toggle quoted message. . .
Maybe no help, but here's a filter mod I've been playing with on the ubitx
On Friday, October 19, 2018, 6:49:31 PM PDT, Michael Trager <mtrager1@...> wrote:
The BITX40 I am building receives somewhat OK but the transmitters audio is terrible with distortion and/ narrow bandwidth.
I think I may have 1 or 2 bad 12.0 MHz crystals when I inject a signal thru the filter and look at the various nodes. I see
the strongest peak at around 11.997830 MHz.
The bandpass is only around 1,700 Hz at best (11.998800 to 11.997100)!
The crystals are from MEC and the letters / numbers on them are: 12.000 G
Does anyone know of a suitable replacement in the USA for them?? Any special characteristics?