Ideal MWDX Equipment?

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PascalD
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Joined: 29 Dec 2016 12:32
Location: l'hay les roses, Ile de France & Auray, Bretagne

Ideal MWDX Equipment?

Post by PascalD » 11 Nov 2018 19:55

Hello,

I have put back for use after long time locked away both a Kenwood TS-850SAT + AL1530 actif loop aerial and would like for knowing if such equipment really is ideal for MWDX? I do not have the space in my Ile de France location for a flag or ewe antenne so rely with the 1530 actif loop for transatlantic reception but the band here most evenings is just saturated with Spanish and UK along with a couple of benelux stations.

Pascal
Kenwood TS850s
Kenwood R-1000
Sony XDR 1FD
Uniden UCB 3500XLT
R820T2 SDR + software v1.0.0.1666 + plugins manager suite
Welbrook AL1530 actif loop antenna
Selmar 2-PA 320 mini VHF/UHF actif antenna
5 element FM

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John Faulkner, Skegness
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Re: Ideal MWDX Equipment?

Post by John Faulkner, Skegness » 11 Nov 2018 20:03

Hello Pascal.

The band is saturated with Spanish and UK stations here too. ;)

Your setup sounds good. The ALA1530 is an excellent loop antenna with lots of gain.

The only problem you will have with any loop antenna is bi-directional reception. So if you are receiving Canada and the USA, for example, you will also be receiving equal strength signals from European and Middle Eastern stations. This is where the uni-directional flag antenna is superior, but you should still be able to receive plenty of transatlantic DX on medium wave with a loop and certainly with a receiver of the calibre of the TS-850SAT.

Start by looking on 1520 for WWKB Buffalo NY. 1400 may have a combination of Harbour Light from the Carriacou in the Windward Islands, plus CBG in Gander NL. 1390 has the religious broadcaster WEGP in Presque Isle ME. These are for starters. but you may hear many more stations, and I hope you will!

Give it a try and please report back with any reception. :)

Good DX!

PascalD
Posts: 103
Joined: 29 Dec 2016 12:32
Location: l'hay les roses, Ile de France & Auray, Bretagne

Re: Ideal MWDX Equipment?

Post by PascalD » 12 Nov 2018 23:15

Hello John, thank you for the frequency info to try which i will. I have recovered an old door stop and modified it to a base for supporting and turning the ALA1530 and was wondering if interference will increase by sitting the base and loop on top of the TS850sat? All MWDX will be done located near a 180° window radius offering a S/SW/NW direction

Good DX fellow dxer

Pascal
Kenwood TS850s
Kenwood R-1000
Sony XDR 1FD
Uniden UCB 3500XLT
R820T2 SDR + software v1.0.0.1666 + plugins manager suite
Welbrook AL1530 actif loop antenna
Selmar 2-PA 320 mini VHF/UHF actif antenna
5 element FM

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John Faulkner, Skegness
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Re: Ideal MWDX Equipment?

Post by John Faulkner, Skegness » 13 Nov 2018 00:05

It's possible that the loop will receive some interference from the TS-850 if close enough. Maybe from the display. You will have to try it.

Loop antennas are good at rejecting noise, so I hope you will find a good noise-free location, be it inside the house or outside. Outside would be better. I know the ALA1530 will not benefit from height, but just keep it in the clear, well away from other antennas, buildings, etc. When I had the ALA1530 I would mount it at the end of the garden on the washing line post. Eventually it went on the roof, just so it was out of the way.

Good DX Pascal.

satnipper
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Re: Ideal MWDX Equipment?

Post by satnipper » 13 Nov 2018 16:36

Unfortunately this setup will not be good for MF DX. Amateur rigs attenuate the MF band in order to eliminate break-through on top band from powerful local MF transmitters. Here are your rig's AM sensitivity figures:

AM (10 dB S+N/N)
0.1-0.5 MHz: 2 uV
0.5-1.62 MHz: 32 uV
1.62-24.5 MHz: 0.2 uV
24.5-30 MHz: 1.3 uV

Your amplified indoor Wellbrook will also be very noisy.

