tonight I wired my 49er amp section to the QCX's volume control just before the audio amp section and Steve I now have the same experience as you, a lively receiver!!!
It would seem there is a fault around IC10 which should be simple enough to trace. Visually all looks OK.
Thanks for the feedback once again. Once I get a chance I'll probe around there!
On Fri, Oct 27, 2017 at 8:48 PM Eddie Leighton <edleighton@...> wrote:
Thanks Hans and Steve. Monday night back on the bench with my QCX. Thanks for the feedback.
73 de Eddie ZS6BNE?
On 27 Oct 2017 3:58 PM, "Steve via Groups.Io" <senglish222=[email protected]> wrote:
Eddie, my experience has been the opposite of yours - I find the audio quite loud on my 40m QCX. In fact, I tried using a pair of computer headphones with an inline volume control and had to reduce that control by 50% for comfortable listening. Now, after getting a proper adapter, I'm using my usual CW headphones, Astrocom high impedance military surplus phones, and it sounds even better.
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Based on my experience, it sounds like what is happening to you is not normal. I hope you can get it sorted out.