Projects

Power Supply Modification

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

Modified Power Supplies Documentation [2'097 KB]

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

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

Main Goals:
- reduce overall noise with an excellent grounding
- remove all small 220V noisy 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
- new grounding concept based on a main copper plate bus
- new computer (USB & RS232) and network cabling
- etc.

SDR-Play RSP1A as Pandapter for the IC-7700

SDR-Play RSP1A as Pandapter for the IC-7700 (Dec. 2017)

It's just amazing to see the whole band on the panoramic screen while connected to the IC-7700 over Omnirig. Download the SDRPlay Panadapter Quide for many types of transceiver (ICOM, Kenwood, YAESU, etc.) here

The first version I was using only a BNC T-connector to feed the signal to the RSP1A and back to the IC-7700 RX-IN. I was told that in addition to the >3db signal loss I ran the risk of introducing all sorts of unwanted signals into the IC-7700 receiver. So I was looking for a powered lossless 2-way active RF signal splitter and found the "Boni AntennaJet AAS300D" from Bonito Hamradio. Installation was simple. I connected it to my central 40 Amps 13.8 V power supply.

Boni MagaLoop FX Active Antenna Test

Boni MagaLoop FX Active Antenna Test versus my Inverted-V Antenna (January 2018)

I made the tests at my home QTH to compare the signals with my current Inverted-V Antenna on top of my roof and the new Boni MegaLoop FX Active 80cm Loop on my balcony just 3 meters below the Inverted-V antenna.

Summary:
It seems that my Inverted-V Antenna is performing great compared to the Loop. I've got no advantage from the Loop in order to receive a stronger or a better signal with less noise.

Boni MagaLoop FX Active Antenna Test versus my Inverted-V Antenna (January 2018)
I made the tests at my home QTH to compare the signals with my current Inverted-V Antenna on top of my roof and the new Boni MegaLoop FX Active 80cm Loop on my balcony just 3 meters below the Inverted-V antenna.

Here are the audio files (13. Jan. 2018, 10:00UTC):
14.222 MHz - USB - 59 - CT1EHI - Loop [64 KB]
14.222 MHz - USB - 59+10 - CT1EHI - Inverted-V [187 KB]
14.222 MHz - USB - CT1EHI - Loop - Inverted-V - Loop [237 KB]

14.289 MHz - USB - 59+10 - LZ1833PSS - Inverted-V [147 KB]
14.289 MHz - USB - 59 - LZ1833PSS - Loop [228 KB]

7.131 MHz - LSB - 59+20 - DL8MLD/P - Inverted-V [307 KB]
7.131 MHz - LSB - 59 - DL8MLD/P - Loop [303 KB]

Summary:
It seems that my Inverted-V Antenna is performing great compared to the Loop. I've got no advantage from the Loop in order to receive a stronger or a better signal with less noise.

ICOM SP-34 Speaker Upgrade

ICOM SP-34 Speaker Upgrade

Your speaker sounds better with PHITS Traditionally, communication speakers have been designed without following acoustic criteria to obtain the maximum sound quality. Their main defaults are low stiffness and the resonance of the metal cabinet. PHITS is a Phonema kit developed to acoustically improve communication speakers.

Thanks to the combination of different densities materials, a more stiffenes box is achieve and reverberation is eliminated in more than 47 dB. The result is a pure, clear and a more inteligible sound.

WebCam on the roof (Dec. 2017)

WebCam on the roof (Dec. 2017)

To see the panorama view from my QTH (JN47FE) - such as Mount Pilatus direction Lucerne (Cam-Typ: HIKVISION DS-2CD2152F-IS)

Please click on the live view link in the footer to see the live view from my QTH.

Flex 6600M

Flex Radio 6600M

Flexradio FLEX-6600M
1. New Remote Concept using iPad or iPhone like a remote station
2. Fully proofed SDR Technology
3. Four independent VFO at the same time
4. Use for FT8 and JT65

Flexradio FLEX-6600M
Broschure [2'019 KB]
SmartSDR User Guide v2.1.30 - 29. January 2018 [8'117 KB]

DMR

DMR

I started my DMR Radio expierence in June 2017 with the following support and equipment.

Equipment
- TYT MD380 GPS DMR Digital Radio with experimental firmware
- AnyTone AT-D868UV Dualband DMR/FM
- SharkRF openSPOT2 (6.1.2019) with WiFi
- mini WiFi Router MEGA DV (not in use)

openSPOT Hotspot Mobile Solution

TYT MD-380G GPS DMR Digital Radio

BlueDV is a free software that runs NOT on the Raspberry Pi but on an iPhone or Android phone or tablet. The BlueDV app controls the Raspberry Pi & DVMega. The Raspberry Pi and the DVMega HF module are thus "dumb" and follow only the instructions, which come from the Handy / Tablet (BlueDV App). The overall intelligence / handling is in the BlueDV app, NOT on the Raspberry Pi. Thanks to HB9PJT for his support and patience to get started with my DMR-Radio and to David PA7LIM who made his BlueDV App available for iOS, Android, Windows, Linux etc. BlueDV Hotspot with the iBlueStackMicro+ Board for iOS (US$ 149.-)

BlueDV Hotspot with iPhone 6S

Must have links:
- MD-380G Experimental Firmware v13.020 and Codeplug from SwissDMR.
- TYT MD380 GPS DMR Digital Radio with experimental firmware (German User-Manual [324 KB] by DG9VH)
- SharkRF openSPOT
- mini WiFi Router WiFi Router
- Brandmeister Network
- DMR Dashboard Germany
- TYT MD-380 Tools
- Codeplugs for Switzerland DMR-Zone
- DMR Tipps in German by OE7BSH
- MD-380G programming CPS Software
- MD-380G software tools by GB7FO
- MD-380G Contact-Manager by N0GSG