[Elecraft] K3 + Microkeyer II - RF into paddle input

[Joe Subich, W4TV]

> The fix is somewhere on the microHam USA web site 
> -- they sell an interface that goes between the key and the 
> MicroKeyer and fixes the issue,

microKEYER II already includes the "debouncer function" and 
separate left/right paddle inputs.  The only way RF is going 
to effect the paddles is if there are significant common mode 
RF issues in a particular installation.  

Common mode elimination methods have been discussed at length 
by K9YC and W1HIS among others. 

73, 

   ... Joe, W4TV 
 


> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of WA6L
> Sent: Thursday, December 18, 2008 6:14 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 + Microkeyer II - RF into paddle input
> 
> 
> 
> 
> Terry,
> 
> I don't know if this is the same problem, but there is a 
> well-documented issue with MicroKeyers (actually with the 
> Winkey chip).  It has to do with the properties of certain 
> metallic compounds used in the contacts on the keys.  The 
> Begali keys are the ones most apt to have the problem, but 
> there could be others.
> 
> You end up with extra 'dits' and occasionally other 
> anomalies.  The fix is somewhere on the microHam USA web site 
> -- they sell an interface that goes between the key and the 
> MicroKeyer and fixes the issue,
> 
> Good luck and 73,
> 
> John, WA6L
> 
> 
> 
> g4amt wrote:
> > 
> > Has anyone had a problem with RF getting into the paddle 
> input of the 
> > MKII ? Problem is reduced somewhat by careful adjustment of 
> the router 
> > `Winkey` page, but essentially series of Ds likey to turn 
> into Ms and 
> > Gs (!); fine with K3 on test so has to be RF based. MKII keys clean 
> > with no problems `internally` but misbehaves when keyed 
> with paddle. 
> > Tried all usual decoupling - separate power supplies etc etc ..
> > 
> > On a slightly separate but perhaps relevant note, I have no +12V 
> > output on
> > the rear phone jack on the K3  - this is bracketed (switched) in the
> > manual 
> > but I can find no reference to where to switch it !  ... it 
> means running 
> > the MKII from a 12v psu with the DB37-EL-K3 12v in phone 
> lead floating
> > free.
> > Thanks in advance for any help !
> > 
> > Terry
> > G4AMT
> > 
> > _______________________________________________
> > Elecraft mailing list
> > Post to: Elecraft at mailman.qth.net
> > You must be a subscriber to post to the list.
> > Subscriber Info (Addr. Change, sub, unsub etc.):
> >  http://mailman.qth.net/mailman/listinfo/elecraft    
> > 
> > Help: http://mailman.qth.net/subscribers.htm
> > Elecraft web page: http://www.elecraft.com
> > 
> > 
> 
> -- 
> View this message in context: 
> http://n2.nabble.com/K3-%2B-Microkeyer-II---RF-into-paddle-inp
ut-tp1665248p1675283.html
Sent from the Elecraft mailing list archive at Nabble.com.

_______________________________________________
Elecraft mailing list
Post to: Elecraft at mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft    

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com