Search found 1207 matches

by satnipper
07 Apr 2020 19:26
Forum: VHF Band 2, OIRT & DAB
Topic: 339km Aircraft Scatter 1kW station
Replies: 8
Views: 157

Re: 339km Aircraft Scatter 1kW station

Troposcatter is the default propagation mode for vhf/uhf signals which are received beyond the line of sight. It probably accounts for most QSOs on 2m/70cm in contests where there is no Sp E or tropospheric lift on.

Stuart
by satnipper
07 Apr 2020 12:40
Forum: Unidentified?
Topic: UNID Time Pips? 1768,600 kHz
Replies: 2
Views: 47

Re: UNID Time Pips? 1768,600 kHz

1767.0 usb is a marine band frequency
by satnipper
06 Apr 2020 20:06
Forum: Medium Wave & Long Wave
Topic: dx tip 3/4
Replies: 28
Views: 258

Re: dx tip 3/4

Simon - your 1250 actually has a Capital Radio ID at 21/22 seconds.

I've just got round to checking last Friday and it is amazing how strong the Colombians are.
by satnipper
05 Apr 2020 19:55
Forum: SDR Receivers
Topic: Afedri LAN-IQ standalone SDR
Replies: 2
Views: 47

Re: Afedri LAN-IQ standalone SDR

Looks interesting - but I think a mistake not to design it for power from a nominal 12v source.
by satnipper
31 Mar 2020 10:24
Forum: Unidentified?
Topic: 1570 L.A. ths morning
Replies: 13
Views: 145

Re: 1570 L.A. ths morning

From the signal strength and French language CJLV is the likely candidate.
by satnipper
30 Mar 2020 13:29
Forum: Unidentified?
Topic: 1570 L.A. ths morning
Replies: 13
Views: 145

Re: 1570 L.A. ths morning

Tying in with the French/Creole music I think the OM is saying "bonne affaire" in French.
by satnipper
26 Mar 2020 16:13
Forum: Antennas
Topic: MLA-30 Active loop antenna
Replies: 1
Views: 65

Re: MLA-30 Active loop antenna

Presume you have seen this Julian - comments have more info.

https://www.m0lmk.co.uk/2019/09/12/insi ... #more-2505
by satnipper
22 Mar 2020 19:18
Forum: News
Topic: OpenWebRx (Kiwi SDR on line receivers) now banned
Replies: 5
Views: 118

Re: OpenWebRx (Kiwi SDR on line receivers) now banned

Useful link to understand situation and details of alternative portals:

https://swling.com/blog/2020/01/popular ... ernatives/
by satnipper
22 Mar 2020 17:16
Forum: News
Topic: OpenWebRx (Kiwi SDR on line receivers) now banned
Replies: 5
Views: 118

Re: OpenWebRx (Kiwi SDR on line receivers) now banned

sdr.hu is just a portal - when you click on the rxer location you leave the site and go directly to the rxer site. Some kiwi owners do put time limits on usage with timeouts etc. The additional support for DRM has made things worse as DRM support means only 1 user can use the device at any one time ...
by satnipper
21 Mar 2020 23:32
Forum: News
Topic: OpenWebRx (Kiwi SDR on line receivers) now banned
Replies: 5
Views: 118

Re: OpenWebRx (Kiwi SDR on line receivers) now banned

There are others portals such as http://rx.linkfanel.net/

and you can always access the rxers directly.

Stuart
by satnipper
15 Mar 2020 14:35
Forum: Pirate Radio
Topic: Latest ShortWave Radio Recruit
Replies: 0
Views: 94

Latest ShortWave Radio Recruit

Jack Russell of Scotland’s venerable WMR was heard Friday evening on the legal German outlet Shortwave Radio who transmit on 6160/3975. Jack is just the latest of a number of well known 48m presenters to appear on this service.


https://www.shortwaveradio.de/
by satnipper
20 Feb 2020 11:59
Forum: Antennas
Topic: More Flag advice needed !
Replies: 26
Views: 1693

Re: More Flag advice needed !

I made this video few years ago to show the nulling ability of the Flag on ground wave.

https://youtu.be/1oHebQssLds

The null on skywave will be less pronounced, not least because you’ll have more variable level signals arriving from angles which can rapidly change.
by satnipper
20 Feb 2020 11:53
Forum: Antennas
Topic: More Flag advice needed !
Replies: 26
Views: 1693

Re: More Flag advice needed !

Changing from 2x4m to 3x6m should not cause IMD - the signal strength increase should be way too insufficient. Sounds like you have a loose connection somewhere; maybe on the coax earth connection.

What balun are you using?

Stuart
by satnipper
19 Feb 2020 21:59
Forum: Antennas
Topic: Good quality "made up" coax.
Replies: 6
Views: 142

Re: Good quality "made up" coax.

You’ve lost me
by satnipper
19 Feb 2020 21:25
Forum: Antennas
Topic: Good quality "made up" coax.
Replies: 6
Views: 142

Re: Good quality "made up" coax.

Any of the big 3 will do this and probably a couple of the chasing vendors
by satnipper
19 Feb 2020 21:22
Forum: Antennas
Topic: More Flag advice needed !
Replies: 26
Views: 1693

Re: More Flag advice needed !

You are not going to get perfect nulling with skywaves. That’s just the nature of the beast. It’s best to test nulling with the ground wave. However the nulling is frequency dependent. ON4UN has written the low band bible (use google) and the 8x4m design was reckoned to be optimal for top band.
by satnipper
16 Feb 2020 11:56
Forum: Antennas
Topic: More Flag advice needed !
Replies: 26
Views: 1693

Re: More Flag advice needed !

So would it be fair to say that the ratio of the vertical to horizontal lengths should be around 3 to 1 but that the physical distance between the two vertical elements doesn't have to be? You're getting a bit confused here as the ratio IS referring to the physical distance between the two vertical...
by satnipper
29 Nov 2019 13:30
Forum: Receivers
Topic: Airspy HF+ Discovery
Replies: 10
Views: 1009

Re: Airspy HF+ Discovery

Maybe tempted - along with the SDR Play Duo....

Should sell the Elad FM2

Stuart
by satnipper
21 Nov 2019 17:29
Forum: Receivers
Topic: Airspy HF+ Discovery
Replies: 10
Views: 1009

Re: Airspy HF+ Discovery

Removed already from site!
by satnipper
18 Nov 2019 17:02
Forum: Pirate Radio
Topic: Radio Caroline 87.7
Replies: 3
Views: 613

Re: Radio Caroline 87.7

No. It's Crewe way isn't it?

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