Topband: Topband Digest, Vol 136, Issue 21

Rune Øye runeegil at hotmail.com
Mon Apr 28 14:55:59 EDT 2014


Hi All,

Thanks for all info regarding my 1000 feet feeder.
Well
 some people mentioned 2 dB loss is not so much. Personally i am agree on
 what ON4UN says in his book. 0.5 here and another 0.5 ++++ and then you
 are suddenly up to 2-4 dB total loss.
Not sure how much power 75 ohm CATV cable can handle, running her Acom 2000A amplifier so plenty of horse power.
I
 will check what is available of 75 ohm CATV cable, but i feel that using 
parallel feeder is a good option for me if i need around 800-1000 feet of
 feeder.
Thanks again for all help, hope this is up and running to the upcoming winter.

73 Rune LA7THA 

 

> From: topband-request at contesting.com
> Subject: Topband Digest, Vol 136, Issue 21
> To: topband at contesting.com
> Date: Sun, 27 Apr 2014 12:00:08 -0400
> 
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> 
> Today's Topics:
> 
>    1. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line.
>       (Richard (Rick) Karlquist)
>    2. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line. (Carl)
>    3. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line.
>       (Richard (Rick) Karlquist)
>    4. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line. (Carl)
>    5. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line. (Charlie)
>    6. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line.
>       (Grant Saviers)
>    7. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line.
>       (Mike Waters)
>    8. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line.
>       (Jim Brown)
>    9. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line.
>       (Mike Waters)
>   10. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line. (k1fz)
>   11. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line.
>       (Jim Brown)
>   12. 1000 ft Hardline (Bill & Liz)
>   13. Re: 1000 feet 5/8" hardline or 600ohm True Ladder line. (Carl)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sat, 26 Apr 2014 09:10:33 -0700
> From: "Richard (Rick) Karlquist" <richard at karlquist.com>
> To: Rune ?ye <runeegil at hotmail.com>,	"topband at contesting.com"
> 	<topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <535BDA79.3050909 at karlquist.com>
> Content-Type: text/plain; charset=windows-1252; format=flowed
> 
> I used to have a 1000 foot long open wire line using
> 4AWG stranded insulated aluminum wire with an impedance of
> 450 ohms.  At the time, the wire cost $0.15 per foot.
> I think 4AWG was the smallest size available in aluminum.
> It is much easier to build a transformer
> for 450 ohms than 600 ohms, because 450/50 = 9 is
> a perfect square.  The spacing is something like 12.5
> cm.  It is supported every 15 meters with a support that
> spaces the wires apart by 12.5 cm.  There are no intermediate
> spreaders.  Originally, I had some intermediate spreaders but
> found them to be unnecessary.  At each end there is a 50 ohm unbalanced 
> to 50 ohm balanced transformer in cascade with a 50 ohm
> balanced to 450 ohm balanced transformer.  The supports
> are PVC pipe slipped over "T-posts" (used for fences).
> I see that the web site you mentioned shows this same
> technique.  Maybe they copied me, hi.
> It is easily deployed/redeployed.  The end to end loss
> including the transformers is a few tenths of a dB on
> 160 meters.
> 
> I moved the shack closer to the antenna and shortened the
> line to 600 feet.  The line has served me well for over
> 10 years now.  There are some photos of the line on my
> web site www.n6rk.com.
> 
> Rick N6RK
> 
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Sat, 26 Apr 2014 12:17:18 -0400
> From: "Carl" <km1h at jeremy.mv.com>
> To: "Richard \(Rick\) Karlquist" <richard at karlquist.com>, Rune ?ye
> 	<runeegil at hotmail.com>,	<topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <8982E2306F6C464A8318E5D471EBF3A4 at computer1>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=response
> 
> Shouldnt that line be rotated along its length to maintain balance as done 
> with OWL Beverages?
> 
> Carl
> KM1H
> 
> ----- Original Message ----- 
> From: "Richard (Rick) Karlquist" <richard at karlquist.com>
> To: "Rune ?ye" <runeegil at hotmail.com>; <topband at contesting.com>
> Sent: Saturday, April 26, 2014 12:10 PM
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder line.
> 
> 
> >I used to have a 1000 foot long open wire line using
> > 4AWG stranded insulated aluminum wire with an impedance of
> > 450 ohms.  At the time, the wire cost $0.15 per foot.
> > I think 4AWG was the smallest size available in aluminum.
