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Doc, Booty Monster,
Doc has so eloquently stated what I was trying to get across to another CBer a while back from a practical perspective of what I believe happens on a Big Stick, A99 and I-Max antenna. By moving your feed line coax or changing its length to some degree will effect the direction and angle of radiation of your antenna system. Case in point a station that uses a stick antenna, got out very well in three different directions but did not get out a far near as well in my direction. They moved the radio room from one end of the house to the other an rerooted the coax using the same 100' of coax that has changed the signal strenth at this location. CMC can be seen by using a field strength meter running it up and down the outside of the feed line coax used, the less shielding the coax has the stronger its effects your signal strongth meter an if you cut the coax at a null point an put a connector on it, hook the deiver up then check the SWR at the null your SWR will read very close if not 1 to 1, so no extra heat will be generated because your driver will be seeing 50 ohms. The driver will be able to use full output with out generating extra heat, an that could be a good thing for an..................Oldtimer

<blockquote data-quote="walterb" data-source="post: 316408" data-attributes="member: 6966">Doc, Booty Monster,&nbsp;&nbsp; Doc has so eloquently stated what I was trying to get across to another CBer a while back from a practical perspective of what I believe happens on a Big Stick, A99 and I-Max antenna. By moving your feed line coax or changing its length to some degree will effect the direction and angle of radiation of your antenna system.&nbsp; Case in point a station that uses a stick antenna, got out very well in three different directions but did not get out a far near as well in my direction. They moved the radio room from one end of the house to the other an rerooted the coax using the same 100&#039; of coax that has changed the signal strenth at this location.&nbsp; CMC can be seen by using a field strength meter running it up and down the outside of the feed line coax used, the less shielding the coax has the stronger its effects your signal strongth meter an if you cut the coax at a null point an put a connector on it, hook the deiver up then check the SWR at the null your SWR will read very close if not 1 to 1, so no extra heat will be generated because your driver will be seeing 50 ohms.&nbsp; The driver will be able to use full output with out generating extra heat, an that could be a good thing for an..................Oldtimer</blockquote>

[QUOTE="walterb, post: 316408, member: 6966"] Doc, Booty Monster, Doc has so eloquently stated what I was trying to get across to another CBer a while back from a practical perspective of what I believe happens on a Big Stick, A99 and I-Max antenna. By moving your feed line coax or changing its length to some degree will effect the direction and angle of radiation of your antenna system. Case in point a station that uses a stick antenna, got out very well in three different directions but did not get out a far near as well in my direction. They moved the radio room from one end of the house to the other an rerooted the coax using the same 100' of coax that has changed the signal strenth at this location. CMC can be seen by using a field strength meter running it up and down the outside of the feed line coax used, the less shielding the coax has the stronger its effects your signal strongth meter an if you cut the coax at a null point an put a connector on it, hook the deiver up then check the SWR at the null your SWR will read very close if not 1 to 1, so no extra heat will be generated because your driver will be seeing 50 ohms. The driver will be able to use full output with out generating extra heat, an that could be a good thing for an..................Oldtimer [/QUOTE]

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