Topband: Phasing lines

[clive at gm3poi.com]

Thanks Frank as I thought great to get the confirmation. 73 Clive GM3POI

 

From: donovanf at starpower.net <donovanf at starpower.net> 
Sent: 03 March 2020 21:24
To: topband at contesting.com
Subject: Re: Topband: Phasing lines

 

My experience with LDF4-50 and LDF4-75 is exact;y the same as Peter's.

 

Its always best to use an antenna analyzer or TDR to cut all of the

cables to the same length.  Its very, very easy to do.

  _____  

From: dj7ww at t-online.de <mailto:dj7ww at t-online.de> 
To: clive at gm3poi.com <mailto:clive at gm3poi.com> , topband at contesting.com <mailto:topband at contesting.com> 
Sent: Tuesday, March 3, 2020 3:39:21 PM
Subject: Re: Topband: Phasing lines

I have used LDF4-50 and LDF 4-75 by RFS for phasing lines on HF bands.
They did as expected with 88%, however on VHF/UHF I would measure how they
behave.

73
Peter


-----Original Message-----
From: Topband [mailto:topband-bounces+dj7ww=t-online.de at contesting.com] On
Behalf Of clive at gm3poi.com <mailto:clive at gm3poi.com> 
Sent: Dienstag, 3. März 2020 16:30
To: topband at contesting.com <mailto:topband at contesting.com> 
Subject: Topband: Phasing lines

Hi all, 

I wonder whether anyone has used LDF4-50A for phasing lines and verified the
VF as being 88%. If not have you an idea of any spread on the VF.

I want to use some where it could make the difference to cable length.
However nothing will be assumed it will be measured. I note from the spec
that

they give a tolerance of 5% but I doubt some how that the VF varies that
much.  73 Clive GM3POI

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