> > It is much easier to build a transformer
> > for 450 ohms than 600 ohms, because 450/50 = 9 is
> > a perfect square.  The spacing is something like 12.5
> > cm.  It is supported every 15 meters with a support that
> > spaces the wires apart by 12.5 cm.  There are no intermediate
> > spreaders.  Originally, I had some intermediate spreaders but
> > found them to be unnecessary.  At each end there is a 50 ohm unbalanced to 
> > 50 ohm balanced transformer in cascade with a 50 ohm
> > balanced to 450 ohm balanced transformer.  The supports
> > are PVC pipe slipped over "T-posts" (used for fences).
> > I see that the web site you mentioned shows this same
> > technique.  Maybe they copied me, hi.
> > It is easily deployed/redeployed.  The end to end loss
> > including the transformers is a few tenths of a dB on
> > 160 meters.
> >
> > I moved the shack closer to the antenna and shortened the
> > line to 600 feet.  The line has served me well for over
> > 10 years now.  There are some photos of the line on my
> > web site www.n6rk.com.
> >
> > Rick N6RK
> >
> > _________________
> > Topband Reflector Archives - http://www.contesting.com/_topband
> >
> >
> > -----
> > No virus found in this message.
> > Checked by AVG - www.avg.com
> > Version: 2014.0.4570 / Virus Database: 3920/7399 - Release Date: 04/26/14
> > 
> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Sat, 26 Apr 2014 09:42:59 -0700
> From: "Richard (Rick) Karlquist" <richard at karlquist.com>
> To: Carl <km1h at jeremy.mv.com>, Rune ?ye 	<runeegil at hotmail.com>,
> 	topband at contesting.com
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <535BE213.8070403 at karlquist.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> On 4/26/2014 9:17 AM, Carl wrote:
> > Shouldnt that line be rotated along its length to maintain balance as
> > done with OWL Beverages?
> >
> > Carl
> > KM1H
> >
> 
> A big vertical is omni directional and has high signal levels.
> This is in contrast to the beverage which has low signal levels
> and tries to null out certain directions.  If I disconnect the
> vertical from the line, the noise level drops many S units,
> indicating negligible ingress due to line leakage.
> 
> Rick N6RK
> 
> 
> ------------------------------
> 
> Message: 4
> Date: Sat, 26 Apr 2014 13:23:17 -0400
> From: "Carl" <km1h at jeremy.mv.com>
> To: "Richard \(Rick\) Karlquist" <richard at karlquist.com>, Rune ?ye
> 	<runeegil at hotmail.com>,	<topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <3D29C153DC584503B193CA07B291F6E5 at computer1>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=response
> 
> 
> 
> > On 4/26/2014 9:17 AM, Carl wrote:
> >> Shouldnt that line be rotated along its length to maintain balance as
> >> done with OWL Beverages?
> >>
> >> Carl
> >> KM1H
> >>
> > 
> > A big vertical is omni directional and has high signal levels.
> > This is in contrast to the beverage which has low signal levels
> > and tries to null out certain directions.  If I disconnect the
> > vertical from the line, the noise level drops many S units,
> > indicating negligible ingress due to line leakage.
> > 
> > Rick N6RK
> 
> 
>  What about a 4 square?
> 
> Carl
> 
> 
> 
> 
> ------------------------------
> 
> Message: 5
> Date: Sat, 26 Apr 2014 20:31:16 -0400
> From: "Charlie" <charlie-cunningham at nc.rr.com>
> To: "'Richard \(Rick\) Karlquist'" <richard at karlquist.com>,	"'Carl'"
> 	<km1h at jeremy.mv.com>, 'Rune ?ye' <runeegil at hotmail.com>,
> 	<topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID:
> 	<!&!AAAAAAAAAAAYAAAAAAAAAF0xXac1rOhFkn7GlcEWNIjCgAAAEAAAACWJM6zd2WdMhBqL3ccUIeMBAAAAAA==@nc.rr.com>
> 	
> Content-Type: text/plain;	charset="iso-8859-1"
> 
> ??
> 
> -----Original Message-----
> From: Topband [mailto:topband-bounces at contesting.com] On Behalf Of Richard
> (Rick) Karlquist
> Sent: Saturday, April 26, 2014 12:43 PM
> To: Carl; Rune ?ye; topband at contesting.com
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder line.
> 
> On 4/26/2014 9:17 AM, Carl wrote:
> > Shouldnt that line be rotated along its length to maintain balance as 
> > done with OWL Beverages?
> >
> > Carl
> > KM1H
> >
> 
> A big vertical is omni directional and has high signal levels.
> This is in contrast to the beverage which has low signal levels and tries to
> null out certain directions.  If I disconnect the vertical from the line,
> the noise level drops many S units, indicating negligible ingress due to
> line leakage.
