Date   

Re: New Design 3 Inch Baby FSL Antenna Demo Video

lamontcranston17
 

Hi Gary,
 Have you ever measured Q of any of your FSLs?
I thought Q was important from when I first heard of the FSL,
although, when a guru responded in an email,
"Q has next to no relation to how the FSL will actually perform."
I questioned him on that, he got mad, and stopped responding to my email.

 The fact that you use 1162 count litz and this new capacitor that
can be tuned more sharply is just more evidence that Q is important.
  But is there something I don't understand where Litz could be important,
but Q is not? Doesn't make sense to me.
 Have you ever measured the Q at top, bottom and middle of the band?
  Just curious what the Q range on your FSLs is.
                           Thanks, Mikek


Re: Radio Bargains

Dan Merta
 

I like that Phillips clock radio. I have one of those Dick Smith ones, it has a strange quirk in that it seems to mute out the white noise between stations, almost like it has a squelch feature on it. Mines only good for local station listening. 
Dan.  


Re: Digitech AR-1780 - My Thoughts:

Dan Merta
 

Thanks for the review, I too find it's really good on FM. I'm hoping to get the time to do a Dxpedition to Wilson's Prom one day & take it to Mt Obrion to try and pick up some of the Tas FM stations. 
Also agree the muting when tuning between freq is an issue. 
Cheers. Dan. 


Re: 3 Inch FSL Tecsun PL-380 Model

Gary DeBock
 

OK Jerry,

Feel free to send the model here if you wish-- if it's an easy fix I won't ask for any repair $$, and send it back to you. If the 100mm ferrite bars are cracked there isn't much I can do, though, since they are no longer available (and in great demand).

73, Gary


Re: Digitech AR-1780 - My Thoughts:

keith beesley
 

Thanks for the review, Paul. Very interesting. I don't think this model is available in the US, but may be under a different name. 


Keith Beesley
Seattle WA USA

On Thursday, June 20, 2019, 6:44:10 PM PDT, Paul Blundell <tanger32au@...> wrote:


https://tassieradiorxer.blogspot.com/2019/06/digitech-ar-1780-my-thoughts.html
--
Paul - Moderator
UltralightDX


Digitech AR-1780 - My Thoughts:

Paul Blundell
 

https://tassieradiorxer.blogspot.com/2019/06/digitech-ar-1780-my-thoughts.html
--
Paul - Moderator
UltralightDX


Re: 3 Inch FSL Tecsun PL-380 Model

Jerry Rappel <ww0e@...>
 

Upon closer inspection, the 2 wires coming out from the radio case, that are both inside the shrink tube,
were used. The 2 wires are still soldered to the circuit board,inside the case, a friend did this for me.
I believe there are more than 36 total turns of the Litz wire that have been wound around the bar assembly, my windings. The 8 ferrite bars are lined up as close as I could get them to perfect.
I'd say it  looks like the Litz/ferrite assemble need redone, and soldered to the wire
from the shrink tube again.

Jerry




From: "Gary DeBock via Groups.Io" <D1028Gary@...>
To: "main" <main@UltralightDX.groups.io>
Sent: Thursday, June 20, 2019 6:51:38 PM
Subject: Re: [UltralightDX] 3 Inch FSL Tecsun PL-380 Model

Jerry,

From an eyesight point of view, the most challenging part of that project was to solder the two 250/46 Litz wires onto the two PL-380 circuit board terminals. Possible problems in that process include cold solder joints, solder bridges to adjacent connections, fried components and/ or separation of the connecting foil from the circuit board. I can't really tell you how much it would cost to repair (or even if a repair is practical) without looking at the exact problem. If some components are fried or if the foil has separated from the circuit board, it may be necessary to order another PL-380 to correct the problem-- which isn't a very practical solution. Cold solder joints and solder bridges are easy to correct (as long as the original circuit board terminals are intact, and no parts are fried), and the rest of the antenna is fairly straightforward to work on, as long as the recommended parts were used. But before any repair is attempted (or repair cost estimated) a visual inspection is necessary to diagnose the problem.

