Mon DU1FV

  Erwin Hackl OE5VLL said "How it came about: Due to a momentary idea, I bought a defective FT757GX2 on ebay. In addition, there was the statement "Frequencies are displayed, noise comes from the loudspeaker, no test option". Of course, you can get such a device much cheaper than a fully functional one, but it needs to be repaired and I wanted to accept this challenge. First function tests: A first simple reception test showed that the device apparently works, but a station that was well received on a comparison device could not be heard on the 757. It soon turned out that the receiving frequency deviated from the displayed frequency by a few kHz. This made it clear that the crystals that determine the frequency were already showing major deviations due to their age of around 30 years. For common crystal oscillator circuits, this means that the series capacitance must be reduced (parallel to the tuning capacitor). Frequency processing: If you start to “crank” the frequen...

A UP ERG DX1UP Howto for installing Droidstar (formerly "dudestar") on a Win 10 pc to run DMR (Digital Mobile Radio). Jan 14, 2023 Intro This app serves to emulate radio hardware that allows you to talk to other licensed radio amateurs around the world. In this version, the app will use the registered radio callsign of the UP ERG. Station identification is mandatory. Anybody using this app should identify at least once every ten minutes by saying "This is DX1UP delta x-ray one uniform papa" while talking and identify again at the end of the conversation. 1. Download 64 bit build from dudetronics.com 2. Run the executable on your pc (windows might complain but choose "run anyway") 3. In the main tab, specify DMR as mode in the first dropdown list on the right, and choose the brandmeister master server name from the drop down list [use BM_5151_Philippines], and specify the talk group id (TGID) [here you have a choice... this is like the "chan...