Ok I have got the 40/80 M working and USB and LSB at least on 40m USB 3khz low approx. ?When I try to get to anything above 40m my receive gets lower and lower Probably LPF other than the Bandpass 40M Filter I put a switch on and open BPF and still Low RX, and low TX as well. ?Is there a LPF that I am missing somewhere or what mods can I do to get to as high as 20M. ?Is there any sketches written? Software or Hardware any help links would be great.
Remove C91, C92 from the Bitx40 if you have not already, they bleed away too much of the VFO energy when the VFO is much over the stock frequency of 5mz. ?Those caps are only required if using the analog VFO.
On Sat, Apr 1, 2017 at 09:18 am, Steve Greer wrote:
Ok I have got the 40/80 M working and USB and LSB at least on 40m USB 3khz low approx. ?When I try to get to anything above 40m my receive gets lower and lower Probably LPF other than the Bandpass 40M Filter I put a switch on and open BPF and still Low RX, and low TX as well. ?Is there a LPF that I am missing somewhere or what mods can I do to get to as high as 20M. ?Is there any sketches written? Software or Hardware any help links would be great.
On Sat, Apr 1, 2017 at 12:33 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:
Remove C91, C92 from the Bitx40 if you have not already, they bleed away too much of the VFO energy when the VFO is much over the stock frequency of 5mz.? Those caps are only required if using the analog VFO.
On Sat, Apr 1, 2017 at 09:18 am, Steve Greer wrote:
Ok I have got the 40/80 M working and USB and LSB at least on 40m USB 3khz low approx.? When I try to get to anything above 40m my receive gets lower and lower Probably LPF other than the Bandpass 40M Filter I put a switch on and open BPF and still Low RX, and low TX as well.? Is there a LPF that I am missing somewhere or what mods can I do to get to as high as 20M.? Is there any sketches written? Software or Hardware any help links would be great.
Allard PE1NWL