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I like to use a choke for CMC control.
A 4:1 balun would indicate that the impedance expected at the shack end of the ladder line should have been in the 200 - 300 ohms range as one source I read said the 4:1 balun should give a useable match to 50 Ohm coax.

The coax choke has been said to have 1:1 balun potential addressing not only CMC as a choke, but offering a smooth transition from the unbalanced coax to the balanced dipole or similar antennas.
My experiences with the coax choke has been noticeable in one consistent respect - I see the SWR read better on the outer edges of the bandwidth. The center stays the same.
Because I have not done an EDZ before I don't know much about what to expect from the feedpoint mismatch. First good opportunity I will put the MFJ analyzer right at the bottom of the ladder line and see what's going on right there for sure.

You are right, though. Often we find our experiences don't hold up to the arguments put forward . . .

<blockquote data-quote="HomerBB" data-source="post: 435211" data-attributes="member: 8569">I like to use a choke for CMC control. A 4:1 balun would indicate that the impedance expected at the shack end of the ladder line should have been in the 200 - 300 ohms range as one source I read said the 4:1 balun should give a useable match to 50 Ohm coax. The coax choke has been said to have 1:1 balun potential addressing not only CMC as a choke, but offering a smooth transition from the unbalanced coax to the balanced dipole or similar antennas. My experiences with the coax choke has been noticeable in one consistent respect - I see the SWR read better on the outer edges of the bandwidth. The center stays the same. Because I have not done an EDZ before I don&#039;t know much about what to expect from the feedpoint mismatch. First good opportunity I will put the MFJ analyzer right at the bottom of the ladder line and see what&#039;s going on right there for sure.You are right, though. Often we find our&nbsp; experiences don&#039;t hold up to the arguments put forward . . .</blockquote>

[QUOTE="HomerBB, post: 435211, member: 8569"] I like to use a choke for CMC control. A 4:1 balun would indicate that the impedance expected at the shack end of the ladder line should have been in the 200 - 300 ohms range as one source I read said the 4:1 balun should give a useable match to 50 Ohm coax. The coax choke has been said to have 1:1 balun potential addressing not only CMC as a choke, but offering a smooth transition from the unbalanced coax to the balanced dipole or similar antennas. My experiences with the coax choke has been noticeable in one consistent respect - I see the SWR read better on the outer edges of the bandwidth. The center stays the same. Because I have not done an EDZ before I don't know much about what to expect from the feedpoint mismatch. First good opportunity I will put the MFJ analyzer right at the bottom of the ladder line and see what's going on right there for sure. You are right, though. Often we find our experiences don't hold up to the arguments put forward . . . [/QUOTE]

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