Latest MCU and DSP

[Elecraft mailing list]

I've not been active in some time with my KX-3.  Last firmware update was MCU 1.61 and DSP 1.23.
 
What are the latest (non-Beta) releases available?  Also, does anyone have recommendations on a good desk mic for the KX-3?   And any recommendations for an interface to allow keying of an SB-200 amplifier?

I've tried to keep up with all of the comments over the past 1.5 years, but things change as the KX-3 has evolved and individual experiences may differ today from those in the past.

Thanks in advance for any info.

73   Chuck    W4MIL
 


 
チャーリー ミルトン
 


 
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[Raymond Sills]

Hi Chuck:

You should download the latest version of the KX3 utility (for your  
computer's OS)... and then when you connect the rig's USB or RS-232  
cable and launch the utility, you can then retrieve the latest  
production release of firmware for the KX3.   However, if you have not  
yet done so, you should make a copy of your -particular- rig's  
settings.  Elecraft recommends doing that the very first time you  
launch the utility.  I presume you have already done that with your KX3.

Don't forget that there a several new features that must be enabled  
via the rig's menu, and that you need to power cycle the rig after  
updates, to have the new firmware take effect.

I'm a QRP guy, so I don't have any hints regarding using an external  
amp.  :)   I'm sure others will respond.

73 de Ray
K2ULR
KX3 #211


On Mar 7, 2015, at 12:24 PM, W4MIL via Elecraft wrote:

>
> I've not been active in some time with my KX-3.  Last firmware  
> update was MCU 1.61 and DSP 1.23.
>
> What are the latest (non-Beta) releases available?  Also, does  
> anyone have recommendations on a good desk mic for the KX-3?   And  
> any recommendations for an interface to allow keying of an SB-200  
> amplifier?
>
> I've tried to keep up with all of the comments over the past 1.5  
> years, but things change as the KX-3 has evolved and individual  
> experiences may differ today from those in the past.
>
> Thanks in advance for any info.
>
> 73   Chuck    W4MIL
>
>
>
>
> チャーリー ミルトン
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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[Guy Olinger K2AV]

If you are seriously considering an SB200 that needs a keying circuit, the
standard upgrade for any of the SB200/201/220/221 is the Harbach "Softkey"
keying mod, which changes it from your keying +200 volts (compatible with
nothing modern) to a tame low negative voltage low current key voltage that
works with anything modern.
http://www.cis.rit.edu/people/faculty/montag/vandplite/pages/chap_9/ch9p1.html
.

There are many SB2xx amps, made modern with a full set of Harbach mods,
still in use and likely to be around as long as we have ham bands.

There are little circuits that can be put in tiny boxes, which you can find
with Google, but the permanent answer is to bring it up to spec with the
Harbach mods.

73 and good luck, Guy K2AV

On Saturday, March 7, 2015, W4MIL via Elecraft <[hidden email]>
wrote:

>
> I've not been active in some time with my KX-3.  Last firmware update was
> MCU 1.61 and DSP 1.23.
>
> What are the latest (non-Beta) releases available?  Also, does anyone have
> recommendations on a good desk mic for the KX-3?   And any recommendations
> for an interface to allow keying of an SB-200 amplifier?
>
> I've tried to keep up with all of the comments over the past 1.5 years,
> but things change as the KX-3 has evolved and individual experiences may
> differ today from those in the past.
>
> Thanks in advance for any info.
>
> 73   Chuck    W4MIL
>
>
>
>
> チャーリー ミルトン
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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[riese-k3djc]

consider
 the Power supply as well,,,, old electrolytic caps
will fail,,,, when I got mine from someone that didnt use it
 for some time the power supply came up but the B+ was jumping
a bit I turned it off fast
may as well do the fan too
the old Heaths are good amps and not so damned heavy

Bob K3DJC

On Sat, 7 Mar 2015 15:48:02 -0500 Guy Olinger K2AV <[hidden email]>
writes:

> If you are seriously considering an SB200 that needs a keying
> circuit, the
> standard upgrade for any of the SB200/201/220/221 is the Harbach
> "Softkey"
> keying mod, which changes it from your keying +200 volts (compatible
> with
> nothing modern) to a tame low negative voltage low current key
> voltage that
> works with anything modern.
>

http://www.cis.rit.edu/people/faculty/montag/vandplite/pages/chap_9/ch9p1
.html
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