[Lowfer] Litz wire
ALAN MELIA
alan.melia at btinternet.com
Mon Dec 28 18:26:13 EST 2009
Dick, what you were making was more probably scamble-bundled stranded wire NOT true Litz. Litz is bundled in agregates of 3 and is wound so that each strand spends as much length in the centre of the bundle as on the outside. This is essential to keep the optimum performance. Scramble bundled is probably better than solid with the same c/s but it is not quite the same as Litz.
On the topic of efficiency......unless you have your ground loss down to about 10 ohms you are probably wasting time effort and money. Winding a coil in Litz (or insulated bundled) with the same format as solid will probably give you a reduction of about 30% in the RF loss (measured). So if the solid coil loss is 10 ohms you are seeing and overall reduction of 3 ohms in loss. If your total antenna system loss resistance is 120 ohms, as it quite well can be, there are usually other places you can more effective expend your resources for a bigger gain. I think Dave G3YXM did some practical experiments on this on 137kHz and was most disappointed !! If you have everything else optimised and the biggest antenna then some small improvement maybe seen with somthing like 729 strand Litz which is about as thick as a pencil.
Alan G3NYK
--- On Mon, 28/12/09, lowfer-request at mailman.qth.net <lowfer-request at mailman.qth.net> wrote:
> From: lowfer-request at mailman.qth.net <lowfer-request at mailman.qth.net>
> Subject: Lowfer Digest, Vol 58, Issue 32
> To: lowfer at mailman.qth.net
> Date: Monday, 28 December, 2009, 17:00
> Send Lowfer mailing list submissions
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> Today's Topics:
>
> 1. LITZ wire price (Andy - KU4XR)
> 2. Re: LITZ wire price (toddroberts2001 at aol.com)
> 3. Re: LITZ wire price (Andy - KU4XR)
> 4. 185.300 stairsteps? (Dexter McIntyre
> W4DEX)
> 5. re Basket weave coils (ALAN MELIA)
> 6. Evidently coil L/D does matter (Andy -
> KU4XR)
> 7. Re: LITZ wire price (EVP)
> 8. WE2XGR/6 and WD2XSH/6 CW QSO Copied
> near Sacramento (KI7WB)
> 9. multiple ARGS screens (Paul Daulton)
> 10. Re: 600MRG> Why put a coil under the top hat
> ??? (P.E.Hamel)
> 11. Re: LITZ wire price (Dick Cappels)
> 12. XR and CV (n8tl)
> 13. MP capture (rick kirby)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Sun, 27 Dec 2009 12:32:32 -0800 (PST)
> From: Andy - KU4XR <ku4xr at yahoo.com>
> Subject: [Lowfer] LITZ wire price
> To: lowfer at mailman.qth.net
> Message-ID: <384364.94051.qm at web63607.mail.re1.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> Hello All:
>
> I have never purchased LITZ wire before, but have heard
> that
> the price is high. I have found some 20 strand - 40 guage,
> unserved LITZ that is 9 cents per foot. Is this a good
> price?
> Thanks for your input;
>
> 73 :::
>
>
> Andy - KU4XR - EM75xr - Friendsville, TN.
> LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
> Coordinates: N: 35* 43' 54" - W: 84* 3'
> 16"
> http://www.myspace.com/beaconxr
> http://webpages.charter.net/ku4xr/
> *** http://webpages.charter.net/ku4xr/the%20death%20of%20ie-6.jpg ***
> **** http://webpages.charter.net/ku4xr/You%20Tube%20Notice.jpg
> ****
>
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Sun, 27 Dec 2009 16:29:57 EST
> From: toddroberts2001 at aol.com
> Subject: Re: [Lowfer] LITZ wire price
> To: lowfer at mailman.qth.net
> Message-ID: <5cdb.7d70e1f0.38692bd5 at aol.com>
> Content-Type: text/plain; charset="US-ASCII"
>
>
>
> In a message dated 12/27/2009 3:32:41 P.M. Eastern Standard
> Time,
> ku4xr at yahoo.com
> writes:
>
> Hello All:
>
> I have never purchased LITZ wire before, but have
> heard that
> the price is high. I have found some 20 strand - 40 guage,
> unserved LITZ that is 9 cents per foot. Is this a
> good price?
