Date   

Re: Ultralight Radio with Youloop

Mike Wolfson <nwhkr319@...>
 

Thanks. Saw the recent video.  Did not know about the comments.  Interesting comment from Prog.  The description on the Airspy page makes reference to being designed with the HF+ in mind but lacks detail 9r a more complete explanation.

Mike

On Fri, Aug 13, 2021, 6:03 AM Grant Porter <grantbob@...> wrote:
I was watching this https://www.youtube.com/watch?v=Y3pEdw1c358 a day or so ago where Kevin was building his own youloop as well as trying out one of the  knockoffs. There's some comments from the designer of the youloop in the comments (if you dare to wade through YouTube comments):

prog' :  @Kevin Loughin  Here's a small list: The transmission line can de-tune the loop if too long - the original one must be used, The bandwidth and insertion loss of the transformer can deteriorate the SNR, The capacitance between the core and the shield of the cables must be accurate because it's used to tune the loop, If using an old HF+ the part marked R3 must be shorted, If a short transmission line is not possible, a preamp should be added after the Tee component - preferably a single-ended High Z preamp.\
@Kevin Loughin  No, it's not narrow band, and it's not Low Z. Check this video to understand the difference: https://www.youtube.com/watch?v=MNfc09SwwX8 So, this antenna was designed specifically for the HF+ Discovery. Any radio capable of MDS below -140 dBm would work, but there aren't that many. The Discovery knows how to "tune it" because it has the circuitry for it. Other radios may not be suitable. And btw, we supply a 2m RG402 coax with the genuine build. The Chinese don't necessarily know why and they replaced it with whatever they had in hand that is cheaper than RG402. I believe you were a collateral victim of this negligence. For the theory of operation, you can check the archives of our mailing list. Things started in 2017.
Sounds like it might not be the best match for most portables without some fiddling.
-Grant


Re: Ultralight Radio with Youloop

Grant Porter
 

I was watching this https://www.youtube.com/watch?v=Y3pEdw1c358 a day or so ago where Kevin was building his own youloop as well as trying out one of the  knockoffs. There's some comments from the designer of the youloop in the comments (if you dare to wade through YouTube comments):

prog' :  @Kevin Loughin  Here's a small list: The transmission line can de-tune the loop if too long - the original one must be used, The bandwidth and insertion loss of the transformer can deteriorate the SNR, The capacitance between the core and the shield of the cables must be accurate because it's used to tune the loop, If using an old HF+ the part marked R3 must be shorted, If a short transmission line is not possible, a preamp should be added after the Tee component - preferably a single-ended High Z preamp.\
@Kevin Loughin  No, it's not narrow band, and it's not Low Z. Check this video to understand the difference: https://www.youtube.com/watch?v=MNfc09SwwX8 So, this antenna was designed specifically for the HF+ Discovery. Any radio capable of MDS below -140 dBm would work, but there aren't that many. The Discovery knows how to "tune it" because it has the circuitry for it. Other radios may not be suitable. And btw, we supply a 2m RG402 coax with the genuine build. The Chinese don't necessarily know why and they replaced it with whatever they had in hand that is cheaper than RG402. I believe you were a collateral victim of this negligence. For the theory of operation, you can check the archives of our mailing list. Things started in 2017.
Sounds like it might not be the best match for most portables without some fiddling.
-Grant


Re: Air Band Receivers

DX Pedro
 

Many thanks for this. This helps a lot!

On Fri, 30 Jul 2021 at 13:51 Dave613 <david.elden.613@...> wrote:
airnav covers a limited list of countries, a more world-wide site is skyvector, e.g. https://skyvector.com/airports/Portugal
Skyvector includes charts as well of course which are useful for air band monitoring (location of navaids, waypoints etc)
Dave.

--
// pedro andrade


XHDATA D-808 external antenna jack question

Jim Townley
 

I just ordered the XHDATA D-808 and later observed a few posts which indicated that the external antenna jack is for all bands except MW. I downloaded a recent PDF of the manual, which states that the external antenna jack is for mw sw fm and the air band. Is this something that they updated at some point in the production, or an error in the manual? Will I have to modify the radio to enhance mw reception with an external antenna?
Thank you in advance,
Jim


Re: 585-2WEB (Outback Radio) at 7,672 miles (12,347 km)

Gary DeBock
 

On Thu, Aug 12, 2021 at 07:28 PM, Paul Blundell wrote:
Nice logging Gary. 
 
As 7RN is "local" for me, I struggle to hear 2WEB.
Actually 7RN is the South Pacific station that we hear 90% of the time here also, Paul.
About 4% of the time 2WEB is all alone on the frequency, and once in a blue moon the underperforming Kiwi Maori station (Radio Ngati Porou) is strong enough to check the parallel with 603 or 765 kHz.

