As raduino has taken over vfo , perhaps they stopped mounting those 2 parts .
Hi Vic
The video has helped a lot as I only needed the first minute to work out that the VFO is never going to oscillate as C93 and L4 are missing, per the picture below!? I put the scope on Q7 and unsurprisingly there is no signal.? They say they test all the boards before despatch, but this one can¡¯t have been tested.? Going to refer it back to HFS for either a replacement board or a refund.
Roger
Thanks Vic.? The wiring is correct, but I was intending to sort the bird's nest after checking the unit was working okay.? After the initial issue with the outdated instructions on how to connect the Raduino (as I didn¡¯t want to put 12v in the wrong place), I had fully expected the unit to work, based on the advertised text that said that they tested the units as working before they were despatched.? If I had known that it was a might or might not work I would not have purchased.
I don¡¯t have much time at the moment but I¡¯ll watch the video.
Roger
On 9 Sep 2019, at 9:11 am, Vic WA4THR via Groups.Io <
vhklein@...> wrote:
Ashar has a nice video on troubleshooting the BitX40 receiver that might prove useful. See it at:
I am wondering if there might be a bad solder connection on one of the toroids, as that has been reported before. You might take a close look.
Also, you may get better results shortening all the wiring. It is a bit hard to follow with the several bundles of loose wire.
=Vic=
