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Alexis,

You said earlier that you wanted to tune the antenna for ch. 20 so try this, if you have some extra RG-8X @ 82%VF. Cut a piece 59' 3.5", put connectors on both ends, connect one end to the antenna feedpoint or Line Isolator if you are going to use it, and the other end to a SWR meter (meter, analyzer, etc.). Tune for lowest SWR on ch20 (27.205). This will give you a 2 wavelength @ 27.205 MHz piece of RG-8X coax, and it bypasses the antenna switch. Make sure the antenna is mounted where it is going to be used when tuning it. You always want to "final" tune your antenna with it up and in it's "operating" position/location.

I would highly recommend using a dedicated single piece of coax to the Vector if possible and if possible, use better coax.

With a 2 wavelength piece of of RG-8x (@ 27.205) you are going to lose 19% of your power going out and 19% of your incoming signal. With an antenna switch in between, even more due to insertion loss. With a 61' 5 9/16" piece of LMR400 (2 wavelengths @ 27.205MHz), you will lose 9% of your power going out and 9% of your incoming signal.

Imitation LMR400 can be pretty cheap and it will use a standard PL-259.

<blockquote data-quote="Dr_DX" data-source="post: 746182" data-attributes="member: 1260">Alexis,You said earlier that you wanted to tune the antenna for ch. 20 so try this, if you have some extra RG-8X @ 82%VF.&nbsp; Cut a piece 59&#039; 3.5&quot;, put connectors on both ends, connect one end to the antenna feedpoint or Line Isolator if you are going to use it, and the other end to a SWR meter (meter, analyzer, etc.).&nbsp; Tune for lowest SWR on ch20 (27.205).&nbsp;&nbsp; This will give you a 2 wavelength @ 27.205 MHz piece of RG-8X coax, and it bypasses the antenna switch.&nbsp; Make sure the antenna is mounted where it is going to be used when tuning it.&nbsp; You always want to &quot;final&quot; tune your antenna with it up and in it&#039;s &quot;operating&quot; position/location.I would highly recommend using a dedicated single piece of coax to the Vector if possible and if possible, use better coax. With a 2 wavelength piece of of RG-8x (@ 27.205) you are going to lose 19% of your power going out and 19% of your incoming signal.&nbsp; With an antenna switch in between, even more due to insertion loss.&nbsp; With a 61&#039; 5 9/16&quot; piece of LMR400 (2 wavelengths @ 27.205MHz), you will lose 9% of your power going out and 9% of your incoming signal.Imitation LMR400 can be pretty cheap and it will use a standard PL-259.</blockquote>

[QUOTE="Dr_DX, post: 746182, member: 1260"] Alexis, You said earlier that you wanted to tune the antenna for ch. 20 so try this, if you have some extra RG-8X @ 82%VF. Cut a piece 59' 3.5", put connectors on both ends, connect one end to the antenna feedpoint or Line Isolator if you are going to use it, and the other end to a SWR meter (meter, analyzer, etc.). Tune for lowest SWR on ch20 (27.205). This will give you a 2 wavelength @ 27.205 MHz piece of RG-8X coax, and it bypasses the antenna switch. Make sure the antenna is mounted where it is going to be used when tuning it. You always want to "final" tune your antenna with it up and in it's "operating" position/location. I would highly recommend using a dedicated single piece of coax to the Vector if possible and if possible, use better coax. With a 2 wavelength piece of of RG-8x (@ 27.205) you are going to lose 19% of your power going out and 19% of your incoming signal. With an antenna switch in between, even more due to insertion loss. With a 61' 5 9/16" piece of LMR400 (2 wavelengths @ 27.205MHz), you will lose 9% of your power going out and 9% of your incoming signal. Imitation LMR400 can be pretty cheap and it will use a standard PL-259. [/QUOTE]

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