[Elecraft] [K3] PSK etc via external unit and KB

Joe Subich, W4TV lists at microham-usa.com
Sat Apr 19 12:02:18 EDT 2008


Greg,

> I think K1EL has something similar to this called a K40?  It 
> even has the correct "K" designation.  :)  But...its output 
> is setup only for the straight key input and not paddle 
> input.  So some mods would be required.

K1EL's Keyboard to serial IC <http://k1el.tripod.com/ATKBD.html> 
comes close but the output is ASCII data at 1200 or 9600 bps and 
not "paddle closures."  It would take a second PIC to convert 
the ASCII to "paddle closures" at a fixed WPM rate appropriate 
for data modes. 

It would sure be nice if the factory programming port - which, with 
its PCD (data), PGC (clock) and +5V signals looks suspiciously like 
a nonstandard i2C (PS/2) port - could be repurposed as a keyboard 
input for at least RTTY/PSK31 and maybe control of the keyer 
memories.

73, 

   ... Joe, W4TV 
   




> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Greg
> Sent: Saturday, April 19, 2008 10:18 AM
> To: David Ferrington, M0XDF; "Crafters"
> Subject: RE: [Elecraft] [K3] PSK etc via external unit and KB
> 
> 
> I think K1EL has something similar to this called a K40?  It 
> even has the correct "K" designation.  :)  But...its output 
> is setup only for the straight key input and not paddle 
> input.  So some mods would be required.
> 
> One of the items on the list is to accept input from the KEY 
> jack as well as the paddles.  When done, no mods to the above 
> item would be necessary.
> 
> 73
> Greg
> AB7R
> "Snowed in in APRIL!!!"
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net]On Behalf Of David 
> Ferrington, M0XDF
> Sent: Saturday, April 19, 2008 3:39 AM
> To: "Crafters"
> Subject: [Elecraft] [K3] PSK etc via external unit and KB
> 
> 
> Having just read the Waters & Stanton add in this months 
> RadCom, I see on pg 2 an add for the Icom IC-7700 and its 
> content : "Another first: built-in PSK31 and RTTY. Just add a 
> USB keyboard"
> 
> Apart from taking exception - it's not a first, the K3 was I 
> believe (but no point complaining - K3 doesn't have a KB 
> yet), this got me to thinking...
> 
> Would some bright spark like to produce a very small USB 
> keyboard to paddle converter kit? I would guess a PIC that 
> would produce the appropriate contact closures? This is far 
> beyond me in design, but while we wait for Elecraft to 
> possibly add some form of keyboard interface, this would 
> allow us to drive the built in PSK and RTTY in the K3 via the 
> paddle input.
> 
> I know there is the NUE-PSK unit, but since most of the 
> requirement is in the K3, I thought a small unit to convert 
> key press to contact closure might be possible?
> 
> 73 de M0XDF, K3 #174
> 
> --
> God gives every bird his worm, but he does not throw it into 
> the nest. -Swedish proverb
> 
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