[Elecraft] No serial connection to Mac with Keyspan K3

[David Ahrendts]

Roberto, I have just worked a similar problem through with my KX3 Line and my Mac. We have different connectors between the K3 and the KX3, but here are some things I learned with the KX3 that might help you:
1) Make sure the chipset driver is updated. In the KXUSB (KX3 A/D USB cable) world, I found I needed to update the Mac OS driver for the cable chipset on my Mac Mini.
2) If you have the Pan Adapter, in the KX3 world, there is a power up sequence. For me, I power up in this order: KX3, making sure the PA Mode is turned on enabling the KXPA100 (100 watts amp)(they talk to each other as if one unit), then and only then powering up the PX3. Took the darnedest long time to get that, but an elder on this list thought he remembered that and it worked. Do not think that is listed in any manual (probably is and I overlooked it).
3) Don Argo at MacLoggerDX is very responsive for connection issues. He informed that MacLoggerDX will not work properly with the KX3 Utility operating. You might try one or the other.
Just my two cents. 

David Ahrendts, KC0XT, LA

> On Jan 6, 2015, at 4:16 PM, robertok <hamky1rk at gmail.com> wrote:
> 
> I'm having issues with connecting my Mac with my K3.  I used to be able to do
> it without much fuss.  I decided my Keyspan went caput, so I bought another
> one.  
> 
> The green light on the Keyspan (19HS) is solid when plugged into the RS232
> port on the K3 when the K3 is on, but the K3 Utility shows no connection
> when I test connection ("K3 is not responding").  The Keyspan shows up in
> Port>Choose Serial Port Connection.  So, I know it is connecting and
> sending/receiving data from the Mac.
> 
> On the K3, in Config>RS232 I have it set to 38400b (but I tried slower ones,
> too).  
> 
> I tried re-booting the Mac and powering the K3 on and off, etc., in all
> possible permutations.
> 
> I think my MU version is 4.67 (I've been idle for a while).  The K3 Utility
> is version 1.14.10.24.  I also tried connecting using MacLoggerDX with no
> luck.
> 
> Mac OS 10.10.1
> 
> Any help will be most appreciated!
> 
> RobertoK
> KY1RK
> 
> 
> 
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David Ahrendts   davidahrendts at me.com