Mať kvalitný signál je vizitkou rádioamatéra. Pritom na dosiahnutie kvalitného SSB signálu máme k dispozícii aj možnosti, ktoré roky dozadu…
TCVR
A transceiver (TCVR) is a radio that shares common circuitry for receiving and transmitting. In the early days of amateur radio, the receiver and transmitter were separate devices that were operated completely independently. That was not very practical. By combining them into a single unit, a transceiver was created.
Typickými obvodmi transceivera sú zosilňovače, medzifrekvenčné obvody, filtre a oscilátory. Mnohí rádioamatéri – konštruktéri – si transceiver aj v dnešnej dobe postavia svojpomocne. Iní dajú prednosť komerčnej ponuke firiem ako sú Yaesu, Kenwood, Xiegu, Icom, Baofeng, Alinco a Other.
Xiegu X6100 sa teší veľkému záujmu. Predsa KV+6 m SDR transceiver, ktorý vyniká malými rozmermi by si zrejme pod vianočným stromčekom…
Baofeng UV-5R radios are popular among radio amateurs and professional users due to their affordable price and wide range of functions. However, in Germany…
Xiegu X6100 je ultra prenosný transceiver SDR (softvérovo definované rádio) pre KV a 6 m. Vysoký výkon a bohatá funkčnosť je…
MOTTO OF THE MEETING: "AGAIN IN HOLICY!" The 31st international meeting of radio amateurs should be held on 27-28 8.2021 traditionally in the vicinity of the cultural center and sports...
In the last article, I described the interface for TCVR Kenwood TS-870S, which added another mode to our HAM family. I deliver without…
What happens to the signal when it is set high? VA3HDL shows how the level setting affects the signal quality…
What QRP TCVR on 10 bands? The QRPver DC-3001 Minion Mini weighs only 430 grams and measures 100x103x30 mm. Structurally, it uses a phase…
According to available information, Yaesu has discontinued production of the KV+6m transceiver FT-DX3000. This model was first introduced in 2012, so it is relatively…
ICOM announces improved firmware for FT8 mode for TCVR-e IC705 IC7300 and IC9700. It should be the first to be available at the end of…
I will loosely link to an article by my brother Martin, OM1MJ, in which he describes the process by which he managed to get DIGI mods working, specifically…
A very successful AGC circuit is the ND6T, but in some constructions a different connection may be useful. the described AGC circuit uses A244D…
Javier EA3GCY is the technical manager of "QRP Ham Radio Kits", a company that has been producing various DIY kits for radio amateurs since 1990. They are…
Andromeda is a combination of a powerful SDR transceiver with a PC on an Intel i5/i7 processor with Windows 10 and THETIS software. This creates KV...
What is AGC? AGC (Automatic Gain Control) is an important part of every device. The dynamics of the signals coming from the antenna is so great that…
Check out the following SN9D operation video Pretty nice operation, isn't it? But did you notice the ALC indication on the transceiver? Yes, the indicator…
What cheap QRP transceiver for one KV band? QRPver-1 may be the answer. It has dimensions of 103 x 30 x 75 mm…
Anyone who started dealing with SO2R or multi operation with the possibility of working on several bands at the same time encountered the issue of protection...