[Elecraft] K4 TX Antenna port count and usage question

[Wayne Burdick]

Wow, Paul. Between the QTH, food, beer, and your dual KX3-PX3 setup, I'd say you have it made. Of course the K4 will eliminate 90% of the boxes and cables.

Surely you didn't get trapped down there semi-permanently by Covid-19? Rough life :)

Wayne
N6KR



> On May 15, 2020, at 1:20 PM, Paul Gacek <w6png at yahoo.com> wrote:
> 
> 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
>> 
>> 
>>