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TOPIC: HF Antennas

HF Antennas 27 Jun 2021 21:48 #1

  • Pierre
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What is the purpose of A2 and A3 connectors for HF antennas? The manual, page 13 is not very clear. Can for exemple A2 used tor TX and A3 for RX with two different antennas?
73 - Pierre - FK8IH
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HF Antennas 28 Jun 2021 07:05 #2

  • VK6NX
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Yes, Pierre, A2 and A3 are giving the opportunity to use different antennas for RX and TX.
You can either use (for example) A2 for TX and A3 for RX (or vice versa).
Also you can make keyboard shortcuts, or use E-coder buttons, or use ESDR frontend directly to switch RX between you TX and RX antenna.
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HF Antennas 12 Nov 2021 11:54 #3

  • danielwee
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Just to pursue this clarification further, is it possible to have A2 used for the first receiver and A3 used for the second receiver? In EESDR2 1.3.1 Update 11, I found that when I chance the antenna for the first receiver, the antenna for the second receiver also changes. Occasionally, I seem to be able to have the top and bottom receiver set to different antennas (eg. A2 top and A3 bottom) but I'm not sure that the actual receiver is being used. In the screen capture below, you can see that I somehow managed to get the top and bottom receivers to be set to separate antennas but the performance does not reflect the difference of the antennas.

photo_2021-11-12_19-17-17.jpg


Most of the time, I am not able to make this happen. Whatever I set the top or the bottom receiver to use, the other receiver will also automatically use. I'm not sure what I'm doing wrong here.
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HF Antennas 12 Nov 2021 12:06 #4

  • DK8JV
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I'm afraid that technically, it is not possible to use two different antennas for the two receivers at the same time.
The SunSDR does have only one ADC that can be fed with only one antenna signal at a time.

Best regards,
Eberhard, DK8JV
Last Edit: 12 Nov 2021 12:07 by DK8JV. Reason: typo
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HF Antennas 12 Nov 2021 12:34 #5

  • danielwee
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Thanks Eberhard. That does make sense. What threw me off was that I could somehow (occasionally) get the two receivers to be set to separate antennas. Thanks for the direct answer - I was pulling my hair out trying to make it happen, lol.
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