Date   

Loggings - 29/07/2021

Paul Blundell
 

Retekess V-115 / Internal Aerial
-------------------------
**MWDxerDB - Report**
Report Date: 07/30/2021
Report Time: 11:04:51
-------------------------

Freq / Name: 0981 - 3HA
Details: Hamilton - Commercial - 2000w
Notes:  29/07/2021 - ULDXIndex = 0.3025 

Freq / Name: 1116 - 3AK
Details: Melbourne - Commercial - 5000w
Notes:  29/07/2021 - ULDXIndex = 0.089

Freq / Name: 1278 - 3EE
Details: Melbourne - Commercial - 5000w
Notes:  29/07/2021 - ULDXIndex = 0.089

Freq / Name: 1530 - 2VM
Details: Moree - Commercial - 2000w
Notes:  29/07/2021 - ULDXIndex = 0.6745 

Freq / Name: 1566 - 3NE
Details: Wangaratta - Commercial - 5000w
Notes:  29/07/2021 - ULDXIndex = 0.1144 


Re: Air Band Receivers

Paul Blundell
 

I took your message to mean that you could not access the website at all. I don't know if it has information for any area outside the USA.

Paul

On Fri, Jul 30, 2021 at 8:48 AM DX Pedro <pmm.andrade@...> wrote:
Really? I couldn’t find one single Portuguese airport :/

On Thu, 29 Jul 2021 at 16:14 Steve Whitt <mwneditor@...> wrote:

Airnav.com works fine here in the UK

 

Rgds

Steve

 

From: main@UltralightDX.groups.io [mailto:main@UltralightDX.groups.io] On Behalf Of DX Pedro
Sent: 29 July 2021 15:01
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Air Band Receivers

 

Sadly, US restricted :(

 

// pedro andrade

 

 

On Thu, Jul 22, 2021 at 10:23 PM Joseph Rotman via groups.io <N9JCQ=aol.com@groups.io> wrote:


This is what I use for airport frequencies:https://www.airnav.com/

-----Original Message-----
From: Jock Elliott <jock.elliott@...>
To: main@ultralightdx.groups.io
Sent: Thu, Jul 22, 2021 4:34 am
Subject: Re: [UltralightDX] Air Band Receivers

Radio Reference -- https://www.radioreference.com/apps/db/ -- is an excellent source of frequency information of all sorts, including aviation.

 

I have used it for United States information, and there are pull-downs on the right for other countries, although I don't know how complete or accurate the information is for other countries.

--
// pedro andrade



--
Paul


Re: 1566 KOR HLAZ 12480km before sunset. Barefoot XHDATA D-808

Paul Blundell
 

Nice work Peter.


On Fri, Jul 30, 2021 at 3:20 AM Peter 1956 <pe1etr@...> wrote:
Outside in a rural garden in Botswana. Guest appearance by some sheep.

It might have a low index but I think it isn't bad DX. ;)
https://youtu.be/1nP4NWOHDOs

Peter



--
Paul


Re: Air Band Receivers

Paul Blundell
 

Works fine here in Australian.


On Fri, Jul 30, 2021 at 12:00 AM DX Pedro <pmm.andrade@...> wrote:
Sadly, US restricted :(

// pedro andrade


On Thu, Jul 22, 2021 at 10:23 PM Joseph Rotman via groups.io <N9JCQ=aol.com@groups.io> wrote:

This is what I use for airport frequencies:https://www.airnav.com/

-----Original Message-----
From: Jock Elliott <jock.elliott@...>
To: main@ultralightdx.groups.io
Sent: Thu, Jul 22, 2021 4:34 am
Subject: Re: [UltralightDX] Air Band Receivers

Radio Reference -- https://www.radioreference.com/apps/db/ -- is an excellent source of frequency information of all sorts, including aviation.

I have used it for United States information, and there are pull-downs on the right for other countries, although I don't know how complete or accurate the information is for other countries.



--
Paul


Re: Introducing the ULR DXing Chart-Index

Paul Blundell
 

Excellent point. I think keeping LW and MW separate is a good idea as the numbers for LW can be much higher. 
6.56 for 7BU is a good effort, sadly they switched to FM a couple of years ago. This has had the advantage of helping me as it has opened up 558kHz for some DX from QLD and WA.

On Thu, Jul 29, 2021 at 6:50 PM Gary DeBock via groups.io <D1028Gary=aol.com@groups.io> wrote:
The really astronomical indexes come from low-powered Longwave aeronautical beacons (NDB's) received at ranges over 10,000 km across the equator. 362-WK in Whakatane, New Zealand (25 watts at 11,017 km from Manzanita, Oregon) results in a wacky index of 440.68, while 366-SF in Springfield, New Zealand (50 watts at 10,977 km from Manzanita, Oregon) results in a more modest 219.54.

