Great experience with PAR Electronics EF-SWL

Useful information regarding antennas for SDR products.
Corax
Posts: 2
Joined: Wed Jul 12, 2017 12:27 am

Re: Great experience with PAR Electronics EF-SWL

Postby Corax » Wed Jul 19, 2017 12:07 am

Hello Noel C and everyone who might want to help me,

I have the RSP2 and a PAR EF-SWL antenna as you, however all I get is noise and interference and the radio seems to be overpowered by other commercial AM signals. I must comment that this does not happen when I use the same antenna connected to a HACKRF which is not overpowered and doest not show the same interference and noise as the RSP2. I am posting 2 pictures for comparison with the HACKRF listening to a morse code transmission clearly and then I connected the same antenna to port A on the RSP2. You can see the difference in the waterfall and how on seems cleaner while the other is full of lines from interference and noise. also, I had to reduce the gain to the minimum to barely hear the morse code over the noise and interference.
I am very disappointed/worried that something might be wrong with my RSP2 that I just bought. I also did a lot of reading before going for that combo for SWL but it is not working at all as I expected. What could I be doing wrong?

I appreciate anyone´s input on this. Is it a problem with the RSP2? since we have the same setup, what could I be doing incorrectly/differently?

I tried the same with the uno software provided with the RSP2 and the results were the same. I only get overload. By the way, I have a TRAM 1411 discone antenna that seems to work for SWL and VHF/UHF on both ports.

I also have read that for a wire antenna like the PAR EF-SWL the recommended port is the Z port. I have not tried that port yet because the antenna feed is coaxial. I am waiting for a Balun from NOOELEC like the one recommended in the SDRPLAY RSP2 antenna document along with a SO-239 to SMA adapter to connect from the coaxial to the Balun. Will this be a better solution than connecting the PAR EF-SWL to the SMA ports directly?

Thanks to anyone who can provide help on this.
Attachments
Captura de pantalla 2017-07-18 a la(s) 18.12.04.jpg
Captura de pantalla 2017-07-18 a la(s) 18.12.04.jpg (162.23 KiB) Viewed 313 times
Captura de pantalla 2017-07-18 a la(s) 18.16.37.jpg
Captura de pantalla 2017-07-18 a la(s) 18.16.37.jpg (154.46 KiB) Viewed 313 times
Last edited by Corax on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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NoelC
Posts: 64
Joined: Sun Nov 27, 2016 11:50 pm

Re: Great experience with PAR Electronics EF-SWL

Postby NoelC » Fri Jul 21, 2017 4:24 am

I'm using SDRuno. Is there a possibility it knows how to coordinate the enabling/disabling of the internal bandpass filters better than the software you have?

-Noel

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Corax
Posts: 2
Joined: Wed Jul 12, 2017 12:27 am

Re: Great experience with PAR Electronics EF-SWL

Postby Corax » Fri Jul 21, 2017 4:44 pm

I have also tried with SDRuno. Same results.
Last edited by Corax on Thu Jan 01, 1970 12:00 am, edited 0 times in total.
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