SDR – Software defined radio

Software Defined Radio

SDR, or “software defined radio” is a radio receiver/transceiver made in a way that part of the hardware work is done by software. The software program can be run inside a Personal Computer, embedded system, micro controller, etc.

In a perfect word, a SDR receiver would look like an antenna directly connected to a AD (analog to digital) converter.
However, we do not live (yet) in a perfect word – and the way “things” are vectoring these days we are not going to anytime soon – so the most common SDR receivers are built with a  antenna connected to a band pass filter, a low noise amplifier, the mixer and local oscillator. The resulting intermediate frequency is then converted to digital by the AD converter and after that the software program is taking over doing his magic.
Sometimes there is no intermediate frequency and the RF signal is directly converted to digital (especially for lower bands).

Elecraft KX2

Elecraft KX2Elecraft KX2 new miniature transceiver

Elecraft is shipping now the new 80-10m SSB, CW and DATA transceiver starting from $750

With only 370 gr and 147*50*40 mm this new #Elecraft toy is not a toy at all. With up to 10W of power SDR receiver and great options, KX2 candidates for the first place on you gift wish list: AAT, LI-ion battery, attached keyer paddle, 100W amp and 100W AAT.

This new toy is not cheap at all, but we are waiting for a new price at the end of this year.

Yaesu FTM-100DE/DR

Yaesu FTM-100DE/DRYaesu Digital Mobile transceiverC4FM technology based

Starting August 2015 Yaesu is selling the new FTM-100D dulaband 50Watt transceiver.

The new SF transceiver is supporting WIRES-X – an Internet communication system for radioamateur, Digital GM function – Digital Group Monitor Function, Image Data Transmission, Smart Navigation Function, V/D Mode  – Voice/Data simultaneous communication mode, Voice FR Mode – voice full rate mode, Data FR Mode – high speed data communication mode.

The new digital mobile beast is TX-ing in 2m and 70cm bands and is RX-ing 108-999.99Mhz.

The price is now 399USD.
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