[Elecraft] Filter width and cutting off CW

[Don Wilhelm]

Dave,

Just as a guess (I don't have either the 500 or 400 Hz filters) - do you 
have the correct filter offset entered into the K3 menu?  It certainly 
sounds like a conflict between the roofing filter centers and the DSP 
filter centers.

You have said that the filter center frequency matches your sidetone 
pitch, so that rules out a mis-setting of the SHIFT control.

I cannot duplicate your problem here, but then I am relying only on the 
DSP filters - I have only the 2.7 kHz filter installed..

73,
Don W3FPR

David Ferrington, M0XDF wrote:
> Thanks for all the responses - to answer the questions:
>
> Yes I'm in CW mode
> yes I've used Spot and shift shows an * to indicate its centred over 
> the frequency
> I've checked the filters and offsets, receive Filter Enables etc in 
> Configuration etc.
>
> the loss of signal occurs at 500Hz, that’s before the filter switch 
> point at 400HZ
> I have checked against RWM on 9.996 band it cuts of in the same way at 
> 500Hz
>
> It appears that once I go down to 500HZ, the signal is greatly 
> attenuated and I loose the side tone, regardless of mode, the 
> frequency is attenuated at that point - I can just hear the 
> transmission, but everything is very attenuated. I'm wondering if they 
> made be a bad connection of a part of the board that only comes in 
> below 550Hz.
>
> When RWM is transmitting just a carrier, it gets cut off at 500Hz
>