The Bitx40 has a 4 crystal IF filter. ?Adequate for a 5W rig, though perhaps not for 200W. ?I assume your friend finds your USB signal to be much weaker than the desired LSB signal. ?The uBitx looks better in this regard, you might experiment with patching in that better filter. ?But that would not be trivial to do, definitely a learning experience. ??
On Tue, Apr 4, 2017 at 11:21 am, Simon Thompson wrote:
Subject: Re: [BITX20] Bitx 40 usb copy
Date: April 4, 2017 at 11:20:55 AM PDT
I wonder if the Bitx is overdriving the amplifier, and creating USB distortion, or if the Bits is somehow not adequately suppressing the USB signal that is going in to the amplifier. Have you tried to turn down the output of the BitX by running through the alignment procedure so that you are producing very little output, and thereby not overdriving the amplifier?
Sir,
Thanks for replay, is using bitx 40 kit with 200 watts linear some my friends said that my signal having usb copy. IE., When i transmitted the LSB copy is 59 report in USB He gives 56 report how to eleminate usb copy in bitx 40
Thanking you
?
