[Elecraft] K3 and Perseus SDR as a 2nd RX

[Toby Deinhardt]

Hi Gerry,

> There is no need for additional filtering since the Perseus has 9 six 
> pole front-end bandpass filters (1.7 - 30 MHz.) plus a 3 pole low pass 
> for 10 kHz. - 1.7 MHz.)

I hope you don't mind my being at slightly sceptical that a low pass 
filter is enough for serious LW/MW work. If one has a medium wave or 
long wave broadcast stations in the vicinity, then additional filtering 
will almost surely be needed.

Also it will be interesting to read how well the IMD behavior of the SW 
front end filters themselves in such a small enclosure is. Small sized 
toroids can, from what I know, be a weak point in a receiver with high 
dynamic range.

 From what I've heard radios such as the Perseus appear indeed to be 
very interesting but as always, a new technology, like good wine, needs 
time to mature.

vy 73 de toby