Universal BiasBoard

Geplaatst op 17 oktober 2011 door PD1D


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New design stackmatch!

Geplaatst op 11 oktober 2011 door PD1D

Hello everyone!

Today I made in my spare time a new -3dB power divider for the shortwaveband.
I am very surprised about the results from this -3dB power divider, the return loss is from
160m till 10m almost everywhere about -22dB!!! And NO phase shifts between the outputs! :-)

On the picture you can see on the left side the old divider (not broadband)
and on the right side the new divider!

On this link you can see some detailed information about this divider!

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10×1 / SO2R antenna Switch

Geplaatst op 6 oktober 2011 door PD1D

Today i did some work to my new SO2R antenna controller, the design is by PA3AOT and assembled by myself.
You can also take a look at www.pa3aot.nl for detailed information about the controller!

The next step is to solder the switches and the relays on the pcb!

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