[Elecraft] Emailing: k3fw4r47.zip

[Adrian]

Guy, well Elecraft said they acknowledge the issue and they will work on 
it in the next firmware. When that happens I will pick it up.
Of course with 4.51 you can get perfect copy in perfect conds, but try a 
very weak signal or a noisy background and you are doomed.
The cwt threshold point dropped from 8 to 2 with the new firmware 
leaving little to work with.
I consider myself pretty good at setting cwt and have trained a few k3 
owners in this area to the finer points using RF gain and filter width 
to get it near perfect, once the threshold is set.


On 29/07/2012 1:57, Guy Olinger K2AV wrote:
> Sooner or later running a K3 with back level firmware will be a 
> problem.  With so many devices coming out and the amount of work on 
> those, you will simply be left behind.  No company without the 
> economies of scale like Microsoft can maintain old code.
>
> Some people report getting perfect copy using 4.51.  Can they please 
> share the AGC settings, and decoder threshold, etc that they are 
> using.  Please include any NB, NR, bandwidth, RF gain, etc. settings 
> you are using.
>
> Knowing the perverse nature of CPU coding for hardware, it's entirely 
> possible that the 4.47 "good menu settings" depended on an AGC bug in 
> 4.47.  That would mean that it's impossible to restore the settings 
> from 4.47 in a future 4.52.
>
> I seem to remember a period of thrashing about when CW decode first 
> came out, until working popular settings emerged.
>
> 73, Guy.
>
> On Sat, Jul 28, 2012 at 9:00 PM, Adrian <vk4tux at bigpond.com 
> <mailto:vk4tux at bigpond.com>> wrote:
>
>     See inline for comments
>
>     -----Original Message-----
>     From: Toby Pennington [mailto:toby423 at embarqmail.com
>     <mailto:toby423 at embarqmail.com>]
>     Sent: Sunday, 29 July 2012 10:42 AM
>     To: Adrian
>     Subject: Re: Emailing: k3fw4r47.zip
>
>     I have successfully downloaded 4.47 after crashing the radio once
>     but came
>     back according to your input and 4.47 loaded in.
>
>     Disconnecting the P3 before K3 power up, after a mcu ld issue is
>     required
>     and I forgot to mention that. Plug P3 supply back after the K3
>     firmware has
>     been completed. Sounds like you were good, but I just remembered that.
>
>     Now,  I am wondering what settings you have in your rig which
>     gives you
>     really good decode.  I am working on that now.  I have the AGC
>     threshold set
>     to 8 with the SLP set to 7.
>
>     Set SLP to 0.  AGC at 8 is good.
>
>     I have theTEXT DEC set to threshold of 5 and 30 to 90 wpm.
>
>     Yes the 30-90wpm works the best even at slow speeds. I use a
>     narrow filter.
>     Set threshold for clean pulses on the cwt display after spotting
>     (centre)
>     the signal. Then use filter width and/or rf gain to fine tune. I
>     get perfect
>     results most of the time, and using this method on noisy lower
>     bands works
>     well.
>     Just check the cwt is pulsing with the cw, then you are close. The
>     fine tune
>     is reflected in the print.
>
>     I just noticed my P3 cursor will not move so have another issue
>      HI> Check
>     for tracking mode or disable re-enable svga etc.
>
>     Good Luck
>
>     Adrian ... vk4tux
>
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