[Elecraft] Why is KX3 phase noise so much less than the K3 ?

[Don Wilhelm]

That is why I try to encourage the local Field Day group to use only 
Elecraft gear.  Even though we do not typically operate more than one 
transceiver on a single band, the YKI types can cause problems on other 
harmonically related bands.  We used to have a Yaesu FT-900 on SSB, and 
it caused problems.
Typically we are class 2A with a GOTA station.

73,
Don W3FPR

On 4/2/2014 11:06 AM, Matt Zilmer wrote:
> It's easy to demonstrate this.  My real-world setting is Field Day,
> and the example is actually what my team experienced.
>
> Take four rigs in a Field Day setting, within 100 yards of each other.
> Make sure one of them is a K3, and the others are Y/K/I types.
>
> On the same band, any of the Y/K/I rigs will create so much wideband
> [phase] noise on transmit that none of the other rigs are usable on
> receive.  Transmit on the K3 and all the other rigs are usable on
> receive (same band, mind you).  No BPF required in this case.
>
> This is very real-world.  It's also the reason DXpeditioners use
> Elecraft products in close proximity with no ill effects.  Field Day
> is just my Regular Joe example of the same thing.
>
> Yes, there is a huge difference - not just a statistic for the charts.
>
>