[Lowfer] 8 KHz bandwidth for 6 lowFER stations 11-24-20

[Douglas Williams]

I actually use a 100Hz IF bandwidth when listening on the lowfer watering
hole, because of a very strong nearby PLC.

On Wed, Nov 25, 2020 at 9:58 AM <jrusgrove at comcast.net> wrote:

> One problem when running a wider receiver bandwidth will be incorrect
> reported s/n ratios of digital
> signals.... which are normally calculated in an ssb bandwidth. Not that
> there are many digital
> signals in the lowfer band ... and most folks probably  aren't worried
> about a few dB discrepancy.
> Just sayin' ;-) .
>
> Jay W1VD
>
>
> ----- Original Message -----
> From: "Douglas Williams" <williamsdoug1966 at gmail.com>
> To: "Andy - KU4XR" <ku4xr at yahoo.com>; "Discussion of the Lowfer (US,
> European,& UK) and MedFer
> bands" <lowfer at mailman.qth.net>
> Sent: Wednesday, November 25, 2020 9:19 AM
> Subject: Re: [Lowfer] 8 KHz bandwidth for 6 lowFER stations 11-24-20
>
>
> > That's pretty cool, Andy. Guess that shows that the software doesn't
> > necessarily require narrow CW filters in order to work properly.
> >
> > On Tue, Nov 24, 2020 at 11:32 PM Andy - KU4XR via Lowfer <
> > lowfer at mailman.qth.net> wrote:
> >
> >> Hi all:
> >>
> >> Just for kicks, ( and pleasant surprises ), I set the IF bandwidth on my
> >> TS450S to 12 KHz; curious to
> >> see if it really would receive that wide, AND, could I see 6 lowFER
> >> stations in a 7.2 Khz Bandwidth.
> >> The SpecLab Filter Control Window showed visible audio response to 10.5
> >> KHz.
> >> I was pleasantly rewarded with results. The target beacons were; JH, WM,
> >> SIW, TAG, KE, and EAR.
> >> *** If there are other eastern lowFER's on the air, I'm not aware of
> them.
> >> ***
> >> The Viewer Softwares required higher Audio Sampling rates to see the
> >> Higher Audio Frequencies.
> >> Monday night ( 23rd ) the static was 5 dB over S-9 but I still saw bits
> >> and pieces of JH, WM, and EAR.
> >> Tuesday night ( 24th ) the static was very low, and propagation was OK,
> >> but not great. Results were much better.
> >> *** KE is Off Air for TX rebuild, and Propagation just wasn't good
> enough
> >> to pull out TAG. ***
> >> The radio dial is at 181.610 KHz - USB
> >> JH - 181.818 KHz is at 200 Hz using Argo
> >> WM and SIW - 185.300 KHz is at 3690 Hz using SpecLab
> >> SIW - 185.185 KHz is at 3575 Hz using WSPR-X ( WSPR15 ) BFO at 3455 Hz
> >> TAG - 185800 KHz is at 4190 Hz using WOLF10
> >> KE - 187.304 KHz is at 5690 Hz using Spectran
> >> EAR - 188.830 KHz is at 7220 Hz using Spectran
> >>
> >> Screen shots of JH, including a " hic-up " along the way:
> >> https://www.dropbox.com/s/qcvtxyueehvot5s/JH_11-24-20.bmp?dl=0
> >>
> >> Screen shot of SIW in WSPR15 ( can't do OP32 due to no option to change
> >> BFO Offset to higher frequencies )
> >> https://www.dropbox.com/s/2tj3wyysxtsj75j/SIW_WSPRX_11-24-20.bmp?dl=0
> >>
> >> Screen shots of WM in the Wateringhole:
> >> https://www.dropbox.com/s/tqij6dayahhcak8/WM_11-24-20.bmp?dl=0
> >>
> >> Scren shots of EAR on the high end of the spectrum:
> >> https://www.dropbox.com/s/9v6m36au0rkcq08/EAR_11-24-20.bmp?dl=0
> >>
> >> Have fun. stay safe, and best DX to all; 73:
> >> Andy, KU4XR Friendsville, TN. EM75xr
> >>
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