The best medium wave DX index at the same Rockwork Cliff would be for reception of 558-7BU in Burnie, Tasmania, Australia during the August 2017 DXpedition. That 2,000 watt station was received at 13,128 km from Manzanita, for a very modest index of 6.56.

Gary DeBock (in Puyallup, WA, USA)



--
Paul


Re: Introducing the ULR DXing Chart-Index

Paul Blundell
 

That's a decent effort as my best is 4.609.


On Thu, Jul 29, 2021 at 6:37 PM Peter 1956 <pe1etr@...> wrote:
The only one I can find with an impressive index, was received outdoors next to a car park, in Blackpool UK, on a barefoot XHDATA D-808 at 06:50 UTC on 31st Oct 2019.
1450 USA WPGG Atlantic City NJ 1kW 5449km index 5.449

Peter



--
Paul


Re: Introducing the ULR DXing Chart-Index

Paul Blundell
 

Those are some interesting numbers, I guess any system / index will have advantages and disadvantages.


On Thu, Jul 29, 2021 at 4:01 PM Frank Standford <dxer2k1@...> wrote:
Ideally we could adjust these values, based on our local area and needs. 
I did some quick maths on a few examples.
 
550.0 Example 1 643.0 5000.0 0.129
550.0 Example 2 2500.0 5000.0 0.500
660.0 Example 3 321.0 200.0 1.605
660.0 Example 4 50.0 100.0 0.500
660.0 Example 5 1000.0 500.0 2.000
660.0 Example 6 4023.0 5000.0 0.805
 
 
Sent: Thursday, July 29, 2021 at 3:05 PM
From: "Paul Blundell" <tanger32au@...>
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Introducing the ULR DXing Chart-Index
Given we are a world wide group, we will always have differences in the way things work and what might work for one group / area might not work as well in another.
 
On Thu, Jul 29, 2021 at 2:29 PM Peter 1956 <pe1etr@...> wrote:
Exactly Paul, so there is no point me taking part in this, as I don't have any low power stations close to me. My long distance catches get a low index score. so no point entering them. This whole index concept seems flawed to me.

Peter

 

 

 
 
--
Paul
 



--
Paul


Re: Loggings - 28/07/2021 - Take 2

Paul Blundell
 

Yes it was. The signal on this was good for a 2kw station at that distance.

Paul

On Thu, Jul 29, 2021 at 3:48 PM Frank Standford <dxer2k1@...> wrote:
It looks like 5MV was the best catch? I find it funny to see stations on non 10k spacing.
 
 
Sent: Thursday, July 29, 2021 at 11:54 AM
From: "Paul Blundell" <tanger32au@...>
To: main@UltralightDX.groups.io
Subject: [UltralightDX] Loggings - 28/07/2021 - Take 2
The below were logged last night between 8:15pm and 8:45pm using my Retekess V-115 and 3" FSL at home.
 
-------------------------
**MWDxerDB - Report**
Report Date: 07/29/2021
Report Time: 11:45:17
-------------------------

Freq / Name: 0567 - 4JK
Details: Julia Creek - National -10000w
Notes: 28/07/2021 - ULDXIndex = 0.2358
 
Freq / Name: 0612 - 4QR
Details: Brisbane National 50000
Notes: 28/07/2021 - ULDXIndex = 0.03313 
 
Freq / Name: 0675 - 2CO
Details: Corowa -National - 10000w
Notes: 28/07/2021 - ULDXIndex = 0.0611
 
Freq / Name: 0945 - Bendigo
Details: Bendigo - HPON - 2000w
Notes: 28/07/2021 - ULDXIndex = 0.291 
 
Freq / Name: 0963 - 5SE
Details: Mount Gambier - Commercial - 5000w
Notes: 28/07/2021 - ULDXIndex = 0.1366
 
Freq / Name: 1062 - 5MV
Details: Renmark/Loxton - National - 2000w
Notes: 28/07/2021 -ULDXIndex = 0.4905 
 
Freq / Name: 1170 - 2CH
Details: Sydney - Commercial - 5000w
Notes: 28/07/2021 - ULDXIndex = 0.1822
 
Freq / Name: 1206 - 2CC
Details: Canberra - Commercial - 5000w
Notes: 28/07/2021 - ULDXIndex = 0.1424
 
Freq / Name: 1512 - 2RN
Details: Newcastle - National - 10000w
Notes: 28/07/2021 - ULDXIndex = 0.1039
 



--
Paul


Re: Air Band Receivers

DX Pedro
 

Really? I couldn’t find one single Portuguese airport :/

On Thu, 29 Jul 2021 at 16:14 Steve Whitt <mwneditor@...> wrote:

