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Roger, Interesting. I use a FT-817 or 857 but haven't used them on 6 meters with the ATU-100. I will have to keep that in mind. I also have a LDG-Z11 Pro. I will have to see what mix is used in that

Hi Paul, Using a capacitance meter I think at least one of my Caps has gone.? I've got some high voltages ones, so will try them. Looking at commercial tuners, for the bottom 3 bits, they often use 2

Hi Mike, I tend to tune at 5W (the default value from Icom when you push the tune button).? I was testing with 10W of FM, but the inductors were overheating at 50MHz (which is why I'm looking at the

Good idea on themica capacitor replacement. What power were you tuning and operating at? I tune with max 20 watts and operate at 50 watts. I derate all of my tunersby 50%. Mike

is there a way to get a command signal from the atu when tuning to use the radios alc to tx on low power when tuning?,i am thinking for an old yaesu ft-707.

how about one half of a bias-T onboard as well,that would be handy.

i think changing the caps for decent rated silver mica as on 3 of my atu-100 various caps let magic smoke out.

is there a oled display bigger than 1.25"? that can be driven by the atu-100 pic,if so what model number do i look for?,thanks in advance.

Roger, as the serial is done with bit-banging, it's easy to send the inverted signal to an output pin. There's no need to use CLC block or any other microcontroller's peripheral. Proper differential

Hello Harald, glad its working. There are some TTL<->485 interface boards with automatic data direction control. But you're right, if one wants to use a simple EIA-485 receiver/driver like a

Thanks lot David! I'll do that: use o longer cable between the antenna and the tunner. I did not mention, but a counter pole, and also a big ground plane (that is a part of the building ) is

DC ground from center connector is via the SWR bridge transformer. RF path to ground is high impedance above 80 m up to high end. Em qui., 14 de mar. de 2024 03:19, Bill Maxwell via groups.io

Paul, that wti mn

Looks like it is Python versions 2 and 3 differences.

"pysmithplot-fork" does not work for me, I don't know why. I find "mpl_smithchart" and change `from smithplot import SmithAxes` to `from mpl_smithchart import SmithAxes` than all will be fine.

Hi Harald, If you just want differential signalling, I've used the CLC block to invert the TX pin so you get the TX and TX\ directly out of the PIC (probably needs a PIC with PPS, so something like

I was looking at some of my previous RS485 projects and there I had to use DE & RE pins on the transceiver module when transmitting. So this might require another pin when the ATU wants to transmit

Well Paul, we can't exclude other possible issues being present but if you look at the circuit schematic it clearly shows the bodies of the input and output? sockets being connected to the ground of

fider?,do you mean feeder by any chance?.

Hi bill,no it was a kit so was an oversight by me,i just wondered if that would cause the no responce to rf or if its a firmware fault etc.