Gary


Re: xhdata d808 mods and hidden features

Gary DeBock
 

On Thu, Aug 12, 2021 at 01:49 PM, <zliangas@...> wrote:
Can this design operate in both MW and Lw?
The construction article gives full information for building either an AM (Medium Wave) or Longwave-optimized loopstick, but even if you choose the AM (MW-optimized) loopstick, it will still boost Longwave sensitivity far past that of the stock model.

Gary


Re: 2021 Ultralight Radio Shootout Review Ready for Download

Mike Wolfson <nwhkr319@...>
 

Thanks for the comments


On Thu, Aug 12, 2021, 6:40 PM Paul S. in CT <dxrx@...> wrote:
Mike, I agree quite a bit with what you wrote, I would look at the Skywave as a better all-round DXer, but the PL-330 has USB/LSB for about the same coin. A trade-off for sure, but function vs. DX has been about the only one 'acceptable'. And for $50, a R9012/R909 with the AN200 passive loop isn't too shabby on AM either.

Regards
Paul S. in CT FN31nl






Re: 585-2WEB (Outback Radio) at 7,672 miles (12,347 km)

Paul Blundell
 

Nice logging Gary. 

As 7RN is "local" for me, I struggle to hear 2WEB.

On Fri, Aug 13, 2021 at 12:13 PM Gary DeBock via groups.io <D1028Gary=aol.com@groups.io> wrote:
Ultralight group member David Sharp is the Breakfast Show announcer on 585-2WEB, a 10 kW station in Bourke, Australia. He shocked me about 10 years ago when I complained on the Ultralight list about the "dumb Australian rock station on 585 kHz that never ID's," sending me an e-QSL after matching my rock music MP3 recording with his song log.

David would have enjoyed listening to 2WEB's rocking signal across 12,347 km of ocean at the Rockwork 4 cliff on Thursday, August 5th, complete with a female-voiced ID and two S9 peaks during pop songs. Rock on, Dave!

585-2WEB   Apparent lottery numbers and female-voiced ID at 1306 on 8-5  https://dreamcrafts.box.com/s/146jmuf608gfyholig7slsyrjfeggics

"Somewhere Over the Rainbow" somewhat above 7RN and the domestic splatter at 1240 on 8-5  https://dreamcrafts.box.com/s/1vcbgvcmeerluiw2b8c809oz9vd8dat7

"Tears of a Clown" hitting a nice peak at 1325 on 8-5  https://dreamcrafts.box.com/s/znqfd1fc7wmz4ajhf93jkhjjwir4hiaf

Gary DeBock (DXing at the Rockwork 4 ocean cliff near Manzanita, OR, USA)
7.5" loopstick CC Skywave  Ultralight + 8" (20cm) FSL antenna



--
Paul


585-2WEB (Outback Radio) at 7,672 miles (12,347 km)

Gary DeBock
 

Ultralight group member David Sharp is the Breakfast Show announcer on 585-2WEB, a 10 kW station in Bourke, Australia. He shocked me about 10 years ago when I complained on the Ultralight list about the "dumb Australian rock station on 585 kHz that never ID's," sending me an e-QSL after matching my rock music MP3 recording with his song log.

David would have enjoyed listening to 2WEB's rocking signal across 12,347 km of ocean at the Rockwork 4 cliff on Thursday, August 5th, complete with a female-voiced ID and two S9 peaks during pop songs. Rock on, Dave!

585-2WEB   Apparent lottery numbers and female-voiced ID at 1306 on 8-5  https://dreamcrafts.box.com/s/146jmuf608gfyholig7slsyrjfeggics

"Somewhere Over the Rainbow" somewhat above 7RN and the domestic splatter at 1240 on 8-5  https://dreamcrafts.box.com/s/1vcbgvcmeerluiw2b8c809oz9vd8dat7

"Tears of a Clown" hitting a nice peak at 1325 on 8-5  https://dreamcrafts.box.com/s/znqfd1fc7wmz4ajhf93jkhjjwir4hiaf

Gary DeBock (DXing at the Rockwork 4 ocean cliff near Manzanita, OR, USA)
7.5" loopstick CC Skywave  Ultralight + 8" (20cm) FSL antenna


Extended DX Project - 11/08/2021

Paul Blundell
 

Time: 8:30PM
Radio: Digitech AR-1733 + 3" FSL
-------------------------
**MWDxerDB - Report**
Report Date: 08/12/2021
Report Time: 11:53:51
-------------------------

Freq / Name: 0531 - 3GG
Details: Warragul - Commercial - 5000w - 384km 
Notes: 11/08/2021 - ULDXIndex = 0.18432

