[Elecraft] K3: new feature idea / question

[Geoffrey Downs]

A good thought Brian. My experience of two such noise cancelling devices is 
that, depending on the type and direction of the noise, they can be very 
effective in improving the signal/noise ratio although there is some 
insertion loss so weak signals are sometimes lost. I always have one 
connected to the K3 for use as needed. As I understand it the phase delay of 
the signal from the noise antenna and its mixing with the signal from the 
main antenna needs to take place before the signal gets to the receiver, so, 
with an external device at least, two receivers are not needed. However, I 
have been surprised for some years that no rig manufacturers build such a 
feature in. Perhaps it could somehow be done with firmware in the K3 using, 
say, the RX ANT or the AUX input for the noise antenna?

73 to all

Geoff
G3UCK


----- Original Message ----- 
From: "Brian Machesney" <nekvtster at gmail.com>
Subject: [Elecraft] K3: new feature idea / question


>I was just reading about the differing levels of success that people have
> with "active noise cancelling" units. It occurred to me that one should be
> able to achieve the same kinds of results using the second RX and separate
> antenna in the K3 - with the addition of control over the phase (delay) of
> the arriving signal.