A hat for the radioberry

pa3gsb

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Apr 16, 2024, 9:12:48 AMApr 16

to Radioberry

Hi All,

Radioberry HAT hardware.

More details:

https://github.com/pa3gsb/Radioberry-2.x/tree/master/hardware/hat/release/beta0.1

So finally found time to assemble and to do some testing.

In the pictures the radioberry juice board together with the 2 layer RB and the radioberry HAT.

2 pictures IMD3 values of the HAT with and without pure signal.

Iam using the HAT together with my QRO PA with feedback for puresignal. Getting IMD3 of 65dbc.

Have fun.

73 Johan

PA3GSB

IMG_0606.jpg

hat psa off.JPG

IMG_0604.jpg

IMG_0601.jpg

hat psa on.JPG

Peter

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May 6, 2024, 1:19:06 PMMay 6

to Radioberry

Good job Johan , so juice can work with CL016 now?

pa3gsb

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May 7, 2024, 3:03:02 AMMay 7

to Radioberry

yes.

Op maandag 6 mei 2024 om 19:19:06 UTC+2 schreef Peter:

pa3gsb

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May 7, 2024, 3:04:31 AMMay 7

to Radioberry

be aware the pcb as on the github needs an update.... see forum for the issue.

Op dinsdag 7 mei 2024 om 09:03:02 UTC+2 schreef pa3gsb:

Jean-Claude Abauzit

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May 26, 2024, 9:49:36 AMMay 26

to Radioberry

Modification proposal (if does not create side effects).

There is only one RX path to the outside word: the PA/Antenna connector. This is fine when using an external PA which has RX/TX switching on its input.

A homebrew/kit PA may not have this input switch. An example is the 5W Pre-Amp which is also a bad example as it does not need this hat.

By cutting the RX trace going from the "Sampler" relay K301 and the "PA/Ant" relay K303 it would be possible to connect the RX path to either the PA/Antenna connector or the new RX connector by by using a 0 ohm jumper.

This will degrade the isolation between RX and TX an may be is not such a good idea.

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