Freq / Name: 0549 - 2CR
Details: Cumnock - National - 50000w - 954km 
Notes: 11/08/2021 - ULDXIndex = 0.05724
 
Freq / Name: 0621 - 3RN
Details: Melbourne - National - 50000w - 459km 
Notes: 11/08/2021 - ULDXIndex = 0.02754
 
Freq / Name: 0693 - 3AW
Details: Melbourne - Commercial - 5000w - 458km
Notes: 11/08/2021 - ULDXIndex =0.17404 
 
Freq / Name: 0774 - 3LO
Details: Melbourne - National - 50000w - 459km 
Notes: 11/08/2021 - ULDXIndex = 0.2754 
 
Freq / Name: 0828 - 3GI
Details: Sale - National - 10000w - 360km
Notes: 11/08/2021 - ULDXIndex = 0.0864 
 
Freq / Name: 0855 - 3CR
Details: Melbourne - Community - 3500w - 446km 
Notes: 11/08/2021 - ULDXIndex = 0.30582857 
 
Freq / Name: 0891 - 5AN
Details: Adelaide - National - 50000w - 1030km 
Notes: 11/08/2021 - ULDXIndex = 0.0618 
 
Freq / Name: 1341 - HPON GEELONG
Details: Geelong - HPON - 5000w - 429km
Notes: 11/08/2021 - ULDXIndex = 0.2574 
 
Freq / Name: 1422 - HPON MELBOURNE
Details: Melbourne - HPON - 5000w - 449km
Notes: 11/08/2021 - ULDXIndex = 0.21552


Extended DX Project - 10/08/2021

Paul Blundell
 

Time: 7:45PM
Radio: Digitech AR-1733
 
-------------------------
**MWDxerDB - Report**
Report Date: 08/11/2021
Report Time: 10:02:30
-------------------------
Freq / Name: 0531 - 3GG
Details: Warragul - Commercial - 5000w - 384km 
Notes: 10/08/2021 - ULDXIndex = 0.14592

Freq / Name: 0549 - 2CR
Details: Cumnock - National - 50000w - 954km 
Notes: 10/08/2021 - ULDXIndex = 0.036252 

Freq / Name: 0621 - 3RN
Details: Melbourne - National - 50000w - 459km 
Notes: 10/08/2021 - ULDXIndex = 0.02754

Freq / Name: 0693 - 3AW
Details: Melbourne - Commercial - 5000w - 458km
Notes: 10/08/2021 - ULDXIndex =0.17404 

Freq / Name: 0774 - 3LO
Details: Melbourne - National - 50000w - 459km 
Notes: 10/08/2021 - ULDXIndex = 0.022032 

Freq / Name: 0828 - 3GI
Details: Sale - National - 10000w - 360km
Notes: 10/08/2021 - ULDXIndex = 0.0864 

Freq / Name: 0855 - 3CR
Details: Melbourne - Community - 3500w - 446km 
Notes: 10/08/2021 - ULDXIndex = 0.30582857 

Freq / Name: 0891 - 5AN
Details: Adelaide - National - 50000w - 1030km 
Notes: 10/08/2021 - ULDXIndex = 0.2884 

Freq / Name: 1341 - HPON GEELONG
Details: Geelong - HPON - 5000w - 429km
Notes: 10/08/2021 - ULDXIndex = 0.20592

Freq / Name: 1422 - HPON MELBOURNE
Details: Melbourne - HPON - 5000w - 449km
Notes: 10/08/2021 - ULDXIndex = 0.21552


Re: 1040 Brazil Rádio Capital ID SP 7225km Barefoot XHDATA D-808

Paul Blundell
 

Another great video Peter.

Paul

On Fri, Aug 13, 2021 at 3:07 AM Peter 1956 <pe1etr@...> wrote:
https://youtu.be/21DvPZFFeDs

Peter
Botswana



--
Paul


Re: 2021 Ultralight Radio Shootout Review Ready for Download

Paul S. in CT
 

Mike, I agree quite a bit with what you wrote, I would look at the Skywave as a better all-round DXer, but the PL-330 has USB/LSB for about the same coin. A trade-off for sure, but function vs. DX has been about the only one 'acceptable'. And for $50, a R9012/R909 with the AN200 passive loop isn't too shabby on AM either.

Regards
Paul S. in CT FN31nl


Logs for August 12,2021

Carl DeWhitt
 

KOKC 1520 Oklahoma City,OK.0600-0605 EDT August 12,2021.ID" KOKC,Oklahoma City" , then into CBS News.Poor-very poor.    WDSL 1520 Mocksville,NC 0605-0615 EDT August 12,2021.Ad for Carolina Prospectors( which is in Statesville and part of their broadcast area),then into country music.Lost in jumble. Poor.               WCSL 1590 Cherryville,NC.0721 EDT August 12,2021. Briefly out of noise with ad for a business( Acre or Eaker ?) in Cherryville.Mention of Highway 161. Poor. Carl DeWhitt ,Knoxville,TN. Skywave SSB barefoot and with Terk Advantage loop.


