PDA

View Full Version : Ringo Ranger ARX-2 Tuning Problem



WB5UMG
06-02-2012, 11:49 PM
ARX-2 Ringo Ranger stored few years and testing not working out: Cleaned up, No-Ox all joints, checked measurement for 145-147, New 213 Coax and PL 259's, placed on a 10' aluminum pole with pole grounded and pole attached to golfcart away from metal buildings.
Best I could tune to was 2 to 1 SWR. Have about wore that little tuning thingy out trying to find a flat spot??
Any help appreciated, I probably been out in the East Texas sun way to long!
Thanks fer any suggestions!
:mad:WB5UMG
Dee

WB2WIK
06-03-2012, 12:01 AM
At only 10' above ground it's likely coupling to anything near it, including the golf cart.

Also Ringos do have a common-mode issue (not sufficiently decoupled from the support), so both the mast and the coax feedline become part of the antenna, to some extent. You might try changing the length of coax and repeating the measurement, to see if that's the issue.

K0BG
06-03-2012, 12:18 AM
Steve's correct! Turns out, it only takes about 2 or 3, mix 31 beads over the feed line to do a decent job of choking the common mode.

KB4QAA
06-03-2012, 02:39 AM
In all your cleaning and refurbishing, check that you don't have the tuning arm on backwards to the opposite side of the vertical element. This is a common error.

WB5UMG
06-03-2012, 02:31 PM
Common Error is sure a problem, just looked at tuning arm and I have it on wrong side of vertical!! Thank You so much. Will correct this afternoon and test again.

Now I would also like to address the common mode Steve and Alan mentioned also, but not familiar with bead work, will search for mixed 31's and also need to know where best to place them?
Agn, appreciate all help and also for QRZ site
WB5UMG
Dee

WB2WIK
06-03-2012, 08:29 PM
Amidon Associates is a good source for the ferrites.

You may or may not need them, but they can't hurt anything.

WB5UMG
06-04-2012, 03:48 AM
With all the help got down to 1.3 to 1 so maybe not need the beads but as was said wont hurt, will give me so experience n beads!

KD7HB
06-04-2012, 07:51 PM
You may have a 2 meter Ringo antenna instead of a Ringo Ranger. The Ranger has a decoupling section with a 3 wire ground plain that is about 3 feet below the matching loop. Your coax to the shack attaches to a connector right at the ground plain. A short length of coax attaches the matching section to the ground plain section.

Paul, KD7HB

WB5UMG
06-05-2012, 12:49 PM
No Sir, is just a plain Ringo Ranger, but go info to know about the Ringo.
73's
WB5UMG

ad: SWFla-1