> 
> Rick N6RK
> _________________
> Topband Reflector Archives - http://www.contesting.com/_topband
> 
> 
> ---
> This email is free from viruses and malware because avast! Antivirus protection is active.
> http://www.avast.com
> 
> 
> 
> ------------------------------
> 
> Message: 6
> Date: Sat, 26 Apr 2014 17:36:42 -0700
> From: Grant Saviers <grants2 at pacbell.net>
> To: "Richard (Rick) Karlquist" <richard at karlquist.com>,  Rune ?ye
> 	<runeegil at hotmail.com>,	"topband at contesting.com"
> 	<topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <535C511A.5030600 at pacbell.net>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> I use 9 gauge Al electric fencing wire for elevated radials among my 
> trees.  It is pretty tough stuff, as 3" branches have fallen on it 
> without anything but a little stretch.  it doesn't stretch much with 
> time either.  Now 7.5 cents per foot on Amazon 
> http://www.amazon.com/Field-Guardian-9-Guage-Aluminum-1000-Feet/dp/B00442G21G/ref=sr_1_1?ie=UTF8&qid=1398558684&sr=8-1&keywords=aluminum+fence+wire+9
> 
> This is the largest size I have found, but would make pretty good open 
> wire feeder.
> 
> Grant
> 
> KZ1W
> On 4/26/2014 9:10 AM, Richard (Rick) Karlquist wrote:
> > I used to have a 1000 foot long open wire line using
> > 4AWG stranded insulated aluminum wire with an impedance of
> > 450 ohms.  At the time, the wire cost $0.15 per foot.
> > I think 4AWG was the smallest size available in aluminum.
> > It is much easier to build a transformer
> > for 450 ohms than 600 ohms, because 450/50 = 9 is
> > a perfect square.  The spacing is something like 12.5
> > cm.  It is supported every 15 meters with a support that
> > spaces the wires apart by 12.5 cm.  There are no intermediate
> > spreaders.  Originally, I had some intermediate spreaders but
> > found them to be unnecessary.  At each end there is a 50 ohm 
> > unbalanced to 50 ohm balanced transformer in cascade with a 50 ohm
> > balanced to 450 ohm balanced transformer.  The supports
> > are PVC pipe slipped over "T-posts" (used for fences).
> > I see that the web site you mentioned shows this same
> > technique.  Maybe they copied me, hi.
> > It is easily deployed/redeployed.  The end to end loss
> > including the transformers is a few tenths of a dB on
> > 160 meters.
> >
> > I moved the shack closer to the antenna and shortened the
> > line to 600 feet.  The line has served me well for over
> > 10 years now.  There are some photos of the line on my
> > web site www.n6rk.com.
> >
> > Rick N6RK
> >
> > _________________
> > Topband Reflector Archives - http://www.contesting.com/_topband
> >
> 
> 
> 
> ------------------------------
> 
> Message: 7
> Date: Sat, 26 Apr 2014 20:17:05 -0500
> From: Mike Waters <mikewate at gmail.com>
> To: topband <topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID:
> 	<CA+FxYXi=UTyy=DuQpTXAu4T1nWMr_MNobK79a4SMoyERsURjXw at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
> 
> Hardline for 160 meters?
> 
> I've mostly used hardline where I really needed it, like back when I was
> doing weak signal work on the low end of 144 MHz.
> 
> Is 75 ohm CATV-type RG-6 (F-6) coax available where you live? That's what I
> use on 160m to feed my inverted-L that is quite a distance from the
> operating position. I buy Commscope quad-shield flooded (buryable) F-6 with
> CCS conductor and a bonded inner shield in 1000' spools off eBay. I even
> use F connectors at 1500 watts (as do other hams). Neither the coax nor the
> F connectors get the least bit warm, even after several minutes of key-down
> at 1500 watts.
> 
> The loss of RG-6 is about the same as RG-213. And it will handle over 3000
> watts all day long in the hot sun.
> 
> 73, Mike
> www.w0btu.com
> 
> 
> ------------------------------
> 
> Message: 8
> Date: Sat, 26 Apr 2014 18:48:51 -0700
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: topband at contesting.com
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <535C6203.1070202 at audiosystemsgroup.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> On 4/26/2014 6:17 PM, Mike Waters wrote:
> > The loss of RG-6 is about the same as RG-213.
> 
> Only in an advertising brochure for the RG-6. On 160M, loss is all due 
> to copper, and there's  LOT more copper in RG213 than in any RG6 cables 
> I've seen. Remember -- the question was about 1,000 ft.
