25.08.2019 Airspy Discovery Band 2 Bandscan

[MikeF]

A quick bandscan using my new Airspy Discovery. This was made just as tropospheric conditions to Spain were starting to drop off. For the purposes of this video I didn't adjust the bandwidth or use SDR#'s aysmmetric filters, which make a huge difference.
The Discovery is really excellent for finding weak signals on adjacent channels to local transmitters. Beaming 200°.

https://youtu.be/1-WXFZHqENw

Mike Fallon
Saltdean
East Sussex
UK
N50°48' W0°1'
IO90XT

Receivers: * Sony XDR-F1HD (PC controlled via Seeeduino board & XDR-GTK software v.1.0) * Elad FDM-S2 SDR * Airspy HF+ Discovery * Airspy R2 SDR * Airspy Mini * SDR Play RSP1A *
Antenna: P.Körner designed 19.4 Yagi (with improved gain & F/B ratio) horizontal at 11m agl / 92m asl (http://www.ukdx.org.uk/fm/Korner%2019.4 ... 4_yagi.htm ) on a Tennamast 7.6m telescopic / tiltover mast
( http://www.ukdx.org.uk/fm/Tennamast.htm ) * GP cut for ~30MHz * TGN ULNA 3018 Mk.IV Band 2 masthead preamp * CCW Multicoupler feeding all tuners/SDRs 8 * Yaesu G1000DXC rotator *
Software: SDR# v1709 * SDR Console v3 * Elad FDM-SW2 v3.019 * RDS Spy v1.03 *

[FMDABDX]

A quick bandscan using my new Airspy Discovery. This was made just as tropospheric conditions to Spain were starting to drop off. For the purposes of this video I didn't adjust the bandwidth or use SDR#'s aysmmetric filters, which make a huge difference.
The Discovery is really excellent for finding weak signals on adjacent channels to local transmitters. Beaming 200°.
https://youtu.be/1-WXFZHqENw
Mike Fallon
Saltdean
East Sussex
UK
N50°48' W0°1'
IO90XT
Receivers: * Sony XDR-F1HD (PC controlled via Seeeduino board & XDR-GTK software v.1.0) * Elad FDM-S2 SDR * Airspy HF+ Discovery * Airspy R2 SDR * Airspy Mini * SDR Play RSP1A *
Antenna: P.Körner designed 19.4 Yagi (with improved gain & F/B ratio) horizontal at 11m agl / 92m asl (http://www.ukdx.org.uk/fm/Korner%2019.4 ... 4_yagi.htm ) on a Tennamast 7.6m telescopic / tiltover mast
( http://www.ukdx.org.uk/fm/Tennamast.htm ) * GP cut for ~30MHz * TGN ULNA 3018 Mk.IV Band 2 masthead preamp * CCW Multicoupler feeding all tuners/SDRs 8 * Yaesu G1000DXC rotator *
Software: SDR# v1709 * SDR Console v3 * Elad FDM-SW2 v3.019 * RDS Spy v1.03 *

Hi Mike
I cannot see any diffrence with other sdr receivers in your video.
Why is this so excellent?
Ruud

[MikeF]

A quick bandscan using my new Airspy Discovery. This was made just as tropospheric conditions to Spain were starting to drop off. For the purposes of this video I didn't adjust the bandwidth or use SDR#'s aysmmetric filters, which make a huge difference.
The Discovery is really excellent for finding weak signals on adjacent channels to local transmitters. Beaming 200°.
https://youtu.be/1-WXFZHqENw
Mike Fallon
Saltdean
East Sussex
UK
N50°48' W0°1'
IO90XT
Receivers: * Sony XDR-F1HD (PC controlled via Seeeduino board & XDR-GTK software v.1.0) * Elad FDM-S2 SDR * Airspy HF+ Discovery * Airspy R2 SDR * Airspy Mini * SDR Play RSP1A *
Antenna: P.Körner designed 19.4 Yagi (with improved gain & F/B ratio) horizontal at 11m agl / 92m asl (http://www.ukdx.org.uk/fm/Korner%2019.4 ... 4_yagi.htm ) on a Tennamast 7.6m telescopic / tiltover mast
( http://www.ukdx.org.uk/fm/Tennamast.htm ) * GP cut for ~30MHz * TGN ULNA 3018 Mk.IV Band 2 masthead preamp * CCW Multicoupler feeding all tuners/SDRs 8 * Yaesu G1000DXC rotator *
Software: SDR# v1709 * SDR Console v3 * Elad FDM-SW2 v3.019 * RDS Spy v1.03 *

Hi Mike
I cannot see any diffrence with other sdr receivers in your video.
Why is this so excellent?
Ruud

Hi Ruud, as I said it's when a combination of reducing the BW and asymmetric filters the sensitivity and selectivity of the Discovery outperforms my other SDRs. When I have the time I'll make a video showing this. One of the main reasons for today's video was to highlight what a packed band I have here when conditions are up.
Regards,
Mike

[MikeF]

A quick bandscan using my new Airspy Discovery. This was made just as tropospheric conditions to Spain were starting to drop off. For the purposes of this video I didn't adjust the bandwidth or use SDR#'s aysmmetric filters, which make a huge difference.
The Discovery is really excellent for finding weak signals on adjacent channels to local transmitters. Beaming 200°.
https://youtu.be/1-WXFZHqENw
Mike Fallon
Saltdean
East Sussex
UK
N50°48' W0°1'
IO90XT
Receivers: * Sony XDR-F1HD (PC controlled via Seeeduino board & XDR-GTK software v.1.0) * Elad FDM-S2 SDR * Airspy HF+ Discovery * Airspy R2 SDR * Airspy Mini * SDR Play RSP1A *
Antenna: P.Körner designed 19.4 Yagi (with improved gain & F/B ratio) horizontal at 11m agl / 92m asl (http://www.ukdx.org.uk/fm/Korner%2019.4 ... 4_yagi.htm ) on a Tennamast 7.6m telescopic / tiltover mast
( http://www.ukdx.org.uk/fm/Tennamast.htm ) * GP cut for ~30MHz * TGN ULNA 3018 Mk.IV Band 2 masthead preamp * CCW Multicoupler feeding all tuners/SDRs 8 * Yaesu G1000DXC rotator *
Software: SDR# v1709 * SDR Console v3 * Elad FDM-SW2 v3.019 * RDS Spy v1.03 *

Hi Mike
I cannot see any diffrence with other sdr receivers in your video.
Why is this so excellent?
Ruud

Hi Ruud, as I said it's when a combination of reducing the BW and asymmetric filters the sensitivity and selectivity of the Discovery outperforms my other SDRs. When I have the time I'll make a video showing this. One of the main reasons for today's video was to highlight what a packed band I have here when conditions are up.
Regards,
Mike

I forgot to mention. The Discovery is the only SDR I have which doesn't overload badly when beaming 95-120°, the direction of a local Band 2/TV mast approximately 5.5 km away. I am using my masthead amp with no inline attenuation and I get zero images/spurii.
Mike

[PAM]

You live in the future?

[MikeF]

You live in the future?

?

[MikeF]

You live in the future?

Oops see what you mean now LOL. Corrected date

[PAM]

Much better! Welcome back today.

[pg09]

Great demonstration, Mike! I have the "original" Airspy HF+ and it's already a superb performer on FM. I wonder how big the difference is between these two.

[FMDABDX]

Mike,
You wrote about a packed band now i understand.
A packed band is what I have normal without propagation, with dx it is a mess here!