[Elecraft] [KX3] DATA A v SSB maximum receiver bandwidth not as wide.

[Ian White]

This links into another problem about data bandwidths: unlike the
specific DATA sub-mode, the associated passband settings are not saved
per-band. 

Whenever you select DATA, the stored SHIFT and WIDTH settings will
always be the last settings that were used for *any* data sub-mode on
*any* other band... which may often be quite inappropriate.

This is a particular inconvenience for all users who switch frequently
between narrowband data modes on HF and wider-band modes on 6m and
above. 

(It obviously isn't a major problem; I only mention it in case Elecraft
might be revisiting this area of code.) 


73 from Ian GM3SEK


>-----Original Message-----
>From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
>David Anderson
>Sent: 29 July 2015 22:28
>To: Elecraft Reflector
>Subject: [Elecraft] [KX3] DATA A v SSB maximum receiver bandwidth not
as
>wide.
>
>Experimenting with the KX3 on WSJT FSK441 and JT65b I noticed looking
at
>the spectral display of band noise that with the bandwidth widened
fully
>out on DATA A Mode that even though it was displaying 4 KHz on the KX3
>LCD, the bandwidth of the audio was less, like 400 Hz to 3600 Hz.
>
>On SSB mode it was possible to get the full 4 KHz by suitable
manipulation
>of the width and centre frequency.
>
>It is useful on JT65 on EME if you are running a pileup from a rare
DXCC to
>have stations spread out and having the full 4 KHz is beneficial then.
Under
>normal circumstances not at all important, but I was just curious why
DATA
>A mode is not giving the full 4 KHz while the SSB mode is.
>
>If I am missing some setting that is causing this please enlighten me.
>
>(I prefer using DATA A to the SSB Mode on WSJT as it does things like
turn
>off TX equalisation and compression and other things like NR on RX
which
>might upset WSJT).
>
>73
>
>David Anderson GM4JJJ
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