– «Вы говорите кодом Морзе?» Иногда я задаю этот вопрос корреспондентам после обмена обязательной информацией, что типично для большей части связей — RST, NAME, QTH …. И совсем не многие подтверждают готовность «поговорить». Известно, что большинство операторов записывает на бумагу передачу корреспондента, что исключает диалог или делает его похожим на разговор двух человек через переводчика.…
Lionel, F1JRD has developed a state of art SSPA for 144 MHz that delivers up to 1300 Watt output with just about 3 Watt input. Just a single brand-new transistor that was released in November 2010 from freescale is used in this PA. As this transistor costs just below 240 Euro (320 USD, 200 GBP)…
Can be used with reduced efficiency up to 150 MHz Principle of operation: Usual internal tuners or external tuner only have a limited impedance range. The matching of a short wire (short in comparison to the wavelength) with it’s high impedance is usually not possible. Further the wire is usually outdoors, the tuner sets in…
I’ve installed my “PERSEUS” SDR Receiver as a Server ONLINE. Now any user can connect and controlling my Receiver over the Internet. You need just to Download the Last new 4th Version of the “Perseus” Client under Windows OS. For Internet surfing you can use this application even without SDR Receiver. Also I can simultaneously…
This is a review based on real-life operation of the TS-590S from Kenwood. If you are looking for dynamic range measurements, please have a look at Rob Sherwood’s receiver test data. Note that the dynamic range at 2 kHz spacing is irrelevant for SSB since the transmitter IM is always stronger than that; it…