[Elecraft] K144XV for K3 NF = 1dB

[Alexandr Kobranov]

Let me ask - was +TX signal (9-12V) on centre pin of BNC included in 
future plan?
This "option" (one internal jumper at least) is very practical for 
most of (in EU :-)) used transverter system control during FD etc.

And thanks for all so big job with Kx, Px, ... development!!

73!
Lexa, ok1dst
K3/10 #727

Eric Swartz - WA6HHQ, Elecraft napsal(a):
> 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
>>
>>   
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