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Meine QRP Funkgeräte für den Amateurfunk. Das war echt ne Überraschung, als ich im Internet vom Update des FT-817 von Yaesu gelesen hatte. Dass da mal was kommen würde, war klar, aber irgendwie hat mich der Zeitpunkt überrascht,. Das Pico Paddle am Yaesu FT-817.
A bridge between two worlds. My best Travel-Loop crafted by John PD7MAA. In former times I had severe antenna restrictions so I bought a heavy Loop and it worked. But when I managed to put some wires in the garden and the signals were about 1-3 S-units above, I switched. Beside that I was enjoyed by constantly re-tuning the antenna.
Forgot Password or Username? Deviant for 2 Years. This is the place where you can personalize your profile! By moving, adding and personalizing widgets.
These are quick and dirty notes of my experiments. A balanced line tuner for open wire feeders and doublet. A 25 watt dual-band linear. A simple single ended linear you can build in an evening. These are the details of making it work on 40 meters and the errors on the PCB. That said, all .
Воскресенье, 14 июня 2015 г. For example, below picture DTMF signal 697 Hz 1209 Hz, it is code digit 1. And now look at the frequency domain FFT. Here is the standard connection scheme IC HT9200A 8pin package and HT9200B 14pin package Holtek. Here is the code table for this table, you can learn what you need to send a code to get the desired DTMF signal.
Retape dans le champ ci-dessous la suite de chiffres et de lettres qui apparaissent dans le cadre ci-contre.
A notch filter for phase noise measurment. When doing these measurements, reducing the noise figure of the spectrum analyzer, and knowing the inserted gain is important. I use a module with a ERA-2 MMIC mounted in a die cast box with extended filtering on the DC input. This is built and tuned for a flat bandpass before the notch.