[hpsdr] Fwd: PowerSDR mRx CW transmit problem: part 1 of 2

[Joe Martin]

Part 1 of 2 (due to the size of my reply): 

Begin forwarded message:

> From: Joe Martin <k5so at k5so.com>
> Subject: Re: [hpsdr] PowerSDR mRx CW transmit problem
> Date: August 28, 2015 10:40:55 PM MDT
> To: List Mail <mail10 at barefoothorse.com.au>
> Cc: <hpsdr at lists.openhpsdr.org>
> 
> Hi Luke, 
> 
> I have examined the issues you report using my Atlas/Ozy system here configured as you indicated with the following results (imbedded in the text below): 
> 
> On Aug 15, 2015, at 4:04 PM, List Mail wrote:
> 
>> Now the symptoms I am experiencing are as follows:
>>  
>> 1. With the setup I normally use, a footswitch to manually switch the transmitter, iambic OFF, break-in OFF, it switches to transmit when I touch either paddle and sends dits, in apparently full break-in mode.
> My system does not behave as you describe.  Using the PTT of the mic jack on Penelope (to which I understand your footswitch is connected), iambic OFF, break-in OFF, the CW paddle sends DAHs and DITs correctly depending upon which side of my paddle is activated as expected.
> 
> HOWEVER, I agree with your observation that with break-in OFF no rf should be emitted unless MOX or the mic-PTT/footswitch is activated.  The current behavior is incorrect, yes.  That particular functionality is controlled within PowerSDR and Doug, Warren, and Phil are in fact aware of the issue as this particular issue also exists for other platforms too.  This issue will be addressed in due course I understand.  For the time being, I recommend that you use "break-in ON" with an appropriate delay set in the break-in delay control panel on the main PowerSDR display (when in CW mode).  That works well for me.  An appropriate time delay setting will keep the relay chattering you mention to a minimum, activating/deactivating the relays between your CW word transmissions if you wish or for your entire transmission if you prefer that instead, depending on the value you set for the delay time.  
> 
> When the “iambic” control is NOT checked (i.e., iambic OFF), my CW paddle produces DITS when the dit side is active and produces a steady carrier when the dah side is active continuing with the stead carrier as long as the dah side is held on the paddle.  This is normal behavior I think. I do not have an explanation as to why yours sends dits with either side active; mine doesn’t here.  Perhaps it is a wiring issue there, such as the two lines (dit and dah) being inadvertently connected somehow?  Just a guess.
> 
>>  
>> 2. When I depress the foot switch to change to transmit, the rig seems to go out of receive mode, but the T/R relay on the PA does not switch. This relay is controlled from the “PTT control” pin 13 on the DB-25 connector on Penelope. The footswitch is connected to the PTT line on the microphone connector on Penelope. “PTT control” only operates with break in function.
> 
> Yes, I concur with your observation.  In Penelope_v1.8 there does not appear to be a logic connection of the mic PTT on Penelope to the open collector output on Pin 13 of the DB-25 connector on Penelope.   To fix this I have prepared a modified version of firmware for you to test to verify that the fix works successfully for you on your system.  I have a link to a dropbox below that contains the new Penelope code with the fix.  On my system the modified firmware does key my external PA T/R relay when the mic PTT is activated, so this fix should make your footswitch function properly too I think.  

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