> Thanks for your input;
>
> 73 :::
>
>
>
> Hi Andy,
> You didn't give any information on what frequency you plan
> to use the wire
> on
> or whether you plan to use it for transmitting or
> receiving?
>
> I assume you want to use the wire in the Lowfer band? #40
> AWG stranded Litz
> is
> correct for the 100-200KHz frequency range.
>
> 20 strands of #40 gauge wire = 20/40 Litz wire is awfully
> small wire,
> equivalent to about #27 gauge round wire. This would only
> be good for receiving
> use and probably small even for a loop
> antenna.
>
> For transmitting use you would want something heavier like
> 270 strands of
> #40 gauge wire = 270/40 Litz wire. This would be equivalent
> to #16 gauge
> round wire
> and would build a reasonable size loading coil of low RF
> resistance.
>
> 73 - Todd WD4NGG
>
>
> ------------------------------
>
> Message: 3
> Date: Sun, 27 Dec 2009 15:10:08 -0800 (PST)
> From: Andy - KU4XR <ku4xr at yahoo.com>
> Subject: Re: [Lowfer] LITZ wire price
> To: " European & UK\) and MedFer bandsDiscussion of the
> Lowfer \(US"
> <lowfer at mailman.qth.net>
> Message-ID: <782327.57074.qm at web63605.mail.re1.yahoo.com>
> Content-Type: text/plain; charset=iso-8859-1
>
> Thankd Todd:
>
> You are correct, I was planning to wind an extra loading
> coil
> for my lowfer beacon. I am currently using insulated 30
> guage
> wire wound on a paint bucket, and a plastic coffee can and
> so
> far I haven't experienced any coil warmth at all. But.
> it's
> only 1 watt at 185 KHz. So if the 20/40 LITZ would be the
> equivalent of #27, then I would be going to a larger wire
> than I'm using now, and probably at a lower resistance.
> The resistance of the current setup is 5.4 Ohms for a
> total
> of 2.51 Milli-Henries ( measurements include the LP Filter
> ).
> I didn't think the amperage would be a problem at this
> power level though.
>
> 73 to you :::
>
>
> Andy - KU4XR - EM75xr - Friendsville, TN.
> LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
> Coordinates: N: 35* 43' 54" - W: 84* 3'
> 16"
> http://www.myspace.com/beaconxr
> http://webpages.charter.net/ku4xr/
> *** http://webpages.charter.net/ku4xr/the%20death%20of%20ie-6.jpg ***
> **** http://webpages.charter.net/ku4xr/You%20Tube%20Notice.jpg
> ****
>
>
> --- On Sun, 12/27/09, toddroberts2001 at aol.com
> <toddroberts2001 at aol.com>
> wrote:
>
> > From: toddroberts2001 at aol.com
> <toddroberts2001 at aol.com>
> > Subject: Re: [Lowfer] LITZ wire price
> > To: lowfer at mailman.qth.net
> > Date: Sunday, December 27, 2009, 4:29 PM
> >
> >
> >
> > Hi Andy,
> > You didn't give any information on what frequency you
> plan
> > to use the wire?
> > on
> > or whether you plan to use it for transmitting or
> > receiving?
> >
> > I assume you want to use the wire in the Lowfer band?
> #40
> > AWG stranded Litz
> > is
> > correct for the 100-200KHz frequency range.
> >
> > 20 strands of #40 gauge wire = 20/40 Litz wire is
> awfully
> > small wire,?
> > equivalent to about #27 gauge round wire. This would
> only
> > be good for receiving?
> > use and probably small even for a loop
> > antenna.
> >
> > For transmitting use you would want something heavier
> like
> > 270 strands? of
> > #40 gauge wire = 270/40 Litz wire. This would be
> equivalent
> > to #16? gauge
> > round wire
> > and would build a reasonable size loading coil of low
> RF
> > resistance.
