Date   

Re: Loggings - 03/08/2021

 

So your thinking of finding a way to include signal level in it? I ould be happy to help you work out how to do this.

 
 
Sent: Wednesday, August 04, 2021 at 5:54 PM
From: "Paul Blundell" <tanger32au@...>
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Loggings - 03/08/2021
That makes sense. For my own purposes I might take this idea and expand on it and see what numbers I can come up with.
 
Paul
 
On Wed, 4 Aug 2021, 17:17 Jorge Garzón via groups.io, <iberiaDX=yahoo.com@groups.io> wrote:
In my opinion, a multiplying factor is very difficult to apply because that is a qualitative and not cuantitative feature, so it's difficult to measure it accurately. There is a way to convert this into numbers and this is the SINPO or SIO codes widely used in SW listening. 
 
The quality of a received signal on MW depends not just on power and distance, but also on fading, type of rx antenna and most important, QRM and location, including local attenuation of buildings, shape of valleys and several ones. 
 
We are basically trying to measure if our receivers are able to catch or not a signal. Now that the Olympics are going on, would be like... "we are interested to know if a 400m runner finishes the race but not his/her level of fatigue". 
 
Thank you very much to share your opinions and comments. 
 
73!

 

 


Re: Loggings - 03/08/2021

 

Not really a fair example. To me it is more like did they win by 1m or 50m...

 
 
Sent: Wednesday, August 04, 2021 at 5:17 PM
From: "Jorge Garzón via groups.io" <iberiaDX@...>
To: "main@UltralightDX.groups.io" <main@UltralightDX.groups.io>
Subject: Re: [UltralightDX] Loggings - 03/08/2021
In my opinion, a multiplying factor is very difficult to apply because that is a qualitative and not cuantitative feature, so it's difficult to measure it accurately. There is a way to convert this into numbers and this is the SINPO or SIO codes widely used in SW listening. 
 
The quality of a received signal on MW depends not just on power and distance, but also on fading, type of rx antenna and most important, QRM and location, including local attenuation of buildings, shape of valleys and several ones. 
 
We are basically trying to measure if our receivers are able to catch or not a signal. Now that the Olympics are going on, would be like... "we are interested to know if a 400m runner finishes the race but not his/her level of fatigue". 
 
Thank you very much to share your opinions and comments. 
 
73!


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

hamrad45
 

Sorry, have not followed your post closely until recently.  Where are you located approximately and what are these stations.  Thanks and have a great day.

 

Tom Stiles

 

From: main@UltralightDX.groups.io [mailto:main@UltralightDX.groups.io] On Behalf Of Paul Blundell
Sent: Tuesday, August 3, 2021 11:34 PM
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Retekess V-115 FM/AM/SW Radio Review – July 2021

 

Fourteen Days In:

Today I took the chance of a break in the terrible weather to get and about and undertaking some side by side testing of my Retekess V-115 in a lower RF environment. Below are the results.

 

 

As you can see, it really struggled and the AR-1733 easily won on every frequency checked.

 

 

 

On Wed, Aug 4, 2021 at 11:40 AM trrs73 <trrs73@...> wrote:

Will do.

Tom Stiles


 

--

Paul

 


Re: Loggings - 03/08/2021

Paul Blundell
 

That makes sense. For my own purposes I might take this idea and expand on it and see what numbers I can come up with.

Paul

On Wed, 4 Aug 2021, 17:17 Jorge Garzón via groups.io, <iberiaDX=yahoo.com@groups.io> wrote:
In my opinion, a multiplying factor is very difficult to apply because that is a qualitative and not cuantitative feature, so it's difficult to measure it accurately. There is a way to convert this into numbers and this is the SINPO or SIO codes widely used in SW listening. 

The quality of a received signal on MW depends not just on power and distance, but also on fading, type of rx antenna and most important, QRM and location, including local attenuation of buildings, shape of valleys and several ones. 

