Re: Rocky and IQ balance
One simple way to check SOFTROCK I and Q signals is to tune to a
steady carrier strength about S9 on the band and using Rocky.
Now just connect the I channel and note the response on Rocky in dBs.
Next step remove the I channel and connect the Q channel.. Response
on Rocky should be the same. This should allow you to trace quickly
that I and Q are present.
If the gain of one channel is different from the other channel, check
the value of the resistors which set the gain around the opamp.
Good luck & Happy 2007!!
--- In email@example.com, "Alex, VE3NEA" <alshovk@...> wrote:
> Hi John,
> If both I and Q signals are present and equal at the D44 input but
> equalizer window is grayed, this is most likely due to a short
> between I and Q, either on the RX board or in the cable. Are you
> same cable for both radios?
> 73&HNY, Alex VE3NEA
> I have built a Softrock V4 and gave it away; a V5 and using it and a
> beta RXTX6 ....
> In the case of the V5 and the RXTX with Rocky, there has NEVER been
> anything on the 'automatic IQ balance'... both 'sides' are equal -
> nothing every shows in the little window.
> Tony gave me a clue to get my RXTX receiving - Thanks! - but still
> have something wrong.
> Using a Delta 44 with Tony's board, and the 3/4 input. Output is the
> internal sound card.
> Suggestions welcome!
> Happy New Year
> 72 John VE3NFK