> >
> > 73 - Todd WD4NGG
>
>
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Sun, 27 Dec 2009 18:11:17 -0500
> From: Dexter McIntyre W4DEX <dmcintyre at att.net>
> Subject: [Lowfer] 185.300 stairsteps?
> To: "Discussion of the Lowfer \(US, European,
> & UK\) and MedFer
> bands" <lowfer at mailman.qth.net>
> Message-ID: <4B37E995.30806 at att.net>
> Content-Type: text/plain; charset=ISO-8859-1;
> format=flowed
>
> While looking for XR today I saw stair steps on 185.300 +/-
> 15 for so Hz. Still
> seeing the signal after sunset. I suspect something
> local but found it odd that
> it's only showing up on this frequency.
>
> http://www.w4dex.com/lf/lowfer/captures/xr/stairsteps.jpg
>
> Dex
>
>
> ------------------------------
>
> Message: 5
> Date: Sun, 27 Dec 2009 23:37:50 +0000 (GMT)
> From: ALAN MELIA <alan.melia at btinternet.com>
> Subject: [Lowfer] re Basket weave coils
> To: lowfer at mailman.qth.net
> Message-ID: <806681.53875.qm at web86501.mail.ird.yahoo.com>
> Content-Type: text/plain; charset=utf-8
>
> Hi JB and very good they are too!! The think is that you
> can get many turns into a a very short coild "length" then
> it you use two moveable "pies" you gat a nice tunable coil.
> There should be a pic of a simple one for TX on my site
> using clematis net and plant stakes as the radials, all you
> have to remember is to have an odd number of radials or
> spokes.
>
> I wouldnt try flying one as a top load unless you have a
> very well behaved climate with mild winds, otherwise like
> the spiral they put a lot of wind load on the top.
>
> It was great fun to resurect 1920s coil formats again (and
> learn some electronics in the process !!)
>
> Have a Good New Year
>
> Alan G3NYK
>
>
>
> ------------------------------
>
> Message: 6
> Date: Sun, 27 Dec 2009 17:30:30 -0800 (PST)
> From: Andy - KU4XR <ku4xr at yahoo.com>
> Subject: [Lowfer] Evidently coil L/D does matter
> To: lowfer at mailman.qth.net
> Message-ID: <485552.16240.qm at web63604.mail.re1.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> Hi everyone:
>
> After redoing my antenna in Nov. and adding more tophat,
> the
> Inductance needed went down. I had planned to unwind some
> of
> the fixed coil to bring the tuning back to the MAX
> Inductance
> position on the Variometer. I kept putting it off, and
> since
> I've started reading about coil L/D ratios, I saw that
> mine
> was way out of proportion. I also read that the Variable
> coil
> should add only a small amount of Inductance for peak
> performance of the variometer. I had almost 1 Milli-Henry
> on
> the vari-coil, and about 1.30 mH on the fixed coil ( bucket
> ).
> I unwound the vari-coil to a value of 370 uH, and added
> the
> windings to the paint bucket to a value of 2.14 mH.
> The bucket / fixed winding is 10" diameter, and the Length
> of
> the fixed coil is 2". If I uderstand the calculation
> right,
> 2/10 = .2 :: I think that is in the good range.
> Anyway, I
> turned the beacon back on and re-tuned, and the changes
> resulted in a 10 mAmp increase in RF current at 1 Watt.
> I am now at 195 mAmps on a 200 mAmp meter. It has never
> been
> this high before. I am definitely happy with the results
> of todays work.
> I am still trying to decide if putting a fixed coil in the
>
> vertical radiator about 4' above the roof level of the
> trailer
> might help to further reduce capacitive losses from the
> verticals proximity to the aluminum siding of the trailer
> home.
> It may be one of those; I'll just have to try it and see if
> it
> helps or not.
>
> Well 73 to everyone for now :::
>
>
> Andy - KU4XR - EM75xr - Friendsville, TN.
> LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
> Coordinates: N: 35* 43' 54" - W: 84* 3'
> 16"
> http://www.myspace.com/beaconxr
> http://webpages.charter.net/ku4xr/
> *** http://webpages.charter.net/ku4xr/the%20death%20of%20ie-6.jpg ***
> **** http://webpages.charter.net/ku4xr/You%20Tube%20Notice.jpg
> ****
>
>
>
>
>
> ------------------------------
>
> Message: 7
> Date: Sun, 27 Dec 2009 18:04:09 -0800
> From: EVP <evp at pacbell.net>
> Subject: Re: [Lowfer] LITZ wire price
> To: "Discussion of the Lowfer \(US, European,
> & UK\) and MedFer
> bands" <lowfer at mailman.qth.net>
> Message-ID: <4B381219.20809 at pacbell.net>
> Content-Type: text/plain; charset=us-ascii; format=flowed
>
> Unless you have a really good ground inn my
> opinion you'd be better
> off using large plain magnet wire. Cheaper and easier.
>
> Ed
>
> Andy - KU4XR wrote:
>
> >Thankd Todd:
> >
> >You are correct, I was planning to wind an extra
> loading coil
> >for my lowfer beacon. I am currently using insulated 30
> guage
> >wire wound on a paint bucket, and a plastic coffee can
> and so
> >far I haven't experienced any coil warmth at all. But.
> it's
> >only 1 watt at 185 KHz. So if the 20/40 LITZ would be
> the
> >equivalent of #27, then I would be going to a larger
> wire
> >than I'm using now, and probably at a lower resistance.
>
> >The resistance of the current setup is 5.4 Ohms for a
> total
> >of 2.51 Milli-Henries ( measurements include the LP
> Filter ).
> >I didn't think the amperage would be a problem at this
> >power level though.
> >
> >73 to you :::
> >
> >
> >Andy - KU4XR - EM75xr - Friendsville, TN.
> >LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
> >Coordinates: N: 35* 43' 54" - W: 84*
> 3' 16"
> >http://www.myspace.com/beaconxr
> >http://webpages.charter.net/ku4xr/
> >*** http://webpages.charter.net/ku4xr/the%20death%20of%20ie-6.jpg ***
> >**** http://webpages.charter.net/ku4xr/You%20Tube%20Notice.jpg
> ****
> >
> >
> >--- On Sun, 12/27/09, toddroberts2001 at aol.com
> <toddroberts2001 at aol.com>
> wrote:
> >
> >
> >
> >>From: toddroberts2001 at aol.com
> <toddroberts2001 at aol.com>
> >>Subject: Re: [Lowfer] LITZ wire price
> >>To: lowfer at mailman.qth.net
> >>Date: Sunday, December 27, 2009, 4:29 PM
> >>
> >>
> >>
> >>Hi Andy,
> >>You didn't give any information on what frequency
> you plan
> >>to use the wire
> >>on
> >>or whether you plan to use it for transmitting or
> >>receiving?
> >>
> >>I assume you want to use the wire in the Lowfer
> band? #40
> >>AWG stranded Litz
> >> is
> >>correct for the 100-200KHz frequency range.
> >>
> >>20 strands of #40 gauge wire = 20/40 Litz wire is
> awfully
> >>small wire,
> >>equivalent to about #27 gauge round wire. This
> would only
> >>be good for receiving
> >>use and probably small even for a loop
> >>antenna.
> >>
> >>For transmitting use you would want something
> heavier like
> >>270 strands of
> >>#40 gauge wire = 270/40 Litz wire. This would be
> equivalent
> >>to #16 gauge
> >>round wire
> >>and would build a reasonable size loading coil of
> low RF
> >>resistance.