You will have a better chance of success by using a non-amateur rig (see Arctic DX reviews) and using a 2m x 1m flag with small kafa2500 balun and resistors.

Bien a toi
Stuart
A+

PascalD
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Joined: 29 Dec 2016 12:32
Location: l'hay les roses, Ile de France & Auray, Bretagne

Re: Ideal MWDX Equipment?

Post by PascalD » 17 Nov 2018 18:58

Bonsoir Stuart and thank you for your input but is it possible tell more for the kafa2500 balun, thankyou? I search google but do not find the balun in question but other only other types for a 2m x 1m flag would i am sure be with in my capabilitie for putting together.

Good DX fellow dxer

Pascal
Kenwood TS850s
Kenwood R-1000
Sony XDR 1FD
Uniden UCB 3500XLT
R820T2 SDR + software v1.0.0.1666 + plugins manager suite
Welbrook AL1530 actif loop antenna
Selmar 2-PA 320 mini VHF/UHF actif antenna
5 element FM

satnipper
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Re: Ideal MWDX Equipment?

Post by satnipper » 17 Nov 2018 21:27

Search on eBay for seller kafa2500

PascalD
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Joined: 29 Dec 2016 12:32
Location: l'hay les roses, Ile de France & Auray, Bretagne

Re: Ideal MWDX Equipment?

Post by PascalD » 17 Nov 2018 22:10

Thank you Stuart, i visit kafa2500 ebay shop but find no balun for the requirement so i send a message asking if they can help for my request.

Good Luck and happy DX-ing!!

Cordialement

Pascal
Kenwood TS850s
Kenwood R-1000
Sony XDR 1FD
Uniden UCB 3500XLT
R820T2 SDR + software v1.0.0.1666 + plugins manager suite
Welbrook AL1530 actif loop antenna
Selmar 2-PA 320 mini VHF/UHF actif antenna
5 element FM

satnipper
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Re: Ideal MWDX Equipment?

Post by satnipper » 18 Nov 2018 00:12


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John Faulkner, Skegness
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Re: Ideal MWDX Equipment?

Post by John Faulkner, Skegness » 18 Nov 2018 00:47

That's interesting regarding the attenuation on MW, Stuart.

My own experience of ham rigs for MW DX have been good. There was a TS rig of Julian's I used a few years ago and it was VERY good on MW. The selectivity and audio quality were both excellent. I don'r recall anything remotely reduced regarding sensitivity. My Icom IC7000 is the same - a very capable MW DX receiver.

satnipper
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Re: Ideal MWDX Equipment?

Post by satnipper » 18 Nov 2018 08:24

This discussion is interesting despite the silly sniping from one ham

https://www.eham.net/ehamforum/smf/inde ... c=101378.0

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Patrick73
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Re: Ideal MWDX Equipment?

Post by Patrick73 » 18 Nov 2018 09:20

satnipper wrote:
13 Nov 2018 16:36
You will have a better chance of success by using a non-amateur rig (see Arctic DX reviews) and using a 2m x 1m flag with small kafa2500 balun and resistors.
Hi Stuart es all,

For DX purpose, will a flag antenna be sensitive enough with such a short length of wire ?
The sketches on kafa2500 page show much larger perimeters but I suppose it should do a good job though.

Thanks anyway for the link, I wasn't aware of this seller (and what a bargain compared to Wellbrook items ! Flag / KAZ amp : £216)
Patrick
Main interests : NDB, MW & FM DX'ing
REU Editor http://www.classaxe.com/dx/ndb/reu

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John Faulkner, Skegness
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Re: Ideal MWDX Equipment?

