Eric Oosterbaan

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RTL-SDR dongle and Raspberry Pi 512 Mb

SDR software, main screen

Today finished the soft- and hardware solution with the RTL-SDR and RPi. The main idea is to use the low-cost ($25) RTL-SDR dongle on the RPi and connect the RPi with a portable computer, with the SDR-client software on it. The test antenna is the 3-element HB9CV antenna only for 144-146 Mhz. This means that …

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Building the Taurus case

In the next pictures you can see the result of the new Taurus case. You can find the case at ‘Otto schubert GMBH‘ (click on the name), and use the Art. Nr. 228. On the same shop you will find adds to make the box complete. First I started with the front, this is made …

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Motorola GM950 small RS232 Interface

Back of PCB Motorola

Today I have finished the small RS232 interface to manage the Motorola GM950 UHF/VHF transceiver. This small interface will cost you about 10 Euro, and will give you much fun ! I had made the PCB layout on the test board, the design is so small that you can easy do this (see picture). The …

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Repaired new bulb in FC-757AT

Bulb for the FC-757AT

Today I have ‘repaired’ the small bulb lamps in the FC-757AT of Yaesu. But the result is a little bad. The bulb’s should be ready for about 12 V, but the bridness is not good! If you have the correct bulb’s for the FC-757AT, please contact me ! On the pictures you can see the …

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LED bar S-meter

LED bar S-meter

The small project, LED bar S-meter, is active. I found the schema at the website from F6BQU. The schema is very easy and the result is nice (see the pictures) I’ve used to test the LED bar with the signal generator (function generator). The next I have to connect the LED bar S-meter on the …

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Taurus receiver board is ready for test

Taurus receiver ready for test

Today the receiver is ready in his first stage. So far known the mods are used and the first QSO is recorded (see *.mov). The next step is de finetuning to hear the stations more easy, have to check the filters and potmeters!

Rotor management extra info by PE1ANS

movie

The rotor soft- and hardware you can find on this site is in the development fase. PE1ANS (OM Jan) had picked up the mean time stage of the development fase with his own few on the software. I nice small movie will show an error in the source code, when you push the button to …

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