> >>
> >>73 - Todd WD4NGG
> >>
> >>
> >
> >
> >
> >
> >______________________________________________________________
> >Lowfer mailing list
> >Home: http://mailman.qth.net/mailman/listinfo/lowfer
> >Help: http://mailman.qth.net/mmfaq.htm
> >Post: mailto:Lowfer at mailman.qth.net
> >
> >This list hosted by: http://www.qsl.net
> >Please help support this email list: http://www.qsl.net/donate.html
> >
> >
> >
> >
>
>
>
> ------------------------------
>
> Message: 8
> Date: Sun, 27 Dec 2009 19:24:06 -0800
> From: "KI7WB" <ki7wb at sbcglobal.net>
> Subject: [Lowfer] WE2XGR/6 and WD2XSH/6 CW QSO Copied near
> Sacramento
> To: <lowfer at mailman.qth.net>
> Message-ID: <8D66ACD181F743D29BD8166D3F705E9C at 100A>
> Content-Type: text/plain;
> charset="iso-8859-1"
>
> I was tuning the 500 kHz band tonight and
> copied WE2XGR/6 and WD2XSH/6 come up in a QSO on about 508.1
> kHz at 1900L Pacific time. They sent 579 and 559 to
> each other at about 1902L Pacific time. Signals were
> up and down with WE2XGR/6 being received here 419, with
> WD2XGR/6 being lounder at 529 at best. Propagation was
> slowly fading up and down with both signal fading into the
> noise at times.
>
> I was using a 1500' beverage wire running
> east and a Yaesu FT1000MP. It was nice to hear a QSO
> in-progress on the 500 kc band!
>
> 73s,
> Ed, KI7WB
> Eldorado Hills, Ca
>
> ------------------------------
>
> Message: 9
> Date: Mon, 28 Dec 2009 04:09:01 GMT
> From: "Paul Daulton" <k5wms at centurytel.net>
> Subject: [Lowfer] multiple ARGS screens
> To: lowfer at mailman.qth.net
> Message-ID: <20091227230900.iv6tpqv7deogw4wk at webmail2.centurytel.net>
> Content-Type: text/plain; charset=UTF-8
>
> Just a reminder that one can use multiple argo screens. SIW
> is close enough to the watering hole that he falls in the
> bandpass so I have set captures on both 185300khz and
> 185185khz center freq.
>
> Anyone else try that?
> Paul Daulton K5WMS
> beacon WMS 187.492 khz qrss30/slow 24/7
> Jacksonville,Ar 72076
> em34wu
>
>
> ------------------------------
>
> Message: 10
> Date: Thu, 24 Dec 2009 20:20:10 -0600
> From: "P.E.Hamel" <pehamel at cableone.net>
> Subject: Re: [Lowfer] 600MRG> Why put a coil under the
> top hat ???
> To: "Andy - KU4XR" <ku4xr at Yahoo.com>,
> <lowfer at mailman.qth.net>,
> "600
> meter group" <SHMRG at piobaire.mines.uidaho.edu>
> Message-ID:
> <CB5C5B8C47AE495CABF92BD6E89D4F53 at radiocomputer>
> Content-Type: text/plain; format=flowed;
> charset="iso-8859-1";
> reply-type=original
>
> Andy and all,
> First Merry and Blessed Christmas wishes to you all.
>
> My justification for putting the loading coil right under
> the top hat is the
> belief that H-Field radiation should be stretched out as
> high as possible to
> maximise the radiated power.
> The top hat voltage (E-Field) will be the same in any
> case.
>
> But my top hat is five feet wide and about 120 feet long.
> (Across the back
> of my lot).
> With family and Christmas, I don't have time to dig out the
> book for exact
> measurements, but what I did was to take my 60 cycle
> capacitor checker and
> measure the indicated capacity between the eleven wire top
> hat and unloaded
> downlead to ground (My original 160 meter antenna).
> I took that capacity and figured the reactance necessary to
> resonate at 507
> KC.
> I then played with a spreadsheet to give me the best "Q"
> coil shape.
> I even tried to make a spiral coil five feet across (big
> mistake).
>
> I decided not to make the coil support the weight of the
> uplead, just run
> weed-eater-line from the ends of the spreader to a point
> below the coil.
