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I used a 9ft coax jumper to tune the antenna at the feedpoint. I then used only the 60ft main run from antenna directly to analyzer and had the same readings at 27.400.
R=50
X=0
VSWR: 1.0:1.
This was before I added the other coax jumper that I don't know the length of into the equation. I then raised my antenna and tool readings again at radio. This is where my issue started.
R=59
X=0
VSWR: 1.1:1.
I then added another 9ft rg8x coax jumper and a surge arrester and 2 n-male to SO239 adapters near the radio. This brought the readings back down to the following.
R=48-49
X=0
VSWR: 1.0:1.
I have not since had the opportunity to go back to the main 60ft run and see what the readings are there. All coax being used is Andrew lmr400 minus the 9ft coax jumper from surge arrester to radio which is rg8x. I've tried several different lengths of coax added at the surge arrester. 3,6,9,12, and 18ft coax jumpers were added. VF was not taken into account. Just cut all coax to multiples of 3ft. Used lmr400. The only coax jumper that makes the system happy is the 9ft rg8x coax jumper. I know it sounds weird, but I have even went as far as trying a different 9ft rg8x coax jumper and it didn't have the same effect as the one I'm using. The readings seem best with the coax jumper I have in place.
So at this point I am leaving it the way it is until I can get to the main 60ft run and check the readings there as like I stated above I did use this coax at the radio end before routing coax and this makes it too short to reach my radio room. So this was the reason for adding the extra length of coax I already had in place from the sirio tornado setup. All that has changed from that setup is the main 60ft run that was new was used. And also I am not sure how long the piece of coax from the 60ft main run is. The coax is all routed and dressed in so its not easy to measure. I could do it with some string I'm sure. But like I said I want to check the resadings at the 60ft main line before I start messing with the gamma match.
I have and am using a 1/4 wave length coax jumper (rg8x), for the last piece of coax that makes the readings at the radio happy, but I want to ask is this the same as using a 1/2 wave coax jumper?? If not can you elaborate as to why? I appreciate all the replies. Thanks much.

<blockquote data-quote="222DBFL" data-source="post: 537641" data-attributes="member: 36544">I used a 9ft coax jumper to tune the antenna at the feedpoint.&nbsp; I then used only the 60ft main run from antenna directly to analyzer and had the same readings at 27.400. R=50X=0VSWR: 1.0:1.&nbsp; This was before I added the other coax jumper that I don&#039;t know the length of into the equation.&nbsp; I then raised my antenna and tool readings again at radio.&nbsp; This is where my issue started.&nbsp; R=59X=0VSWR: 1.1:1.I then added another 9ft rg8x coax jumper and a surge arrester and 2 n-male to SO239 adapters near the radio.&nbsp; This brought the readings back down to the following.&nbsp; R=48-49X=0VSWR: 1.0:1.&nbsp; I have not since had the opportunity to go back to the main 60ft run and see what the readings are there.&nbsp; All coax being used is Andrew lmr400 minus the 9ft coax jumper from surge arrester to radio which is rg8x.&nbsp; I&#039;ve tried several different lengths of coax added at the surge arrester.&nbsp; 3,6,9,12, and 18ft coax jumpers were added.&nbsp; VF was not taken into account. Just cut all coax to multiples of 3ft.&nbsp; Used lmr400.&nbsp; The only coax jumper that makes the system happy is the 9ft rg8x coax jumper. I know it sounds weird, but I have even went as far as trying a different 9ft rg8x coax jumper and it didn&#039;t have the same effect as the one I&#039;m using.&nbsp; The readings seem best with the coax jumper I have in place.&nbsp; So at this point I am leaving it the way it is until I can get to the main 60ft run and check the readings there as like I stated above I did use this coax at the radio end before routing coax and this makes it too short to reach my radio room.&nbsp; So this was the reason for adding the extra length of coax I already had in place from the sirio tornado setup.&nbsp; All that has changed from that setup is the main 60ft run that was new was used.&nbsp; And also I am not sure how long the piece of coax from the 60ft main run is.&nbsp; The coax is all routed and dressed in so its not easy to measure.&nbsp; I could do it with some string I&#039;m sure.&nbsp; But like I said I want to check the resadings at the 60ft main line before I start messing with the gamma match.&nbsp; I have and am using a 1/4 wave length coax jumper (rg8x), for the last piece of coax that makes the readings at the radio happy, but I want to ask is this the same as using a 1/2 wave coax jumper??&nbsp; If not can you elaborate as to why?&nbsp; I appreciate all the replies.&nbsp; Thanks much.</blockquote>

[QUOTE="222DBFL, post: 537641, member: 36544"] I used a 9ft coax jumper to tune the antenna at the feedpoint. I then used only the 60ft main run from antenna directly to analyzer and had the same readings at 27.400. R=50 X=0 VSWR: 1.0:1. This was before I added the other coax jumper that I don't know the length of into the equation. I then raised my antenna and tool readings again at radio. This is where my issue started. R=59 X=0 VSWR: 1.1:1. I then added another 9ft rg8x coax jumper and a surge arrester and 2 n-male to SO239 adapters near the radio. This brought the readings back down to the following. R=48-49 X=0 VSWR: 1.0:1. I have not since had the opportunity to go back to the main 60ft run and see what the readings are there. All coax being used is Andrew lmr400 minus the 9ft coax jumper from surge arrester to radio which is rg8x. I've tried several different lengths of coax added at the surge arrester. 3,6,9,12, and 18ft coax jumpers were added. VF was not taken into account. Just cut all coax to multiples of 3ft. Used lmr400. The only coax jumper that makes the system happy is the 9ft rg8x coax jumper. I know it sounds weird, but I have even went as far as trying a different 9ft rg8x coax jumper and it didn't have the same effect as the one I'm using. The readings seem best with the coax jumper I have in place. So at this point I am leaving it the way it is until I can get to the main 60ft run and check the readings there as like I stated above I did use this coax at the radio end before routing coax and this makes it too short to reach my radio room. So this was the reason for adding the extra length of coax I already had in place from the sirio tornado setup. All that has changed from that setup is the main 60ft run that was new was used. And also I am not sure how long the piece of coax from the 60ft main run is. The coax is all routed and dressed in so its not easy to measure. I could do it with some string I'm sure. But like I said I want to check the resadings at the 60ft main line before I start messing with the gamma match. I have and am using a 1/4 wave length coax jumper (rg8x), for the last piece of coax that makes the readings at the radio happy, but I want to ask is this the same as using a 1/2 wave coax jumper?? If not can you elaborate as to why? I appreciate all the replies. Thanks much. [/QUOTE]

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