[Elecraft] K4 TX Antenna port count and usage question

[Paul Gacek]

Wayne

Thanks for the super quick and succinct reply.

The 3rd TX port is (for me at least) a huge boon and having at least 2 RX opens up a ton of possibilities.

I’m really looking forward to the K4.

Here is a blog post of my continued efforts to find a sweet spot between functionality and portability using two KX3 etc.

https://nomadic.blog/2020/05/08/of-cannons-beer-and-paradise/

Paul
W6PNG/M0SNA 
www.nomadic.blog

> On May 15, 2020, at 12:34 PM, Wayne Burdick <n6kr at elecraft.com> wrote:
> 
> Hi Paul,
> 
> 
>> I think I’ve read that the K4 will have 3 TX antenna ports and possibly up to 5 RX antenna ports.
> 
> The KAT4 ATU provides three SO-239 antenna jacks. Any of the three antennas can be selected for transmit. By extension, this becomes the default antenna for the receivers, unless you choose a different receive antenna. ATU LC settings for all three antennas are stored on a per-band basis, and each band can have up to 32 different stored segments.
> 
> There are two receive antenna inputs, RX ANT in 1 and RX ANT in 2.
> 
> In addition, either of the two KAT4 antennas *not* currently being used for transmit can be used as a receive antenna.
> 
> In summary, each receiver has access to any of five antennas:
> 
> - KAT4 ANT 1/2/3, either by sharing the TX antenna or by using one of the KAT4 non-transmit antennas
> 
> - RX ANT IN 1 and 2
> 
> For internal transverters, there's a fourth SO-239 (or an N connector). This jack would be shared between two more transverter bands if applicable.
> 
> 73,
> Wayne
> N6KR
> 
> 
>