> The weight of the 18 wire-uplead on the weed-eater line is
> enough to keep
> the top flat.
> With brass bolts and left-over "white-board" I wound the
> flowerpot coil.
> Two plastic flowerpots and number 10 house wire was heavy,
> so I found a
> cardboard barrel and laid one layer of fiberglass cloth up
> on it.
> When the epoxy was cured, water loosened the cardboard.
> I used the copper tape because another local experimenter
> had used it
> successfully.
> I added two extra turns (just in case) and gave it a coat
> of green paint.
> With good pulleys up and down, I removed turns and found
> resonance.
> With our expansion, I had to add a roller coil in the
> tuning box to get to
> 495KC.
>
> The 600 meter coil makes a good RF choke to 160 and 80
> meters.
> The resonant point is just above the 80 meter band.
> I have relays in the tuning box to switch over to 80 meters
> for the state
> traffic nets.
>
> On my lot, with almost all radials going southeast, I think
> this is the best
> I can do.
>
> Does anyone know any DX'er in West Africa ?
> If the idea that the direction the radials point helps the
> signal is right,
> I should have a good signal there.
> Again, Merry Christmas and good signals.
> Pat W5THT & WD2XSH/6
>
> ---- Original Message -----
> From: "Andy - KU4XR" <ku4xr at Yahoo.com>
> To: <lowfer at mailman.qth.net>;
> "600 meter group"
> <SHMRG at piobaire.mines.uidaho.edu>
> Sent: Thursday, December 24, 2009 2:11 PM
> Subject: 600MRG> Why put a coil under the top hat ???
>
>
> > Greetings all:
> >
> > A few things I have learned over time; What works for
> one; may
> > not work for another, Theory is just that, it works on
> paper,
> > but not always in the real world as it did on the
> paper.
> > *** AND !! ***
> Don't argue with sucess !!
> >
> > Thus my question.
> >
> > For Base applications only, what is the benefit of
> putting a
> > coil directly underneath a top hat ??
> > What value should the coil be in reference to the
> Inductance
> > needed for resonance ( a known value ), and still have
> a
> > tunable coil at the bottom for changes in the
> antenna due
> > to weather and such ??
> > Weight considerations and wind load; how should the
> coil be
> > constructed ?? ie; what form material, wire size,
> etc.
> > Is there an optimum placement in the vertical radiator
> line ??
> > such as 1/3rd up, 1/2 , 3/4ths , or right at the top
> hat ??
> > **** Where can I read up on this ?
> good information,
> > multiple websites will have multiple answers and
> opinions.
> > I would like some good solid information on the
> topic.
> >
> > Thank for replies, and Merry Christmas to everyone ::
> >
> >
> >
> > Andy - KU4XR - EM75xr - Friendsville, TN.
> > LOWfer Beacon " XR " @ 185.29866 KHz ( QRSS-60 )
> > Coordinates: N: 35* 43' 54" - W: 84*
> 3' 16"
> > http://www.myspace.com/beaconxr
> > http://webpages.charter.net/ku4xr/
> >
> >
> >
> >
> >
> > *********** The Primary 600MRG E-mail List Website is:
> **********
> > ******************* http://www.500kc.com/
> ***********************
> > ******* Secondary is: http://www.mines.uidaho.edu/~shmrg/ *******
> > *** Send subscribe and unsubscribe requests to this
> address: ****
> > ************** majordomo at piobaire.mines.uidaho.edu
> **************
> >
> >
> >
> >
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> ------------------------------
>
> Message: 11
> Date: Mon, 28 Dec 2009 20:31:40 +0700
> From: Dick Cappels <loweferletter at cappels.org>
> Subject: Re: [Lowfer] LITZ wire price
> To: "Discussion of the Lowfer (US, European, & UK)
> and MedFer
> bands" <lowfer at mailman.qth.net>
> Message-ID: <C75EC62C.15F70%loweferletter at cappels.org>
> Content-Type: text/plain;
> charset="US-ASCII"
>
> That price sounds very high. Did they think you wanted the
> Platinum Litz
> wire? :-)
>
> When I used to wind my own prototype high frequency
> transformers for a
> living, I made my own Litz wire by running wire several
> times between two
> points -for example, wrapping them between two roof support
> poles spaced
> about 20 feet apart on a factory floor, by just walking
> around the posts
> paying out fine enameled magnet wire, getting two
> strands per round trip,
> then cutting down the bunch of wires at one end and tying
> it to a hook in
> the chuck of an electric drill (the hook being made of a
> metal clothes
> hanger or large guage copper wire) and holding the trigger
> down until I got
> about the number of twists per turn that I thought I
> needed.
