2025-09-19, 22:51
(2025-09-19, 08:20)MDuperrier Wrote:(2025-09-18, 16:35)oppedahl Wrote: I see that for each of these four stations, you chose ferrite-rod antennas. I think that is smart. For the host with what might be limited experience, any other kind of H antenna has more ways it might go wrong.
Do you add shielding to the FRAs?
Do you mount the FRAs and preamp to a board, so reduce the risk the host will damage the fine wires from the FRAs?
Hello,
I started with loops but the ferrite are definitely easier to package and 'tune'. With a 15m cable, I only instruct the host to place it anywhere away from any obvious source of noise and watch with the "FFT html page" provided by Mike. Sometime on the ground below the bed, sometime on top of a wardrobe, etc... Not optimal for sure but again, my host are not engineer and I try not to bother them more than a few days
I have not shielded the ferrite rod, only using shielded cable between the detector and pre-amp. My antenna packaging was discussed at: Thread 3983. Since then I have read post that indicate 'L' is better than 'X', but too late (and it works).
Thanks and regards,
Marc
Thank you for your posting, and again, thank you for your work that helps the goals of the project by providing a chance to get some stations working in a part of the world that previously did not have much coverage.
I see that you labeled the "ANT" port on the processor box. That was smart. It reduced the risk that your host might inadvertently plug the wrong cable into the wrong port.
I admire your antenna packaging. It looks like you found some black plastic box that was very lucky in its size and shape, that you were able to repurpose as a way to secure the two ferrites and the preamp. You end up with a very nice looking box that is easy to ship and you do not need to worry about the host possibly damaging the thin wires from the ferrites. It looks like the box has two keyhole slots on the back for wall mounting. But I cannot guess where the plastic box came from. Can you share how you happened upon this box with its ideal size and shape?
Again thank you for this service to the community.
Carl
DE AA2KW
AA2KW - Station 3205