Kent Amateur Radio Society

Chestertown, Maryland Kent County, USA

Established 1986

Worton Tower Project by Bill, N3DOU

Worton tower project report

by Bill, N3DOU

April 4 2019

Proper feed line bonding and grounding where our feed lines enter the building was pretty much non existent. I provided Stellar with a BOND BAR, 8 foot copper ground rod and ½” feed line ground kits.

Stellar drove the ground rod in, cadwelded a #2 copper conductor to it, used a ¾” PVC conduit I provided to protect the ground, mounted the ground bar, secured and rerouted the electric bond and terminated all of the above to the bond bar.

I had Stellar provide a 7/8” ground kit for our new VHF feed line so it is properly grounded at the top, before it leaves the tower and now before it enters the building. We provided the 2 ground kits used on the tower.

We had Stellar tower sweep our four UHF ½” feed line and confirmed what we all ready knew that three of the four feed lines had very high SWR using their TDR. I had them identify the four ½” Link receiver feed lines. Once we identified the one good ½” feed line they went ahead and installed a ground kit at the building for that cable that tested good.

There multiple very interesting failures with the other three feed lines noe of which was the feed line itself.

  1. Water in 2 of the YAGIS which we replaced them both.

One was a new in box exact replacement and one was a used UHF YAGI we had in storage.

  1. 2 Connector mismatches!!! The feed line to the top had a ½” UHF female connector and the jumper to the antenna was a male N connector. The insulator between the center conductor and the threaded portion on UHF female connector had to have been removed and the Male N connector will thread up but there is NO connection between the 2 center pins !!!!!!!!!!!!!!!!!!!
  2. One jumper to the antenna was defective as well.

So they replaced the UHF connector with the correct N connector.

Once the 3 remaining ½” feed lines were tested good they went ahead and installed ground kits at the building end on them.

Now all 5 of our antennas at the 100 foot level all test good.

The only feed line ground left is at bottom of the tower. I left the ½” ground kits on site for them to install on a possible return trip.

Field Day 2019

KARS is planning to participate in Field Day, June 22 – 23, 2019.  The event will be held at the Massey Aerodrome.  If you would like to participate, please contact Bobby, N3WGC.  His E-mail is N3WGC@K3ARS.org. Continue Reading

Jamboree on the Air  2016

Jamboree on the Air 2016

This year’s Jamboree on the Air (JOTA) took place at the Chestertown American Legion.  The KARS EMCOMM trailer was there Saturday afternoon October 15th.  KARS member Chris Cote, KE5NJ taught the Merit Badge Class and Paul Gerhardt, from the QA Radio Club, manned the HF station in the trailer. Continue Reading

Rock Hall Triathlon 2016

Rock Hall Triathlon 2016

KARS had a successful weekend October 1st and 2nd, providing communications at the Rock Hall Triathlon.  The day started early on Saturday and ended late.  Then we all came back again on Sunday to do it all over again! The event went smoothly with Jamie (KC3CUV) and Richard (K3JB) at Net Control and about 10… Continue Reading

Field Day 2016 at Massey Aerodrome

Field Day 2016 at Massey Aerodrome

This year the Kent County Amateur Radio Society held it’s annual field Day at the Massey Aerodrome.  With more space, interesting views and fantastic weather – we all had a great time!  Operating under battery, generator and solar power, the club made over 450 contacts – 240 of those were CW  by Paul KC8GPR.  See… Continue Reading

KARS is a 501 C3 non-profit corporation. We regularly offer our communication services to local county public events. If you would like to participate, join our organization, or request our services, pleasecontact us.

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