AVT2840 A

The device is a streamlined and modernized version of the AVT hit - the Antek mini-transceiver. The small stability of the VFO generator has been eliminated by replacing the LC circuit with a piezoceramic resonator. For switching the quartz filter, electronic keys were used, a higher intermediate frequency was set, the transmitter stage structures were simplified - these are just a few of the many patches. As a result, a more reliable layout was obtained on almost twice as much printed circuit board. The use of modern integrated circuits has not only improved the stability of the BFO and VFO generators, but has also resulted in a reduction in the number of components, which significantly affects the ease of assembly and commissioning. The final shape of the device was influenced by the comments of several shortwave actuators launching Antosia prototypes - a truly reliable system was created.

The device is especially recommended for beginners and advanced amateur radio players

Selected parameters:

• operating frequency 3630 - 3780kHz (depending on the elements used)
• SSB-LSB emission
• Receiver sensitivity <1uV (for 10dB S + N: N)
• minimum transmitter output power> 4W
• suppression of unwanted sideband> 40dB
• attenuation of the carrier wave> 40dB
• built-in power amplifier, listening to the loudspeaker
• power supply - 12Vdc
• plate dimensions 83x95mm
• printed circuit board and documentation included
  
  Detailed description in
  EdW 9/07