We are basically trying to measure if our receivers are able to catch or not a signal. Now that the Olympics are going on, would be like... "we are interested to know if a 400m runner finishes the race but not his/her level of fatigue". 

Thank you very much to share your opinions and comments. 

73!


Re: More barefoot D-808 videos

Peter 1956
 

Thanks Paul and Frank.
Peter


Re: Loggings - 03/08/2021

Jorge Garzón
 

In my opinion, a multiplying factor is very difficult to apply because that is a qualitative and not cuantitative feature, so it's difficult to measure it accurately. There is a way to convert this into numbers and this is the SINPO or SIO codes widely used in SW listening. 

The quality of a received signal on MW depends not just on power and distance, but also on fading, type of rx antenna and most important, QRM and location, including local attenuation of buildings, shape of valleys and several ones. 

We are basically trying to measure if our receivers are able to catch or not a signal. Now that the Olympics are going on, would be like... "we are interested to know if a 400m runner finishes the race but not his/her level of fatigue". 

Thank you very much to share your opinions and comments. 

73!


Re: Loggings - 03/08/2021

Paul Blundell
 

Good point.

Could we look at having a way to add / account for the signal strength? Maybe a multiplier factor of 1 - 5 for how "good" the signal is?

On Wed, Aug 4, 2021 at 4:39 PM Jorge Garzón via groups.io <iberiaDX=yahoo.com@groups.io> wrote:
Hi Frank,
I am finishing a post about the UL DX Index with clearer and extended info. It will be available in 24 h on my blog. The Index just shows the difficult a signal is to be heard in our ULR and Small Portables assuming that transmitting power is the main reason to catch a signal, then the distance, at least on LW and MW (0,1 to 2000 kHz). 
Most of the times we are thinking that distance is the most important, but technically hearing a 1w signal at a distance of 100 km is a better catch that a 5 kW station at 5.000 km. 
Physically is a better listening although can be less exciting for some DXers. But we are just numbering how difficult is but not the personal excitement given by a good catch. 

Variation of signal strength does not change the index. That's why we offer two categories: barefoot receivers and receivers inductively coupled with an external loop or wire aerial. 

Every comment on this matter will give us opportunities to find the best way to use and score it. 
73
--
Jorge Garzón (EB7EFA · EA1036 SWL) 
QTH: IN83ag / 43º15' N · 03º56' W
Urb. San Roque 95, casa 5 (Villasevil)
39698 Santiurde de Toranzo (ESPAÑA - SPAIN)
..................................................................................
Blog: IberiaDX  · Twitter: @IberiaDX



--
Paul


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

Paul Blundell
 

That is my TEAC PR130, that has always been my backup radio. These days it does not get much use. I might see how that performs against the V-115.


On Wed, Aug 4, 2021 at 2:44 PM Frank Standford <dxer2k1@...> wrote:
Very interesting results. The AR1733 was easily better on all stations? What is the thing with the white sticker in your case? Another radio? Did you compare it with that?
 
 
Sent: Wednesday, August 04, 2021 at 1:33 PM
From: "Paul Blundell" <tanger32au@...>
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Retekess V-115 FM/AM/SW Radio Review – July 2021
Fourteen Days In:
Today I took the chance of a break in the terrible weather to get and about and undertaking some side by side testing of my Retekess V-115 in a lower RF environment. Below are the results.
 
 
As you can see, it really struggled and the AR-1733 easily won on every frequency checked.
 
 
 
On Wed, Aug 4, 2021 at 11:40 AM trrs73 <trrs73@...> wrote:
Will do.

Tom Stiles

 

 

 
 
--
Paul
 



--
Paul


Re: Loggings - 03/08/2021

Paul Blundell
 

That's correct, just the internal aerial.
I do also wonder if adding something about the signal level might help. Is logging a signal poorly from 5000km away better than logging a signal which is much stronger from 3000km away?