Airnav.com works fine here in the UK

 

Rgds

Steve

 

From: main@UltralightDX.groups.io [mailto:main@UltralightDX.groups.io] On Behalf Of DX Pedro
Sent: 29 July 2021 15:01
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Air Band Receivers

 

Sadly, US restricted :(

 

// pedro andrade

 

 

On Thu, Jul 22, 2021 at 10:23 PM Joseph Rotman via groups.io <N9JCQ=aol.com@groups.io> wrote:


This is what I use for airport frequencies:https://www.airnav.com/

-----Original Message-----
From: Jock Elliott <jock.elliott@...>
To: main@ultralightdx.groups.io
Sent: Thu, Jul 22, 2021 4:34 am
Subject: Re: [UltralightDX] Air Band Receivers

Radio Reference -- https://www.radioreference.com/apps/db/ -- is an excellent source of frequency information of all sorts, including aviation.

 

I have used it for United States information, and there are pull-downs on the right for other countries, although I don't know how complete or accurate the information is for other countries.

--
// pedro andrade


Re: 1566 KOR HLAZ 12480km before sunset. Barefoot XHDATA D-808

DX Pedro
 

Lol! You have a huge backyard, uh? Those a wonderful receptions, man.
Congrats and thanks for sharing 👌🏼

On Thu, 29 Jul 2021 at 18:55 Peter 1956 <pe1etr@...> wrote:
This one is a tad more parochial.
1449 Maldives 6108km Received in local daylight XHDATA D-808 internal ferrite rod.
https://youtu.be/DHPtcRLMD10
Peter

--
// pedro andrade


Re: 1566 KOR HLAZ 12480km before sunset. Barefoot XHDATA D-808

Peter 1956
 

This one is a tad more parochial.
1449 Maldives 6108km Received in local daylight XHDATA D-808 internal ferrite rod.
https://youtu.be/DHPtcRLMD10
Peter


1566 KOR HLAZ 12480km before sunset. Barefoot XHDATA D-808

Peter 1956
 

Outside in a rural garden in Botswana. Guest appearance by some sheep.

It might have a low index but I think it isn't bad DX. ;)
https://youtu.be/1nP4NWOHDOs

Peter


Re: Air Band Receivers

Steve Whitt
 

Airnav.com works fine here in the UK

 

Rgds

Steve

 

From: main@UltralightDX.groups.io [mailto:main@UltralightDX.groups.io] On Behalf Of DX Pedro
Sent: 29 July 2021 15:01
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Air Band Receivers

 

Sadly, US restricted :(

 

// pedro andrade

 

 

On Thu, Jul 22, 2021 at 10:23 PM Joseph Rotman via groups.io <N9JCQ=aol.com@groups.io> wrote:


This is what I use for airport frequencies:https://www.airnav.com/

-----Original Message-----
From: Jock Elliott <jock.elliott@...>
To: main@ultralightdx.groups.io
Sent: Thu, Jul 22, 2021 4:34 am
Subject: Re: [UltralightDX] Air Band Receivers

Radio Reference -- https://www.radioreference.com/apps/db/ -- is an excellent source of frequency information of all sorts, including aviation.

 

I have used it for United States information, and there are pull-downs on the right for other countries, although I don't know how complete or accurate the information is for other countries.


Re: Air Band Receivers

DX Pedro
 

Sadly, US restricted :(

// pedro andrade


On Thu, Jul 22, 2021 at 10:23 PM Joseph Rotman via groups.io <N9JCQ=aol.com@groups.io> wrote:

This is what I use for airport frequencies:https://www.airnav.com/

-----Original Message-----
From: Jock Elliott <jock.elliott@...>
To: main@ultralightdx.groups.io
Sent: Thu, Jul 22, 2021 4:34 am
Subject: Re: [UltralightDX] Air Band Receivers

Radio Reference -- https://www.radioreference.com/apps/db/ -- is an excellent source of frequency information of all sorts, including aviation.

I have used it for United States information, and there are pull-downs on the right for other countries, although I don't know how complete or accurate the information is for other countries.


Re: Ferrite technical considerations for FSL’s

Robert Conboy
 

Interesting! A Varactor tuned ferrite sleeve loop with a preamp, and a rotator for remote operation. I would have thought that the varactors would be too temperature sensitive, and too low Q - but apparently not. I have a 5-500 pF vacuum variable capacitor for use in a future similar project.

I have gone a different direction with the active part, using an amplifier for regenerative feedback to overcome losses in the ferrite. This enables Q to be dialed up high enough to eliminate the audio almost entirely while looking at carriers and their offsets using an SDR. Gain is in the neighborhood of 50 dB while -3dB bandwidth is about 20 Hz just before oscillation.

