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Author Topic: 6BTV w/o 80M  (Read 409 times)
AI5RB
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Posts: 49




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« on: May 27, 2006, 06:25:59 PM »

I have a 6BTV and want to put it up without 80M (more stealthy) for now.
Do I just remove the 80M resonator, or include the tubing above the 40M trap, or remove the 40M trap too?
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AI5RB
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Posts: 49




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« Reply #1 on: May 28, 2006, 06:17:59 AM »

Has anyone tried an 80M Hamstick in place of the big 80M resonator?
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VE3IOS
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Posts: 79




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« Reply #2 on: May 28, 2006, 06:23:34 AM »

You can remove the 80 meter resonator. The tubing above the 40 meter trap will need to be adjusted again for resonance on 40. 80 effects 40.
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WD6GLA
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Posts: 75




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« Reply #3 on: May 30, 2006, 12:23:30 AM »

AI4RB,
I've wondered the same thing . I have an ancient Hygain 5 band vertical ( now 4 band ) laying in back of the house that has parted company with its 80 meter resonator many moons ago. I dont see why an 80 meter Hamstick couldnt be substituted for that wimpy coil and whip they used. Looks to me like it would work better anyway if a person could get it tuned . I guess you can peel windings off a Hamstick if needed ?  Or maybe a fiberglass fishing pole helically wound . Hmm , might  make an interesting project . Has anybody tried this ?            Bob
                                   
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WB2WIK
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« Reply #4 on: May 30, 2006, 08:20:50 AM »

>RE: 6BTV w/o 80M    Reply
by VE3IOS on May 28, 2006    Mail this to a friend!
You can remove the 80 meter resonator. The tubing above the 40 meter trap will need to be adjusted again for resonance on 40. 80 effects 40.<

::Wait a minute, guys.  The 6BTV doesn't have any 40 meter trap!  The uppermost trap on the 6BTV is for 30 meters.  The entire aluminum tubing length is resonant on 40 meters, and it all radiates.  The "40 meter trap" (although technically there isn't one) is the 80 meter resonator (loading coil).  If you unscrew the RM80S resonator from the top of the 6BTV, you have a 10-15-20-30-40 meter vertical, without retuning anything.  I've done this dozens of times.

WB2WIK/6
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AI5RB
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Posts: 49




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« Reply #5 on: May 30, 2006, 11:06:24 AM »

Perfect!
(Oops, the last trap is the 30M trap.............)
Thanks.
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