73, Gary


Re: 3 Inch FSL Tecsun PL-380 Model

Gary DeBock
 

Jerry,

From an eyesight point of view, the most challenging part of that project was to solder the two 250/46 Litz wires onto the two PL-380 circuit board terminals. Possible problems in that process include cold solder joints, solder bridges to adjacent connections, fried components and/ or separation of the connecting foil from the circuit board. I can't really tell you how much it would cost to repair (or even if a repair is practical) without looking at the exact problem. If some components are fried or if the foil has separated from the circuit board, it may be necessary to order another PL-380 to correct the problem-- which isn't a very practical solution. Cold solder joints and solder bridges are easy to correct (as long as the original circuit board terminals are intact, and no parts are fried), and the rest of the antenna is fairly straightforward to work on, as long as the recommended parts were used. But before any repair is attempted (or repair cost estimated) a visual inspection is necessary to diagnose the problem.

73, Gary


Re: 3 Inch FSL Tecsun PL-380 Model

Jerry Rappel <ww0e@...>
 

Thanks Gary,


I believe the 250/46 Litz wire and ferrite bars need to be better aligned, and the

2 wires coming from the circuit board re-soldered.

I have limited vision with Glaucoma, and probably shouldn't have attempted this?


Anyhow, maybe the rewinding of the Litz wire and re adjust the ferrite bars,

and the 2 wires soldered better ?.


What's your fee for this Gary?


Jerry  WW0E






From: "Gary DeBock via Groups.Io" <D1028Gary@...>
To: "main" <main@UltralightDX.groups.io>
Sent: Thursday, June 20, 2019 5:24:12 PM
Subject: Re: [UltralightDX] 3 Inch FSL Tecsun PL-380 Model

Hello Jerry (and Michael),

<<<   A long while ago I attempted the 3 Inch FSL on the Tecsun PL-380.
It needs some adjustments, I'm not a good assembler with my bad eyesight.
Anyone available to correct/redue this for me if I can ship it to you?   >>>

Since I don't know what's the problem I can't really make any promises, Jerry. But if you send it here, I will take a look at it. I don't really have a lot of spare parts for that particular PL-380 modification, though (which was designed 3 years ago).

Gary DeBock
P.O. Box 1313
Puyallup, WA, 98371





Re: 3 Inch FSL Tecsun PL-380 Model

Gary DeBock
 

Hello Jerry (and Michael),

<<<   A long while ago I attempted the 3 Inch FSL on the Tecsun PL-380.
It needs some adjustments, I'm not a good assembler with my bad eyesight.
Anyone available to correct/redue this for me if I can ship it to you?   >>>

Since I don't know what's the problem I can't really make any promises, Jerry. But if you send it here, I will take a look at it. I don't really have a lot of spare parts for that particular PL-380 modification, though (which was designed 3 years ago).

Gary DeBock
P.O. Box 1313
Puyallup, WA, 98371




Re: New Design 3 Inch Baby FSL Antenna Demo Video

Patrick Barthelow
 

Hello Mike, and others. Here is a picture on this sunny day in California of a sample of Variable caps I have, mostly were transmitter type, but many cover the range of 300 or so pf.  Don't know if the different construction, beefier, etc, lend any gain advantages in a MF tuned circuit antenna...


Best, 73,   Pat Barthelow AA6EG
apolloeme@...

"The most exciting phrase to hear in Science, the one that heralds
new discoveries,  is not "Eureka, I have found it!"    but:

"That's funny..."  ----Isaac Asimov 




On Thu, Jun 20, 2019 at 1:33 PM blumu via Groups.Io <blumu=btinternet.com@groups.io> wrote:

Ah, good point, Patrick
Perchance we need to crowdfund an FSL Shipping Line..
Problem : dodgy smugglers might wish to piggyback...

