[Elecraft] K3 FD report in high RF (K3 vs Flex 6xxx)

[Joe Subich, W4TV]

The Flex design is completely exposed to strong in band signals.  That
is a well known problem with both their original QSD and current DDC
designs.  Simply put, they can't handle ADC overflow.  That will always
be a problem for SDRs with wide front ends in high RF environments.

The K3 and Orion transmitters have much less spurious (particularly
transmitted phase noise from the K3) than most other transceivers while
the Flex is one of the dirtiest according to ARRL Labs.

73,

    ... Joe, W4TV


On 2015-07-01 7:49 AM, N1EU wrote:
> joemoffatt wrote
>> The K3 and Orion absolutely crushed the Flex's.  The Flex's got destroyed
>> by in band interference from the CW guys, but we never heard them.
>
> I don't think you can necessarily make that conclusion without further
> testing.  If the K3/Orion transmitters had significantly more spurious tx
> products than the Flex transmitters, that could also explain why the Flex
> receivers seemed impaired compared to the K3/Orion.  I'm not suggesting that
> was the case, but you need more data to reach a conclusion.
>
> 73, Barry N1EU
>
>
>
>
> --
> View this message in context: http://elecraft.365791.n2.nabble.com/K3-FD-report-in-high-RF-K3-vs-Flex-6xxx-tp7604461p7604491.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to lists at subich.com
>