 It is also useful for cleaning up extremely weak audio with lower Q settings (that are still higher than attainable without feedback, gain in the neighborhood of 35 dB with -3dB bandwidth about 100 Hz. This bandwidth results in audio that is heard at very low level, (turn up the volume) but noise is even lower.  It is not as low bass heavy as one would expect because the speaker in a tiny  portable radio is incapable of reproducing it. 

Ferrite sheets are an interesting proposition, if they can have high enough permeability to overcome their thinness, with low enough losses to attain good selectivity, and large enough for antenna use. Ferrite designed for EMI suppression is deliberately extremely lossy. I have made the assumption sheet ferrites aren’t suitable, but I have been wrong before.



On Jul 29, 2021, at 5:01 AM, valentino barbi <barbivalentino@...> wrote:


Il giorno gio 29 lug 2021 alle ore 10:02 i2NDT Claudio via groups.io <i2ndt=yahoo.it@groups.io> ha scritto:
this could be another way to make a ferrite sleeve:

https://swling.com/blog/2017/07/valentino-experiments-with-a-ferrite-sheet-loop-antenna/

using ferrite sheets which are much more light and cheep than ferrite roads...

https://www.shopnfc.com/it/tag-nfc-schermati/157-115-ferrite-adesiva-per-tag-nfc-schermati.html#/40-formato-foglio_a4

best DX
de
i2NDT Claudio


Re: Ferrite technical considerations for FSL’s

valentino barbi
 

Il giorno gio 29 lug 2021 alle ore 10:02 i2NDT Claudio via groups.io <i2ndt=yahoo.it@groups.io> ha scritto:
this could be another way to make a ferrite sleeve:

https://swling.com/blog/2017/07/valentino-experiments-with-a-ferrite-sheet-loop-antenna/

using ferrite sheets which are much more light and cheep than ferrite roads...

https://www.shopnfc.com/it/tag-nfc-schermati/157-115-ferrite-adesiva-per-tag-nfc-schermati.html#/40-formato-foglio_a4

best DX
de
i2NDT Claudio


Re: Introducing the ULR DXing Chart-Index

Gary DeBock
 

The really astronomical indexes come from low-powered Longwave aeronautical beacons (NDB's) received at ranges over 10,000 km across the equator. 362-WK in Whakatane, New Zealand (25 watts at 11,017 km from Manzanita, Oregon) results in a wacky index of 440.68, while 366-SF in Springfield, New Zealand (50 watts at 10,977 km from Manzanita, Oregon) results in a more modest 219.54.

The best medium wave DX index at the same Rockwork Cliff would be for reception of 558-7BU in Burnie, Tasmania, Australia during the August 2017 DXpedition. That 2,000 watt station was received at 13,128 km from Manzanita, for a very modest index of 6.56.

Gary DeBock (in Puyallup, WA, USA)


Re: Introducing the ULR DXing Chart-Index

Peter 1956
 

The only one I can find with an impressive index, was received outdoors next to a car park, in Blackpool UK, on a barefoot XHDATA D-808 at 06:50 UTC on 31st Oct 2019.
1450 USA WPGG Atlantic City NJ 1kW 5449km index 5.449

Peter


Re: Ferrite technical considerations for FSL’s

i2NDT Claudio
 

this could be another way to make a ferrite sleeve:

https://swling.com/blog/2017/07/valentino-experiments-with-a-ferrite-sheet-loop-antenna/

using ferrite sheets which are much more light and cheep than ferrite roads...

https://www.shopnfc.com/it/tag-nfc-schermati/157-115-ferrite-adesiva-per-tag-nfc-schermati.html#/40-formato-foglio_a4

best DX
de
i2NDT Claudio


Re: Introducing the ULR DXing Chart-Index

 

Ideally we could adjust these values, based on our local area and needs. 
I did some quick maths on a few examples.
 
550.0 Example 1 643.0 5000.0 0.129
550.0 Example 2 2500.0 5000.0 0.500
660.0 Example 3 321.0 200.0 1.605
660.0 Example 4 50.0 100.0 0.500
660.0 Example 5 1000.0 500.0 2.000
660.0 Example 6 4023.0 5000.0 0.805

 
 
Sent: Thursday, July 29, 2021 at 3:05 PM
From: "Paul Blundell" <tanger32au@...>
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Introducing the ULR DXing Chart-Index
Given we are a world wide group, we will always have differences in the way things work and what might work for one group / area might not work as well in another.
 
On Thu, Jul 29, 2021 at 2:29 PM Peter 1956 <pe1etr@...> wrote:
Exactly Paul, so there is no point me taking part in this, as I don't have any low power stations close to me. My long distance catches get a low index score. so no point entering them. This whole index concept seems flawed to me.

Peter

 

 

 
 
--
Paul
 

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