Post by John Faulkner, Skegness » 18 Nov 2018 09:25

Flags are not 'big signal' antennas, but they provide better signal-to-noise than some other antennas. Their ability as a low angle antenna make them slightly superior to the standard loop, not to mention their unidirectional properties. Flags have a wide forward front lobe and a wide null at the rear which is quite stable across the whole MW band once the resistor is set up. I would go for the flag over a loop any day.

Amplified loops like the ALA1530 have a lot of gain and produce very good signals. The obvious drawbacks is that they are bi-directional and higher-angle receivers.

satnipper
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Re: Ideal MWDX Equipment?

Post by satnipper » 18 Nov 2018 11:38

Patrick

Scottish dxer Davey H had a lot of success with a small indoor flag.

Bien a toi

Stuart

satnipper
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Re: Ideal MWDX Equipment?

Post by satnipper » 18 Nov 2018 11:49

Patrick

Attached is a poor picture (sorry about the sun - lovely here in the western coastal scouselands this morning) of the business end of my Flag antenna. Look at how small the vertical section is - I am using a kafa2500 Flag balun. Now my location is much better than yours for NA but all the same this antenna is a thousand times better for MF DX than a Wellbrook loop. I have had west coast and prairies booming in.

I will eat an andouillete sausage if your well constructed flag antenna is not superior to a loop...

bien a toi

Stuart
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Patrick73
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Re: Ideal MWDX Equipment?

Post by Patrick73 » 18 Nov 2018 12:02

Merci Stuart !

I own an ALA1530LN loop and I'm happy with it. But it's actually the only 'decent' antenna I can mount on my very small balcony (3rd floor of a building).
No doubt a flag is better but I'm afraid I can't build one here with such a restricted space. Keep smiling, you won't eat andouillette sausage today !
Patrick
Main interests : NDB, MW & FM DX'ing
REU Editor http://www.classaxe.com/dx/ndb/reu

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John Faulkner, Skegness
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Re: Ideal MWDX Equipment?

Post by John Faulkner, Skegness » 18 Nov 2018 16:43

Ah. I tried to eat Andouillette de Troyes once, at a L'aire (motorway service station) just outside Troyes. Note the word "tried". I did not succeed.

:lol:

satnipper
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Re: Ideal MWDX Equipment?

Post by satnipper » 18 Nov 2018 19:03

It was an unfair dare as I actually do like Andouillette but many rosbifs don't! Not bad with loads of mustard but don't smell it too closely!

PascalD
Posts: 103
Joined: 29 Dec 2016 12:32
Location: l'hay les roses, Ile de France & Auray, Bretagne

Re: Ideal MWDX Equipment?

Post by PascalD » 18 Nov 2018 19:51

L’andouillette in sauce moutard and chips is my favorate mid-day Wednesday meal washed down with a bottle of Chablis for hiding the strong andouillette smell left in the mouth :-)
Kenwood TS850s
Kenwood R-1000
Sony XDR 1FD
Uniden UCB 3500XLT
R820T2 SDR + software v1.0.0.1666 + plugins manager suite
Welbrook AL1530 actif loop antenna
Selmar 2-PA 320 mini VHF/UHF actif antenna
5 element FM

PascalD
Posts: 103
Joined: 29 Dec 2016 12:32
Location: l'hay les roses, Ile de France & Auray, Bretagne

Re: Ideal MWDX Equipment?

Post by PascalD » 18 Nov 2018 19:59

Stuart, John merci for your help advice with my Post as i have ordered the kafa2500 balun from Canada and will arrive next month i hope not late for MWDX Season? I must now find a good recepteur for MWDX which will also i can take on holidays and use in Brittany, any idea's?

Good Luck and happy DX-ing!!

Cordialement

Pascal
Kenwood TS850s
Kenwood R-1000
Sony XDR 1FD
Uniden UCB 3500XLT
R820T2 SDR + software v1.0.0.1666 + plugins manager suite
Welbrook AL1530 actif loop antenna
Selmar 2-PA 320 mini VHF/UHF actif antenna
5 element FM

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