Interesting coincidence is that i just finished hooking up my K3 to the 
Signalink USB and HRD. Like 11 minutes ago.
The cable i use has 3 plugs: line in, line out and PTT.
I didn't connect the PTT at all because i'm using that jack on the K3 for my 
foot switch.
So HRD keys the radio via CAT. Works fine.
__________________
Slava (Sal) B, W2RMS
[email protected]

On May 31, 2014, at 9:36 AM, Don Wilhelm <[email protected]> wrote:

> Buddy,
> 
> That sounds like the PTT in the SignaLink box has broken.
> HRD has an option to send PTT via a K3 command - try setting that on and see 
> if things work correctly.
> 
> 73,
> Don W3FPR
> 
> On 5/31/2014 9:32 AM, buddy s wrote:
>> haven't updated k3 firmware
>> haven't updated HRD software
>> haven't updated windows xp software
>> 
>> been using hrd with signalink and k3 for months, until 2 days ago.  i
>> rebooted pc, to no avail.
>> 
>> in CW mode PTT on sihnalink does not come on when transmit initiated, nor
>> does light on k3
>> 
>> in psk mode, PTT on signalink does not come on, but transmit light on k3
>> does, no power from radio
>> 
>> in rtty mode, same symptoms as psk
>> 
>> any ideas/suggestions would be appreciated
>> 
> 
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