[Elecraft] K144XV for K3 NF = 1dB

[Eric Swartz - WA6HHQ, Elecraft]

The K144XV module's RX architecture is almost identical to the external 
XV144 transverter. Same pre-amp and 2nd stage. Like the XV144, we will 
include instructions for removing the 2nd gain stage if you need to for 
optimized dynamic range (such as with antenna mounted pre-amps etc.)

We are now only using a 28 MHz IF with two different LO xtal frequencies 
to cover the complete 144-148 range, as per Wayne's earlier posting.

73, Eric  WA6HHQ


Giulio Pico - IW3HVB wrote:
> It isn't exactly true that NF is unimportant on tropo.... otherwise no 
> one would be using a mast mounted preamplifier.....
> The main issue then is preserving the dynamic range, as you pointed out....
> On the XV144 module is mandatory to remove the second rx stage to do 
> that in this case.
> The point is, how many stages the new module have? Is the second one (I 
> assume that it is there) easily removable or bypassable?
>
> These are my two cents on the topic.
>
> 73 de Giulio IW3HVB
>
>