> 
> As to the suggestion of 75 ohm CATV coax -- it should work fine if 
> anything fairly large diameter is available at low cost. In the US, I've 
> heard that partial spools are often thrown in the trash by CATV 
> companies who don't want to deal with those shorter lengths. That may or 
> may not be true in Norway, where LA7THA lives. And even if he could find 
> this hard line, he would likely need to make several splices, and the 
> connectors could be expensive.
> 
> 1,000 ft of the best RG8 - RG213 cables I know of will burn a bit less 
> than 2 dB on topband, which is a LOT more than I would like to throw 
> away on 160M. N6RK's suggestion is about 1.7 dB better than that.
> 
> 73, Jim K9YC
> 
> 
> 
> 
> 
> ------------------------------
> 
> Message: 9
> Date: Sat, 26 Apr 2014 22:21:07 -0500
> From: Mike Waters <mikewate at gmail.com>
> To: topband <topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID:
> 	<CA+FxYXhMW=VqPR+C3BVmFM47XmvsRbdZsyut9v925qnpOUCsTQ at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
> 
> You're right about the loss being all in the copper center conductor, Jim.
> 
> I based that statement on a graph that Owen Duffy had on the old
> vk1od.netsite for solid center conductor. Perhaps I looked at it
> wrong, but I don't
> think so.
> 
> There were two charts, one for loss and the other for power handling
> capability. Maybe I have them confused.
> 
> However, I did look at Commscope's data sheet. I forget all the details,
> but their loss specs at MF looked really good.
> 
> 73, Mike
> www.w0btu.com
> 
> On Sat, Apr 26, 2014 at 8:48 PM, Jim Brown <jim at audiosystemsgroup.com>wrote:
> 
> > On 4/26/2014 6:17 PM, Mike Waters wrote:
> >
> >> The loss of RG-6 is about the same as RG-213.
> >>
> >
> > Only in an advertising brochure for the RG-6. On 160M, loss is all due to
> > copper, and there's  LOT more copper in RG213 than in any RG6 cables I've
> > seen.
> >
> 
> 
> ------------------------------
> 
> Message: 10
> Date: Sat, 26 Apr 2014 23:47:05 -0400
> From: "k1fz" <k1fz at myfairpoint.net>
> To: "Mike Waters" <mikewate at gmail.com>, "topband"
> 	<topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <FBE65F66B48143B08EB182640ED2D9F7 at k1fzPC>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
> 
> 
> A calibrated dummy load wattmeter at the far end of the cable can be a real 
> eye opener. Power loss distributed 1000 feet would not result in much 
> warming.
> 
> 73
> Bruce-K1FZ
> www.qsl.net/k1fz/pennantnotes.html
> 
> 
> 
> 
> ----- Original Message ----- 
> From: "Mike Waters" <mikewate at gmail.com>
> To: "topband" <topband at contesting.com>
> Sent: Saturday, April 26, 2014 11:21 PM
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder line.
> 
> 
> > You're right about the loss being all in the copper center conductor, Jim.
> >
> > I based that statement on a graph that Owen Duffy had on the old
> > vk1od.netsite for solid center conductor. Perhaps I looked at it
> > wrong, but I don't
> > think so.
> >
> > There were two charts, one for loss and the other for power handling
> > capability. Maybe I have them confused.
> >
> > However, I did look at Commscope's data sheet. I forget all the details,
> > but their loss specs at MF looked really good.
> >
> > 73, Mike
> > www.w0btu.com
> >
> > On Sat, Apr 26, 2014 at 8:48 PM, Jim Brown 
> > <jim at audiosystemsgroup.com>wrote:
> >
> >> On 4/26/2014 6:17 PM, Mike Waters wrote:
> >>
> >>> The loss of RG-6 is about the same as RG-213.
> >>>
> >>
> >> Only in an advertising brochure for the RG-6. On 160M, loss is all due to
> >> copper, and there's  LOT more copper in RG213 than in any RG6 cables I've
> >> seen.
> >>
> > _________________
> > Topband Reflector Archives - http://www.contesting.com/_topband
> > 
> 
> 
> 
> ------------------------------
> 
> Message: 11
> Date: Sun, 27 Apr 2014 00:00:23 -0700
> From: Jim Brown <jim at audiosystemsgroup.com>
> To: topband at contesting.com
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <535CAB07.2050900 at audiosystemsgroup.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> On 4/26/2014 8:21 PM, Mike Waters wrote:
> > You're right about the loss being all in the copper center conductor, Jim.
> 
> AND in the shield. One of the things that gives bigger coax lower loss 
> is that skin effect has the greater diameter of the shield to work with.
