[Elecraft] K3S: Need SO2R Antenna Switch Recommendations

[David Decoons]

The 4O3A 2x8 Antenna Genius now uses v4 firmware. All settings programmable via Windows based app. No need to set dip switches. You can have different radios on A or B port. You can program one or more antennas per band. If one antenna per band then antenna switching becomes automatic.

It supports BCD from Elecraft K3/K4. Bob, N6TV makes the Y Box and custom Elecraft to 4O3A wired 15 pin cables. I bought a Y box and cable for my K4D. Great quality from Bob.

You can also control the switch from the app or via the API using software such as Node Red.

If you need further info on the 2x8, ask via direct e-mail  or here.

73
Dave wo2x

Sent from my iPad

> On Aug 31, 2024, at 10:30 PM, Jim Brown <jim at audiosystemsgroup.com> wrote:
> 
> Hi Dick,
> 
> The 4O3A 2x8 switches are quite good, have excellent isolation. The more expensive one has even better isolation and probably has a band decoder. The switching inputs can be configured multiple ways with DIP switches. I don't recall details, because my band decoders are built into my 5B4AGN BPF kits. And Ranko is very good to deal with.
> 
> 73, Jim K9YC
> 
>> On 8/31/2024 4:57 PM, RVZ via Elecraft wrote:
>>  My pair of K3S radios are in need of a 2x8 Antenna Switch for SO2R operation.  I'd like the SO2R Antenna Switch to have a built-in band decoder so the Band Data output from the  K3's ACC jack will do the switching.  I don't want an external Band Decoding unit for multiple reasons. So far, the only SO2R Antenna Switch I know of that has a built-in Band Decoder is the FLEX 2x8 Antenna Genius.  Please advise if there are any others? Thanks!
> 
> 
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