The variable capacitor should be less tricky:-
- any airspaced from an ancient (sic) "wireless set"
- any airspaced from current suppliers - not always cheap...
- avoid extracted cheapos with plastic-film separators
   often "noisy"  and lossy.

Michael UK


On 20/06/2019 21:07, Patrick Barthelow wrote:
> ... Looking for suppliers for the
> russian variety of ferrite, used, including the one of special shape
> that avoids the "sticks of dynamite" visual look, that gives pause to
> shippers
...
> I am very interested in knowing any variable
> capacitor characteristics that assist in maximum signal.
...
> Best, 73,   Pat Barthelow AA6EG

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Re: New Design 3 Inch Baby FSL Antenna Demo Video

Gary DeBock
 

<<<    Hello, Fellow LF/MF DXers!
Amazing Antenna.  I plan to build one.  Looking for suppliers for the russian variety of ferrite, used, including the one of special shape that avoids the "sticks of dynamite" visual look, that gives pause to shippers... Where can I get some of the usable varieties of ferrite? 
There was mention made of the effectiveness of the variable capacitor chosen for this antenna.   I am very interested in knowing any variable capacitor characteristics that assist in maximum signal.    Most  300-400 pF capacitors look very similar.  What sets your selection apart from "garden variety" capacitors in that capacitance range that works especially well in this application?
Best, 73,   Pat Barthelow AA6EG   >>>

Thanks for your comments, Pat!

The Russian surplus 120mm x 8mm ferrite rods are not currently available on eBay, but the 140mm x 8mm ferrite rods (slightly longer) are available at https://www.ebay.com/itm/10-x-Ferrite-Rod-8mm-x-140mm-for-Amateur-Crystal-Radio-Coils-AM-SW/202603024491?_trkparms=ispr%3D1&hash=item2f2c14d06b:g:Hr4AAOSwahlbxh8W&enc=AQADAAAB4KX%2FKt4E1xf3SDqEdBclaYae5GE0ApgtXf%2FvY%2Bfsn2w%2Fd23urPHDpluF6fOh3FaEkQWqlYYeblBWx8QvhqV2lrxg844dE4DKX4baWQClaqnLtCQypsrQtHWB9JuMzbcXBdlxqOQkYIDtL%2BH62SPlmyr2gjp%2BzlxjVHr2v%2BveGLZtil45esF00W9mNa9sWeuZ2iuEmrqs6aaoEeyPDLk4NiKuAdsQLTOiog7ws%2FZJHN7wiA865k5ldKmfvfUbMokKTC8nsQeerxbVK4%2FUrEVqAIyiVcss5fFiccNPwv%2BR8JCee7ZiKAS9KB%2B7%2F7ArlJa9ic%2F5jwGybMBpVe532%2FtEKo9qY2riOis2ybSBdNVS3MkhRmyuhW44Tg2qU0eDNOWSXWILcFsLA8XeC16faEy6IKeJzjEcNv%2FZ2TEE8DTV59JrNun%2F%2BsGh5cCmUuW2VItM9qk%2BRnh0mWinktMy1Jt2EutbcOwYJT%2FpL8rTre8yYzff18qNypxwtibcMlm9HZYC%2B0Z6OOZ8AzByX8sbE%2BFBnh%2BakMMX10sQEdyWqBcLO7VmevZGb4fDH%2F8B4pO7DZ2E3YiLv2%2FtA%2FFKZtl%2BmGt0mJEkE03EmOjuB6K%2FPGpdmNWh%2BJjqnMCSj3TfdRhHFPR6WA%3D%3D&checksum=202603024491f2945396953c4395a9db0fb43d576d48
The 1162/46 Litz wire is available on eBay at the following link  https://www.ebay.com/itm/Litz-wire-1162-46-for-Amateur-Crystal-Radio-coil-Single-layer-insulation-100/151156887668?hash=item2331a71074:g:aT0AAOxyTjNSdFlQ:sc:USPSFirstClass!98371!US!-1
Finally, the compact, high performance "384-P" variable capacitor with the 8:1 planetary drive system is available at http://www.orenelliottproducts.com/oep-capacitors/n-50-group/n50-384p-8-1-drive

73, Gary DeBock (in Puyallup, WA, USA)



Re: New Design 3 Inch Baby FSL Antenna Demo Video

Gary DeBock
 

Thanks Craig and Chris,

Your comments on the 3" Baby FSL video are greatly appreciated!