> 
> It's important to realize that "RG6" and "RG213" are no longer 
> specifications for the cable that we buy. There are, for example, 
> several dozen RG6s in the Belden catalog, many very different from each 
> other. Ditto for RG8, RG11, RG58, RG59, RG213, etc. You've got to look 
> at the mfr data sheets to find the real specs.
> 
> Example -- go to the Belden website and compare 9212, 8213, 9913, 
> 9913UF. Very different construction, very different loss 
> characteristics. All "RG11" (although I've seen 9212 described as RG11 
> in older catalogs and RG6 in at least one newer one). I've got a big 
> spool of 9212, and it's slightly smaller than  most RG11, but a lot 
> bigger than any RG6 I've ever seen.
> 
> I haven't seen Owen's charts, but there's a good chance they're out of 
> date in that respect.
> 
> For cables of approximately the same o.d. a pretty good determinant of 
> loss is DCR of the shield and center combined, because resistance at RF 
> is that DCR multiplied by skin effect. Cables with Cu clad Al, like 
> LMR400, are an exception. By the time you hit 2 MHz, it's equivalent to 
> solid copper. But NOT for Cu clad steel -- it doesn't get close to to 
> solid Cu for another octave or two. (an octave is double the frequency).
> 
> There's more detail about this in k9yc.com/Coax-Stubs.pdf
> 
> 73, Jim K9YC
> 
> 
> ------------------------------
> 
> Message: 12
> Date: Sun, 27 Apr 2014 06:36:22 -0400
> From: "Bill & Liz" <magoo at isp.ca>
> To: <topband at contesting.com>
> Subject: Topband: 1000 ft Hardline
> Message-ID: <E949F8D02FB44A25B9AB70098FC686B7 at BILLMAINPC>
> Content-Type: text/plain;	charset="utf-8"
> 
> Cable TV companies up this way have not used 75 ohm hardline for many years and several have large inventories in storage awaiting disposal.  I acquired two nearly full reels for free: one buryable 5/8? and the other non-buryable .  Each reel had about 1500-2,000 ft on it and the cable is now used in feeding both my TX antennas and Beverages located from 250-600 ft away from the house. 
> 
> The cable is available and probably free for the asking in your area too.
> 
> Bill VE3CSK
> 
> ------------------------------
> 
> Message: 13
> Date: Sun, 27 Apr 2014 10:44:39 -0400
> From: "Carl" <km1h at jeremy.mv.com>
> To: "Mike Waters" <mikewate at gmail.com>,	"topband"
> 	<topband at contesting.com>
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder
> 	line.
> Message-ID: <F6B18B1EB7ED42A4A87AFC73474B8616 at computer1>
> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
> 	reply-type=original
> 
> Hardline doesnt get chewed Mike; I run 750' of 1/2" CATV on the ground to 
> the Beverage hub. That was after flooded RG-11 and RG-6 got destroyed during 
> a few winter months when the critters were hungry.
> 
> Not a nibble in the past 24 years.
> 
> Carl
> KM1H
> 
> 
> ----- Original Message ----- 
> From: "Mike Waters" <mikewate at gmail.com>
> To: "topband" <topband at contesting.com>
> Sent: Saturday, April 26, 2014 9:17 PM
> Subject: Re: Topband: 1000 feet 5/8" hardline or 600ohm True Ladder line.
> 
> 
> > Hardline for 160 meters?
> >
> > I've mostly used hardline where I really needed it, like back when I was
> > doing weak signal work on the low end of 144 MHz.
> >
> > Is 75 ohm CATV-type RG-6 (F-6) coax available where you live? That's what 
> > I
> > use on 160m to feed my inverted-L that is quite a distance from the
> > operating position. I buy Commscope quad-shield flooded (buryable) F-6 
> > with
> > CCS conductor and a bonded inner shield in 1000' spools off eBay. I even
> > use F connectors at 1500 watts (as do other hams). Neither the coax nor 
> > the
> > F connectors get the least bit warm, even after several minutes of 
> > key-down
> > at 1500 watts.
> >
> > The loss of RG-6 is about the same as RG-213. And it will handle over 3000
> > watts all day long in the hot sun.
> >
> > 73, Mike
> > www.w0btu.com
> > _________________
> > Topband Reflector Archives - http://www.contesting.com/_topband
> >
> >
> > -----
> > No virus found in this message.
> > Checked by AVG - www.avg.com
> > Version: 2014.0.4570 / Virus Database: 3920/7401 - Release Date: 04/26/14
> > 
> 
> 
> 
> ------------------------------
> 
> Subject: Digest Footer
> 
> _______________________________________________
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> 
> 
> ------------------------------
> 
> End of Topband Digest, Vol 136, Issue 21
> ****************************************
 		 	   		  


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