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[TowerTalk] Loss in Connectors

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Subject: [TowerTalk] Loss in Connectors
From: (Pete Smith)
Date: Mon, 21 Jan 2002 08:17:06 -0500
At 01:52 AM 1/21/02 -1000, KH6HI wrote:
>Hi Guys,
>Been thinking about the previous discussion about connector loss.
>The consensus was about 0.2dB loss per connector.
>Now was that putting two pieces of coax together which would consist of two 
>PL259s and a barrel in between, or 0.6dB?  3 X 0.2=0.6dB.
>Still would not very significant for a non-contester like me.

Ted, that "consensus" is high at HF by a factor of at least 10.  If it were
correct, such a connection would run noticeably warm at a KW input, and it

I tested my HF feedline the other day with an MFJ 259B, in a setup that
consisted of the following, in order from the 259B out:  pl259, short coax,
pl259, bulkhead connector, pl259, length of coax, pl259, barrel, hardline,
barrel, pl259, length of coax, pl259.  The loss was essentially
indistinguishable from the published loss figures for the feedline(s)
alone, when it "should have been" 1.8 dB higher.  

73, Pete N4ZR

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