Topband: Phasing lines

[donovanf at starpower.net]

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. 

----- Original Message -----

From: dj7ww at t-online.de 
To: clive at gm3poi.com, 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 
Sent: Dienstag, 3. März 2020 16:30 
To: 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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