RFI filter in to your main AC
- use a lot of folding-ferrite (on every cable e.g. USB, serial, network, etc.)
- new grounding concept based on a main copper plate bus
- new computer (USB & RS232) and network cabling
- etc.

Modified power supplies for less noise

Main Goals:
- reduce overall noise with an excellent grounding
- include a primary 220V main power filter
- include a countered coil with a capacitor in the output power line (13.8V and 5V)
- remove all small and cheap 110V/220V noisy power supplies