On Wed, Aug 4, 2021 at 2:42 PM Frank Standford <dxer2k1@...> wrote:
I assume these were with no external aerial? I wonder if we could look at a scoring system for this index which also includes a part which covers signal levels? That way logging a signal at a better level would increase the index?
 
 
Sent: Wednesday, August 04, 2021 at 11:06 AM
From: "Paul Blundell" <tanger32au@...>
To: main@UltralightDX.groups.io
Subject: [UltralightDX] Loggings - 03/08/2021

The below were logged last night between 8:00pm and 8:30pm using my Retekess V-115 at home.

-------------------------
**MWDxerDB - Report**
Report Date: 08/04/2021
Report Time: 10:53:16
-------------------------

Freq / Name: 0873 - 2GB
Details: Sydney - Commercial - 6000w
Notes: 03/08/2021 - ULDXIndex = 0.1518 

Freq / Name: 1539 - HPON
Details: Adelaide - HPON - 5000w 
Notes: 03/08/2021 - ULDXIndex = 0.2104 



--
Paul


Re: Loggings - 03/08/2021

Jorge Garzón
 

Hi Frank,
I am finishing a post about the UL DX Index with clearer and extended info. It will be available in 24 h on my blog. The Index just shows the difficult a signal is to be heard in our ULR and Small Portables assuming that transmitting power is the main reason to catch a signal, then the distance, at least on LW and MW (0,1 to 2000 kHz). 
Most of the times we are thinking that distance is the most important, but technically hearing a 1w signal at a distance of 100 km is a better catch that a 5 kW station at 5.000 km. 
Physically is a better listening although can be less exciting for some DXers. But we are just numbering how difficult is but not the personal excitement given by a good catch. 

Variation of signal strength does not change the index. That's why we offer two categories: barefoot receivers and receivers inductively coupled with an external loop or wire aerial. 

Every comment on this matter will give us opportunities to find the best way to use and score it. 
73
--
Jorge Garzón (EB7EFA · EA1036 SWL) 
QTH: IN83ag / 43º15' N · 03º56' W
Urb. San Roque 95, casa 5 (Villasevil)
39698 Santiurde de Toranzo (ESPAÑA - SPAIN)
..................................................................................
Blog: IberiaDX  · Twitter: @IberiaDX


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

 

Very interesting results. The AR1733 was easily better on all stations? What is the thing with the white sticker in your case? Another radio? Did you compare it with that?

 
 
Sent: Wednesday, August 04, 2021 at 1:33 PM
From: "Paul Blundell" <tanger32au@...>
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Retekess V-115 FM/AM/SW Radio Review – July 2021
Fourteen Days In:
Today I took the chance of a break in the terrible weather to get and about and undertaking some side by side testing of my Retekess V-115 in a lower RF environment. Below are the results.
 
 
As you can see, it really struggled and the AR-1733 easily won on every frequency checked.
 
 
 
On Wed, Aug 4, 2021 at 11:40 AM trrs73 <trrs73@...> wrote:
Will do.

Tom Stiles

 

 

 
 
--
Paul
 


Re: Loggings - 03/08/2021

 

I assume these were with no external aerial? I wonder if we could look at a scoring system for this index which also includes a part which covers signal levels? That way logging a signal at a better level would increase the index?

 
 
Sent: Wednesday, August 04, 2021 at 11:06 AM
From: "Paul Blundell" <tanger32au@...>
To: main@UltralightDX.groups.io
Subject: [UltralightDX] Loggings - 03/08/2021

The below were logged last night between 8:00pm and 8:30pm using my Retekess V-115 at home.

-------------------------
**MWDxerDB - Report**
Report Date: 08/04/2021
Report Time: 10:53:16
-------------------------

Freq / Name: 0873 - 2GB
Details: Sydney - Commercial - 6000w
Notes: 03/08/2021 - ULDXIndex = 0.1518 

Freq / Name: 1539 - HPON
Details: Adelaide - HPON - 5000w 
Notes: 03/08/2021 - ULDXIndex = 0.2104 


Re: More barefoot D-808 videos

 

Your videos of this again are getting me excited for getting back in to Dxing again.