Of course there is constant tweaking and testing of new FSL designs here, and A/B testing is pretty relentless. Craig, there is already a superior version of the 5" Bar FSL that I shipped to you only a few months back, so I'll be happy to provide you with the latest, improved model in an exchange at the Rockwork cliff in August. Chris, there will also be one of the latest 5" Bar FSL models ready for you at the same time, with the "suitcase-friendly" 4' PVC base parts ready as well (for both of you). At the Rockwork Cliff you both should be able to fine tune your FSL DXing skills on 558-Fiji, 1017-Tonga-- and maybe even Western Oz!

By the time of the Poipu, Kauai DXpedition in November you both should be able to score around the world (when you aren't snorkeling or hiking).

73, Gary

 


Re: New Design 3 Inch Baby FSL Antenna Demo Video

Michael.2E0IHW
 

Ah, good point, Patrick
Perchance we need to crowdfund an FSL Shipping Line..
Problem : dodgy smugglers might wish to piggyback...

The variable capacitor should be less tricky:-
- any airspaced from an ancient (sic) "wireless set"
- any airspaced from current suppliers - not always cheap...
- avoid extracted cheapos with plastic-film separators
often "noisy" and lossy.

Michael UK


On 20/06/2019 21:07, Patrick Barthelow wrote:
... Looking for suppliers for the russian variety of ferrite, used, including the one of special shape that avoids the "sticks of dynamite" visual look, that gives pause to shippers
...
I am very interested in knowing any variable capacitor characteristics that assist in maximum signal.
...
Best, 73,   Pat Barthelow AA6EG
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Re: New Design 3 Inch Baby FSL Antenna Demo Video

Phillip Fimiani
 

I bought two cheaper varieties... Should come in soon. They look alike, but the cheaper one is made from a duller looking aluminum... not stainless or whatever is used on the $40 ones. The materials will make the difference of course, Will it be a major difference in the overall pickup... Don't know... If it improves reception... Ill be happy...

I'm starting with a traditional X framed box antenna... maybe remote controlled possibly amplified... I want to place it a distance away in the attic.
 
Best Regards
Phil
KD2HTN / WA2069SWL
Long: 34.210293 Lat:-78.057048
FM04xf 30dl
______________________________



On Thursday, June 20, 2019, 4:07:46 PM EDT, Patrick Barthelow <apolloeme@...> wrote:


Hello, Fellow LF/MF DXers!
Amazing Antenna.  I plan to build one.  Looking for suppliers for the russian variety of ferrite, used, including the one of special shape that avoids the "sticks of dynamite" visual look, that gives pause to shippers... Where can I get some of the usable varieties of ferrite? 
There was mention made of the effectiveness of the variable capacitor chosen for this antenna.   I am very interested in knowing any variable capacitor characteristics that assist in maximum signal.    Most  300-400 pF capacitors look very similar.  What sets your selection apart from "garden variety" capacitors in that capacitance range that works especially well in this application?
Best, 73,   Pat Barthelow AA6EG
apolloeme@...

"The most exciting phrase to hear in Science, the one that heralds
new discoveries,  is not "Eureka, I have found it!"    but:

"That's funny..."  ----Isaac Asimov 




On Wed, Jun 19, 2019 at 11:54 PM Gary DeBock via Groups.Io <D1028Gary=aol.com@groups.io> wrote:
The new 3 inch (76mm) Baby FSL antenna is the smallest, most compact and lightweight "airport friendly" FSL ever constructed here, but it packs a pretty mean inductive coupling punch due to a newly upgraded "384P" variable capacitor (as well as the most sensitive 1162/46 Litz wire coil).

