I have learned that it will be best worked with short RS232 cables and full wired, no crossing cables or what else.įor the connection to the RJ45 (Microphone) connector you have to pay attention, this is 180 degrees rotated – PIN 8 is on the left of the RJ45 !!īoth GM950 ( UHF and VHF) transceivers can be handled with this interface, the best software to use is version r2.00.00. The original design is made by IK5BZH, so that OM must have the credits to find out this small interface ! As classes were not present, we did not perform any further interoperability tests. In additions, properties had lost its hierarchy. When opened with OilEd 3.5, all properties (slots in Protg) were present but none of the classes. The software you can get from the website in the UK (see ‘Ham links’) The ontology was exported from Protg 2.0 beta in RDFS format. In the schema you can see that the use of a 9 Volt battery will be oke, but when you make a stable 5 Volt on the PCB the communication will go to be stable to connect to the transceiver. In the green circle you see the small modification on pin 9 and 8 of the 9 PINS RS232 connector. The yellow line’s on the back of the PCB, will show the line cuts needed to place the parts right on the board.
I had made the PCB layout on the test board, the design is so small that you can easy do this (see picture). This small interface will cost you about 10 Euro, and will give you much fun !
Today I have finished the small RS232 interface to manage the Motorola GM950 UHF/VHF transceiver. If you need more technical information, pse send me a request (see contact page).ĪSAP I will make more information available with weblinks,(sound) files and screendumps. v2.0.9.0 - bugfix at RDS message rendering, causing delays during. The picture(s) below will give you a nice view how I made it together. introduced a new color definition for EON TP available - minor fixes and adaptions. The next days I will bring the SDR-dongle together with the LNA in a metal box, to reduce more unwanted noise (shown on the last photo). The OS is Windows XP (now Windows 7 Pro) and running on a portable/fixed computer. I’ve tested a few SDR applications, but the best results I getwas with the SDR-Console v2.1 beta software and for the RTL dongle the Ezcap USB 2.0 driver. A review of the regulatory and technical basis for beta dosimetry is pre- sented as background information for understanding the. With a gorgeous interface and drag & drop simplicity no need for complicated options. Easy to Use - built from the ground up, Permute is a perfect example of what a Mac app should be.
* added a ring-coil arround the small cable to reduce noise. Eon Timer 2.7.2 Free For Mac Pc Eon Timer 2.7.2 Free For Mac Version Name Size Uploaded by Downloads Date Download repository: 363.4 KB. * removed the metal part on the USB connector. * 10 meter RG58 in coil arround the RTL-dongle to reduce noise and grounded to the USB.
In short I had used the next mods (1st test fase)
The last days I’am active with the modifications of the RTL-SDR dongle to receive the Cubesats.