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> > Roger, > > I read you're e-mail on the force-12 reflector about the force-12 C3SS > antenna. > I have a C3ss on order and it should arrive next week. Have been > waiting 5 weeks > for it. You're comments on the antenna excites me, will be installed > on a Rohn > 30 foot tower, should perform good. Any suggestions on assembly or > anything about the antenna. Once installed maybe we can work 20 meters > or ? > > Ray > N6XVO > n6xvo@arrl.net Absolutely Ray; Well, one thing - Dayton happened and as you may know each antenna is built at the factory and fully assembled and then sent on to you to assure excellent quality control. Suggestions; 1. Read directions over and over after you look at the parts till you feel you thoroughly understand what they are saying. 2. There is, or was in my book a bad direction- my book # is dwC3SS1.001 Force 12 C-3SS(/D)- if yours is different the misdirection may not be there. Starting page 6 of 14 #16 d)- it states that el 3 the 10 meter reflector has extra holes for vswr adjustment. It does not. It has the normal 3 holes for rivets. I did not mention this to Natan and he may disagree with me, and if so I would like to hear from him. But the manual also states in other areas that VSWR is adjusted with the 10 and 15M drivers and the 20 Meter Loading. The elements that will adjust with rivet hole placement are the 10 meter driver and the 15 meter driver and the instructions are correct - I would set it up as stated unless you know you will work a particular part of the band - mine as normal has low vswr through most of both bands. The 20 meter driver vswr is adjusted by moving the loading devices. 3. The instructions on the 20M loading devices and the pictures of the devices show them in an absolute horizontal plane. They do this starting with #1 for the 20M reflector and #1 sub 6} and #24 sub 29. This is correct. And the loading will look horizontal and do also in pictures of it in the manual, or nearly so. THEN, Section lll # 7} it tells you to mount the 20M reflector, and the drivers so that the machine screws are at a 45 degree angle. See also pictures in Feedpoint Detail. When you do this the loading also swivels to about a 45 degree angle on the 20 meter driver and reflector. I DID talk to Natan about this and he said that the reason for the rotation was to keep the feedpoint screw heads far away from the boom, which this does. Natan also said that the 45 degree angle of the loading would have no effect and I have seen none- tho I have made no comparisons as it is mounted and working like a KW amp. 4. Make sure the measurements are exact - that's why they build the beam for you. Double check measurements prior to riveting and all rivets should fit exactly as the manual says. 5. You will love the mounting method of the beam to the mast - simple and ingenious and maybe patented at this time. You will love the beam. Call 800# if you would like to check order status. I used to write Tech Manuals for the Air Force and was darned good at it. I would like to get my hands on the the for the C3XX and others - Of course, I would need the antennas and a proper tower to make sure of my writing, Hi, but quite serious if you are reading Natan. Write me back at Talk with any other concerns and progress. Enjoy, and one extra note as I am picky - too picky - you left the Subject Line blank and that has a tendency to bury emails in certain threads. -- Roger Doran, W1MZA, On The RockBound Coast of Maine So Much To Learn........ So Little Time........ -- -------------------------------------------- Force12Talk mailing list provided as a service by Force 12 Antennas, Inc. Force 12 Web site: http://www.qth.com/force12 Submissions: send to Force12Talk@qth.com To unsubscribe: send a blank e-mail to Force12Talk-leave@qth.com Force12Talk Message Archive: http://www.qth.com/force12/list/force12talk For problems with the list, contact force12@qth.com |
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