This afternoon in summer-like daytime DXing conditions a YouTube demonstration video receiving 1070-CFAX in Victoria, BC (10 kW at 99 miles) was recorded, where an S2-S3 fringe signal on a CC Skywave SSB model was boosted up to a S9++ overload level by the Baby FSL, bringing in news of a sudden power failure by BC Hydro on the west shore of Victoria (possibly not related to the FSL's huge signal power boost)  https://www.youtube.com/watch?v=JZtYli09mTg

This new-design Baby FSL antenna will feature prominently in an "innovative ferrite antenna" lecture at the IRCA Convention in September, which will also feature "Supercharged" Ultralights and monster, "airport unfriendly" FSL's. See you there! 

73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)


--
73
Phil
KD2HTN / WA2069SWL
Long: 34.210293 Lat:-78.057048
FM04xf 30dl


Re: New Design 3 Inch Baby FSL Antenna Demo Video

Patrick Barthelow
 

Hello, Fellow LF/MF DXers!
Amazing Antenna.  I plan to build one.  Looking for suppliers for the russian variety of ferrite, used, including the one of special shape that avoids the "sticks of dynamite" visual look, that gives pause to shippers... Where can I get some of the usable varieties of ferrite? 
There was mention made of the effectiveness of the variable capacitor chosen for this antenna.   I am very interested in knowing any variable capacitor characteristics that assist in maximum signal.    Most  300-400 pF capacitors look very similar.  What sets your selection apart from "garden variety" capacitors in that capacitance range that works especially well in this application?
Best, 73,   Pat Barthelow AA6EG
apolloeme@...

"The most exciting phrase to hear in Science, the one that heralds
new discoveries,  is not "Eureka, I have found it!"    but:

"That's funny..."  ----Isaac Asimov 




On Wed, Jun 19, 2019 at 11:54 PM Gary DeBock via Groups.Io <D1028Gary=aol.com@groups.io> wrote:
The new 3 inch (76mm) Baby FSL antenna is the smallest, most compact and lightweight "airport friendly" FSL ever constructed here, but it packs a pretty mean inductive coupling punch due to a newly upgraded "384P" variable capacitor (as well as the most sensitive 1162/46 Litz wire coil).

This afternoon in summer-like daytime DXing conditions a YouTube demonstration video receiving 1070-CFAX in Victoria, BC (10 kW at 99 miles) was recorded, where an S2-S3 fringe signal on a CC Skywave SSB model was boosted up to a S9++ overload level by the Baby FSL, bringing in news of a sudden power failure by BC Hydro on the west shore of Victoria (possibly not related to the FSL's huge signal power boost)  https://www.youtube.com/watch?v=JZtYli09mTg

This new-design Baby FSL antenna will feature prominently in an "innovative ferrite antenna" lecture at the IRCA Convention in September, which will also feature "Supercharged" Ultralights and monster, "airport unfriendly" FSL's. See you there! 

73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)


Re: 3 Inch FSL Tecsun PL-380 Model

Michael.2E0IHW
 

Jerry, I am the wrong side of The Pond, but assume you
will find merry helpers.

The jpg suggests a basic problem which should not
be difficult to resolve.

Gary?

Michael
Left-of-The-Pond


On 20/06/2019 20:21, Jerry Rappel wrote:
A long while ago I attempted the 3 Inch FSL on the Tecsun PL-380.
It needs some adjustments, I'm not a good assembler with my bad eyesight.
Anyone available to correct/redue this for me if I can ship it to you?
Jerry  WWØE
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3 Inch FSL Tecsun PL-380 Model

Jerry Rappel <ww0e@...>
 

A long while ago I attempted the 3 Inch FSL on the Tecsun PL-380.
It needs some adjustments, I'm not a good assembler with my bad eyesight.
Anyone available to correct/redue this for me if I can ship it to you?

