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" <mikew...@gmail.com>
To: "topband" <topband@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
<j...@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.
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