I have the VFO encoder noise on the low end of 10M. Yesterday, I applied the VFO tuning noise reduction mod and switched to SPI 2 in CONFIG:VCO MD. That seems to have reduced the tuning noise a little, but not as much as I'd expected (or hoped). The noise was a solid S3 before the mod, but now shows up as bobbling between S2 and S3, so call it a 1/2 S-unit improvement.
I've triple checked the component locations and they're definitely soldered to the correct vias as shown in the instructions (Rev C). The diodes are oriented in the proper direction as shown. I've checked the values of the resistors and forward/reverse direction on the diodes and all is as it should be. To others that have the noise and have applied the mod, is this in line with your results? 73 -- Joe KB8AP ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
