Hi, I think I have found the problem, I have not been able to get the Xtal oscillating it now looks to be a duff Xtal, I had ordered the single mode QRSS kit for 30m (which I have built and is working well) I also ordered a QRSS Xtal for 80m, as an experiment I put this across the 160m Xtal and got a lovely LO signal on 3.500Mhz.
73 de Colin DD5CF / G1ZOS
