[Elecraft] FW: K4 and Predistortion

[Roger]

-----Original Message-----
From: Roger [mailto:roger at mulzer.de] 
Sent: Saturday, May 18, 2019 8:56 PM
To: 'ab2tc'
Subject: RE: [Elecraft] K4 and Predistortion

Hi Knut,

thanks for the info. I will check it out. Predistortion sure would place the K4 ahead of the majority of the manufacturers (at least the big ones). The tools and the possibilities are available for many years and have been for much longer in the professional sector. However I understand that most of the people don´t care about predistortion - maybe because they don´t really understand the benefit. It probably is a longer process like back in the 70s when car owners were afraid that emission cleaning causes engine problems and low power output. Actually it is funny that we are talking about unwanted emissions and power output here and there................................................(don´t pull my leg - although being German I DON´T appreciate the VW emission case at all!)

73 Roger, DL5RBW

-----Original Message-----
From: elecraft-bounces at mailman.qth.net [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of ab2tc
Sent: Saturday, May 18, 2019 7:36 PM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] K4 and Predistortion

Hi Roger,

You wrote "With the radios receiverwise reaching the physical limits it now is time to pull up the transmitter side to the state of the art as well. 
Regarding transmit IMD  we are still in the 70s or 80s and sometimes even worse than that therefore no progress has been made the last 40 to 50 years!"

I couldn't agree with you more ! BTW, there is now a new K4 group on groups.io, which is promising since the K3 group is now inundated with K4 stuff.

AB2TC - Knut



Roger-3 wrote
> As there is a lot of buzz going around with the announced K4 and I 
> have seen
> 1 or 2 messages on this reflector that referred to "Predistortion" I 
> wonder if there is any further detail on that. I probably fall out of 
> the regular scheme as I couldnt care less about the ability for remote 
> control and another 10 USB ports rather than predistortion. FLEX is 
> using the customer request for more remote control possibilities and 
> more USB ports to hold their 5 or 6 years ago announced predistortion 
> on standby - at least that is what they say. With the radios 
> receiverwise reaching the physical limits it now is time to pull up 
> the transmitter side to the state of the art as well.
> Regarding transmit IMD  we are still in the 70s or 80s and sometimes 
> even worse than that therefore no progress has been made the last 40 
> to 50 years!
> 
> So is there any deadline (vague or not) when predistortion will be 
> implemented?
> 
> 73s Roger, DL5RBW
> 
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