[Elecraft] K3 Beta Firmware, Revision 2.31

[Stewart Baker]

Yes, very good.

We've had ESSB & Diversity implemented. 
VFO IND next ?

73
Stewart G3RXQ
On Thu, 28 Aug 2008 10:42:15 -0700, wayne burdick wrote:
> K3 beta-test firmware revision 2.31 is now available. This is an
> extensive update; details appear below. Please send any problem 
reports
> to k3support at elecraft.com.
>
> For instructions on how to load beta firmware, please see:
>
> http://www.elecraft.com/K3/k3_software.htm
>
> 73,
> Wayne
> N6KR
>
> * * *
>
> MCU 2.31 / DSP 1.89, 8-28-08
>
> New Features and Enhancements:
>
> * CW SIDETONE INCREMENTS NOW 10 HZ (originally 50 Hz).
>
> * RIT CLR switch now works during transmit in all modes and at 
any time.
>
> * RIT CLR MENU ENTRY: You can use this menu entry to select 
"UNDO ON" or
> "UNDO OFF". OFF is the default. When "ON", tapping CLR will 
alternate
> between
> 0.00 and the present RIT/XIT offset, if any.
>
> * DIVERSITY RECEIVE MODE: If you have the sub receiver (KRX3 
option)
> installed,
> you can take advantage of "diversity receive" by using two 
separate
> receiving antennas.
> This can improve signal copy during fading, and adds a spatial 
(L/R)
> effect to signals.
> DIVERSITY MODE further enhances this capability by slaving the 
sub
> receiver's
> mode, filter settings, and VFO to the main receiver. To enter 
diversity
> mode, hold
> SUB until you see "DIVRSTY" on VFO B (about 2 seconds). The kHz 
decimal
> point
> of the VFO A display will flash slowly as a reminder that 
diversity
> mode is in effect.
>
> Notes on Diversity Mode:
>
> 1. Entering diversity mode switches the sub receiver  to its AUX 
antenna
> source. If you don't hear any right-channel audio, you probably 
don't
> have
> an antenna connected to the sub's AUX input. Refer to the 
owner's manual
> or KRX3 manual for information on sub receiver AUX antenna
> configuration.
>
> 2. If your main and sub receiver have 5-pole crystal filters 
with
> differing frequency
> offsets, you may hear a slow phase modulation in the received 
audio at
> some
> VFO frequencies. The only way to eliminate this effect is to use 
5-pole
> filters with
> matched offsets (available on request; contact Elecraft) or use 
8-pole
> filters,
> which have no offset.
>
> Miscellaneous changes:
>
> * DUAL PB CW MIN CONTEXT BANDWIDTH NOW 400 Hz. In high-QRM 
situations,
> a 400 Hz or 500 Hz crystal filter may be very useful as a limit 
to the
> context bandwidth.
> Note that the "pedestal" effect (-24 dB context filter) becomes 
more of
> a sloped
> response as the context bandwidth is reduced.
>
> * DATA TX ALC IMPROVEMENTS. PWR control is now more responsive 
during
> transmit in all DATA modes.
>
> * FM SQUELCH THRESHOLD: Closely matched between main and sub 
receivers.
>
> * NOISE BLANKER ON/OFF ON BAND CHANGE: The DSP noise blanker
> wasn't set up properly during band changes. It may have been 
left ON on
> the new
> band in some cases.
>
> * PA TEMP and FP TEMP are now "normal" VFO B alternate display 
modes,
> meaning that you don't have to set TECH MD to ON in the config 
menu.
>
> * DDS frequency shifting during T/R changed to eliminate a 
variation in
> CW
> keying duty cycle that was occurring only over specific, narrow
> frequency ranges
> on each band. This also eliminated a related CW keying artifact.
>
> For software developers:
>
> * RG$ command implemented (sub receiver RF gain).
>
> * "FA", "UP" ,"DN", "RC", "RU", and "RD" COMMANDS UPDATE VFO B 
IF
> VFOS ARE LINKED (except in SPLIT). These commands can also be 
used
> in transmit mode.
>
>
> ---
>
> http://www.elecraft.com
>
>
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