Thanks,



Jerry  WWØE


Re: New Design 3 Inch Baby FSL Antenna Demo Video

Chris Black <n1cp@...>
 

Hi Gary, I second all that! This FSL is definitely the fashion accessory that every ultralight DXer must have.
I’ll be at Convention as well.
Best 73 de Chris


On Jun 20, 2019, at 7:38 AM, C B via Groups.Io <bevdxer@...> wrote:

Hi Gary,

Thanks for the great video and for the redesigned "Baby FSL". I can attest to it's usefulness having had the pleasure to have and use an earlier iteration at Kalaloch(my first TSA Friendly FSL)!. Thanks for your ongoing work on significantly enhancing the DX results of Ultralights:-) I will now resume chomping at the bit for a week at Rockworks! BTW, I look forward to your lecture on FSLs at the IRCA Convention, as I will be in attendance.

73,

Craig Barnes
Wheat Ridge, CO




On Thursday, June 20, 2019, 12:54:58 AM MDT, Gary DeBock via Groups.Io <D1028Gary@...> wrote:


The new 3 inch (76mm) Baby FSL antenna is the smallest, most compact and lightweight "airport friendly" FSL ever constructed here, but it packs a pretty mean inductive coupling punch due to a newly upgraded "384P" variable capacitor (as well as the most sensitive 1162/46 Litz wire coil).

This afternoon in summer-like daytime DXing conditions a YouTube demonstration video receiving 1070-CFAX in Victoria, BC (10 kW at 99 miles) was recorded, where an S2-S3 fringe signal on a CC Skywave SSB model was boosted up to a S9++ overload level by the Baby FSL, bringing in news of a sudden power failure by BC Hydro on the west shore of Victoria (possibly not related to the FSL's huge signal power boost)  https://www.youtube.com/watch?v=JZtYli09mTg

This new-design Baby FSL antenna will feature prominently in an "innovative ferrite antenna" lecture at the IRCA Convention in September, which will also feature "Supercharged" Ultralights and monster, "airport unfriendly" FSL's. See you there! 

73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)


Re: New Design 3 Inch Baby FSL Antenna Demo Video

C B
 

Hi Gary,

Thanks for the great video and for the redesigned "Baby FSL". I can attest to it's usefulness having had the pleasure to have and use an earlier iteration at Kalaloch(my first TSA Friendly FSL)!. Thanks for your ongoing work on significantly enhancing the DX results of Ultralights:-) I will now resume chomping at the bit for a week at Rockworks! BTW, I look forward to your lecture on FSLs at the IRCA Convention, as I will be in attendance.

73,

Craig Barnes
Wheat Ridge, CO




On Thursday, June 20, 2019, 12:54:58 AM MDT, Gary DeBock via Groups.Io <D1028Gary@...> wrote:


The new 3 inch (76mm) Baby FSL antenna is the smallest, most compact and lightweight "airport friendly" FSL ever constructed here, but it packs a pretty mean inductive coupling punch due to a newly upgraded "384P" variable capacitor (as well as the most sensitive 1162/46 Litz wire coil).

This afternoon in summer-like daytime DXing conditions a YouTube demonstration video receiving 1070-CFAX in Victoria, BC (10 kW at 99 miles) was recorded, where an S2-S3 fringe signal on a CC Skywave SSB model was boosted up to a S9++ overload level by the Baby FSL, bringing in news of a sudden power failure by BC Hydro on the west shore of Victoria (possibly not related to the FSL's huge signal power boost)  https://www.youtube.com/watch?v=JZtYli09mTg

This new-design Baby FSL antenna will feature prominently in an "innovative ferrite antenna" lecture at the IRCA Convention in September, which will also feature "Supercharged" Ultralights and monster, "airport unfriendly" FSL's. See you there! 

73 and Good DX,
Gary DeBock (in Puyallup, WA, USA)

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