[Elecraft] K3 eHam review after 2+ years

[Paul Christensen]

> "I could get a Perseus, or some other receivers and use an Eldad T/R 
> switch.
> This is lower cost than a new tranceiver since it's just a receiver - no
> transmitter...But this choice does have merit."

Unless you are concerned about T/R switching time.  CW QSK and operation in 
the fast *TOR modes would be missing features with such a system. 
Presently, severe latency issues with the Perseus and SDR-IQ preclude their 
use as a serious transceiver building block.

Getting good basic performance from the receiver and transmitter in any 
transceiver design is only half the battle. As rigs become more complicated 
with extensive use of microprocessors and DSP, keeping the system fast, 
frequency stable and under control without introducing noticeable artifacts 
is the other half of the battle to be won.

Many individual designers have created receivers and transmitters with 
stellar performance -- but I can only think of only a few transceiver 
designs that have fully orchestrated the circuitry.

Paul, W9AC