>
> I came out a little better if somebody -a technician at
> work, or my daughter
> when at home, held the wires at the far end of the drill
> and helped keep the
> tension constant.
>
> I think the longest piece of wire I made this way was
> somewhere between 60
> and 90 feet. That's a lot of walking. You could make it
> longer, but as
> length increases, tension while twisting becomes
> increasingly critical in
> order to keep the twisted wire smooth and unbroken at the
> same time.
>
> It was great to be able to make whatever size Lits wire
> whenever I needed
> it, not having order it or to keep an inventory. The
> drawbacks to DIY Litz
> wire this way is that its twisted to hold it in shape
> instead of having a
> serving (the wrapping over the wire) this means that there
> is a little more
> resistance per unit length and a little less copper per
> square cm than the
> nearly equivalent Lits wire would have.
>
> Happy New Year to all.
>
> On 12/28/09 4:29 AM, toddroberts2001 at aol.com
> at toddroberts2001 at aol.com
> wrote:
>
> >
> >
> > In a message dated 12/27/2009 3:32:41 P.M. Eastern
> Standard Time,
> > ku4xr at yahoo.com
> writes:
> >
> > Hello All:
> >
> > I have never purchased LITZ wire before, but have
> heard that
> > the price is high. I have found some 20 strand - 40
> guage,
> > unserved LITZ that is 9 cents per foot. Is this
> a good price?
> > Thanks for your input;
> >
> > 73 :::
> >
>
>
>
>
> ------------------------------
>
> Message: 12
> Date: Mon, 28 Dec 2009 13:52:21 -0000
> From: "n8tl" <n8tl at woh.rr.com>
> Subject: [Lowfer] XR and CV
> To: <lowfer at mailman.qth.net>
> Message-ID:
> <001501ca87c4$fa6a9830$6801a8c0 at deefault>
> Content-Type: text/plain;
> charset="iso-8859-1"
>
> Andy:
>
> Looks like your improvements have paid off. I captured XR
> and CV from about 0200 and this morning at 0800 UTC. This is
> the
> first capture of XR this season....my loop is fixed
> east-west and you are normal to the loop which normally
> prevents me from
> copying your signal.
>
> I will post later today at: http://n8tl.wwqth.com/N8TL_LowFer.html
>
> Happy New Year to all,
>
> Tom N8TL
>
>
>
> ------------------------------
>
> Message: 13
> Date: Mon, 28 Dec 2009 10:31:01 -0500
> From: "rick kirby" <theumpire at verizon.net>
> Subject: [Lowfer] MP capture
> To: "Discussion of the Lowfer \(US, European,
> & UK\) and MedFer
> bands" <lowfer at mailman.qth.net>
> Message-ID:
> <DBD8EE2316EE426C8C1C9DC0A692C242 at RADIOROOM>
> Content-Type: text/plain; charset="iso-8859-1"
>
> MP was solid into PA night. Trying out my new 200
> square loop.I was expecting to see a few more signals.
>
> http://captures.ka2pbo.com/MP%2012-28-09.jpg
>
>
>
>
> Rick
>
> KA2PBO
>
> "PBO" 187.2 Khz QRSS 60
> -------------- next part --------------
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> Release Date: 12/28/09 07:16:00
>
> ------------------------------
>
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>
> End of Lowfer Digest, Vol 58, Issue 32
> **************************************
>
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