 
 
Sent: Wednesday, August 04, 2021 at 3:45 AM
From: "Peter 1956" <pe1etr@...>
To: main@UltralightDX.groups.io
Subject: [UltralightDX] More barefoot D-808 videos
1431 DJI VOA Djibouti/Doraleh 4496km
https://youtu.be/ryF4z4bo6CA

1413 BBC WS Oman XHDATA D-808 A’Seela 6388km
https://youtu.be/GFn8aUgf0m4

Magic 828 with ID Klipheuwel (Cape Town) 1146km
https://youtu.be/6_cTB7PyC44

Peter
Botswana


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

 

It is great to read some other reviews of this radio.

 
 
Sent: Wednesday, August 04, 2021 at 3:08 AM
From: "Mark Roberts" <markrobt@...>
To: main@ultralightdx.groups.io
Subject: Re: [UltralightDX] Retekess V-115 FM/AM/SW Radio Review – July 2021
I'm not great at self-promotion, but here we go with my perspective on this radio: http://www.cosmos-monitor.com/radios/tivdio-v115.html
 
On Tue, Aug 3, 2021 at 9:00 AM Zacharias Liangas via groups.io <zliangas=yahoo.com@groups.io> wrote:

[Edited Message Follows]
[Reason: Adds]

One question, when you use earphones, does your internal speaker disconnect? I have noticed with mine that even with earphones connected, the sound still comes out of the speaker

This can happen with earphones used for smartphone ie with mic based that use a 3+1audio plug
Standard l stereo earphones or headphones r disab the speaker audio.
Hope that it helps

 

 


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

 

I will keep this in mind when I use headphones with mine.

 
 
Sent: Wednesday, August 04, 2021 at 1:50 AM
From: "Zacharias Liangas via groups.io" <zliangas@...>
To: main@UltralightDX.groups.io
Subject: Re: [UltralightDX] Retekess V-115 FM/AM/SW Radio Review – July 2021

[Edited Message Follows]
[Reason: Adds]

One question, when you use earphones, does your internal speaker disconnect? I have noticed with mine that even with earphones connected, the sound still comes out of the speaker

This can happen with earphones used for smartphone ie with mic based that use a 3+1audio plug
Standard l stereo earphones or headphones r disab the speaker audio.
Hope that it helps


Re: PL330 battery discharge time

 

I don't own one so can't provide any first hand experiance and the reviews I found don't say. Are you thinking it is too long or too short run time?

 
 
Sent: Tuesday, August 03, 2021 at 7:26 PM
From: "Zacharias Liangas via groups.io" <zliangas@...>
To: main@UltralightDX.groups.io
Subject: [UltralightDX] PL330 battery discharge time
I m repeating my previous question with different wording 
Did anyone noticed or measured the discharge time of the PL330 battery?
I alrssal counted mine PL380 at around 30 hours with earphones and audio set to 7


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

Paul Blundell
 

Fourteen Days In:
Today I took the chance of a break in the terrible weather to get and about and undertaking some side by side testing of my Retekess V-115 in a lower RF environment. Below are the results.


As you can see, it really struggled and the AR-1733 easily won on every frequency checked.



On Wed, Aug 4, 2021 at 11:40 AM trrs73 <trrs73@...> wrote:
Will do.

Tom Stiles



--
Paul


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

trrs73
 

Will do.

Tom Stiles


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

Paul Blundell
 

That sounds great, let us know when it is online.

Paul

On Wed, Aug 4, 2021 at 11:31 AM trrs73 <trrs73@...> wrote:
OK, will be doing a show on your report this week some time.  My channel ID is hamrad88.

Tom Stiles



--
Paul


Re: Retekess V-115 FM/AM/SW Radio Review – July 2021

trrs73
 

OK, will be doing a show on your report this week some time.  My channel ID is hamrad88.

Tom Stiles

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