Jay, I have used CW ID from the U3S extensively with never a problem. I understand your comments about the shaped waveform and have already suspected that as an issue. I am not sure what happens at t
Hello Eric, Yes, the output is a square wave when I use the U3S I take the output direct from CLK0 at 2X frequency (set in the U3S menu) via a co-ax to the input of the W1VD amp to Pin 3 of 74F74 wit
AH - HA !!!!!!!!!!!! Therein may lie your problem. If you take your input direct to the 74F74 clock and don't hit that with anything other than a square wave you are bound to have problems. TTL d
Hello Andy, Thanks for that! Bearing in mind i am not the sharpest knife in this drawer, would that perhaps explain why the U3S Si5351a output drives more reliably at 3.3V than say the output of a do
Just to clarify... did you say previously that the U3S also worked fine running at 1x and feeding a doubler, squarer, etc. also? Hello Eric, Yes, the output is a square wave when I use the U3S I take
Hello Eric, No, I have always run the U3S in X2 mode as far as I can remember. No doubler, no squarer, just straight out of CLK0 to Pin 3 of the 74F74. And no issues at all. Thanks. BTW, I really adm
I'll put it in the groups.io folder under my callsign LF_IFACE.gif Andy www.g4jnt.com On Tue, 26 Feb 2019 at 17:12, Chris Wilson <[email protected]> wrote: Hello Andy, Thanks for that! Bearing in m
Eric, I I have always run my U3S through the W1VD doubler. Never had any problems with blown FETs with that setup, even when I tested at 1 kW under Part 5 license. There is apparently something diffe
Anyone have a U3S schematic handy? Link to same? Jay W1VD Eric, I I have always run my U3S through the W1VD doubler. Never had any problems with blown FETs with that setup, even when I tested at 1 kW
So if used with no LPF (as it should be in this situation) the RF output may well have quite sharp edges. Just what's wanted. But for driving a divider, a direct connection to CLK0 is ideal and prefe