Re: xhdata d808 mods and hidden features

Zacharias Liangas
 

Can this design operate in both MW and Lw?


1040 Brazil Rádio Capital ID SP 7225km Barefoot XHDATA D-808

Peter 1956
 


Re: xhdata d808 mods and hidden features

biometuy
 

Thanks Gary:

I will try this mod, I also do a passive resonate Ferrite loop stick and increase the sensitivy but the noise floor of the radio itself is very very high, also the radio have noise even if the audio potentiometer is zero volume, I thaink its a poor desgign of the audio system, its a shame the continous hiss the radio have.

thanks 

JM


Re: 2021 Ultralight Radio Shootout Review Ready for Download

Mike Wolfson <nwhkr319@...>
 

Good points.  I remember quality issues with different production runs on the 800 and E1.  I had 2 2010s and had to get one repaired because of the fet issue.  No radio is perfect.  I may be off base with my opinion of the 330.  I have a Skywave and feel confident about how it will hold up longterm.  My impression is that it's a higher quality radio than some of the other ultralights out there.

Mike

On Thu, Aug 12, 2021, 6:42 AM radiojayallen <radiojayallen@...> wrote:
Mike,

It's funny that you mention the Satellit 800 and E1 because they are top performers and the E1 was a breakthrough in some ways, as a portable with Sync which worked (very well) in three modes (Upper, Lower and Dual Sideband), plus Passband tuning and variable AGC timing. I have no other portables with all these features so although I wish they hadn't had the problems, when you got a good one (as most were) you have something really special. I still have my Sat 800 and two E1's and although I had to remove the sticky mess on my E1's I would never part with them.

Also consider that more often than not these problems are blown out of proportion on the internet. Think about the Sony 2010. It's an excellent radio but you can read for days about issues they were susceptible to. It is unfortunate it had these issues but the 2010 still stands as a great radio.

But to get to your point, I don't think the PL-330 is liable to be problematic because of its features which are all part of a DSP chip...these features are there to be enabled or not enabled by the designers and you could disable them and not materially affect the reliability of the radio.

Jay


Re: 2021 Ultralight Radio Shootout Review Ready for Download

radiojayallen
 

Mike,

It's funny that you mention the Satellit 800 and E1 because they are top performers and the E1 was a breakthrough in some ways, as a portable with Sync which worked (very well) in three modes (Upper, Lower and Dual Sideband), plus Passband tuning and variable AGC timing. I have no other portables with all these features so although I wish they hadn't had the problems, when you got a good one (as most were) you have something really special. I still have my Sat 800 and two E1's and although I had to remove the sticky mess on my E1's I would never part with them.

Also consider that more often than not these problems are blown out of proportion on the internet. Think about the Sony 2010. It's an excellent radio but you can read for days about issues they were susceptible to. It is unfortunate it had these issues but the 2010 still stands as a great radio.

But to get to your point, I don't think the PL-330 is liable to be problematic because of its features which are all part of a DSP chip...these features are there to be enabled or not enabled by the designers and you could disable them and not materially affect the reliability of the radio.

Jay


Re: Ultralight Radio with Youloop

Mike Wolfson <nwhkr319@...>
 

Thanks for the feedback.  I had one for awhile and tried it on my SDR and was not impressed.  Ended up returning it.  

Have seen some recent chatter about the antenna and got curious about the experience of other users.  

Consensus seems to be similar to your experience.  An amplifier is needed for decent results, but that defeats the benefits of a passive antenna.  Size still matters.

Thanks,

Mike


On Thu, Aug 12, 2021, 5:38 AM mediumwavedx <desertbilly@...> wrote:
Hi Mike,
 
Excellent question and something I hadn't tried with an ultralight.
 
I inductively coupled my Youloop to my R-108 this morning. The standard 1 meter Youloop diameter shows about a 3 dB gain over the stock internal ferrite bar on 1 KW WGVA in Geneva, NY on 1240 KHz, so it shows promise.
 
It's possible to approximately double the size of the Youloop using the 6 ft. feed coax that comes with it, by joining the two 3 ft. lengths of coax together with a coupling and using them as one half and the 6 ft. section as the other half of the loop. Doing so resulted in about a 6 dB gain on the same station (over the internal ferrite bar).
 
Better results should be had with a little amplification using a preamp.
 
I was surprised seeing any gain at all. These small single turned coaxial loops don't output much signal.
 
Bill

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