| Author |
Message |
    
Charliebrown
Advanced Member
Username: Charliebrown
Post Number: 566
Registered: 10-2002
| | Posted on Monday, October 02, 2017 - 2:39 pm: | 
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Hello my friend, I am planning on putting my three element 2 meter beam above my three element 11 meter beam . My 11 meter beam is horizontal and my 2 meter beam will be vertical. So how far above my 11 meter beam will I have to mount my 2 meter beam for best performance? |
Tech237
Moderator
Username: Tech237
Post Number: 1886
Registered: 4-2004
| | Posted on Wednesday, October 04, 2017 - 8:37 am: |
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Tech833 may disagree but I would go with the 2m element tips at least 36 inches away from the 11M beam, and the more the better.
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
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Tech833
Moderator
Username: Tech833
Post Number: 2387
Registered: 8-2002
| | Posted on Thursday, October 05, 2017 - 2:12 am: |
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Simon is correct. For 2m, 36 inches is a full wave. However, the more separation, the better.
Your radio 'Mythbuster' since 1998
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Charliebrown
Advanced Member
Username: Charliebrown
Post Number: 567
Registered: 10-2002
| | Posted on Thursday, October 05, 2017 - 8:03 am: |
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Thank you both for the very good advice. It will be a long time before I can do this now. I have been in a bad car accident and I need every one prayers. |
Charliebrown
Advanced Member
Username: Charliebrown
Post Number: 573
Registered: 10-2002
| | Posted on Sunday, October 22, 2017 - 12:37 am: |
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What is the full wave for 70cm ? Also I live in a valley with tall mountain's surrounding me. My 2 meter/70cm antenna is 32 foot off the ground. Would it be to my advantage to increase the antenna higher ? If so how much higher would be needed ? By the way my antenna is a beam antenna. |
Tech237
Moderator
Username: Tech237
Post Number: 1893
Registered: 4-2004
| | Posted on Monday, October 23, 2017 - 8:44 am: |
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70cm is 27.5 inches (roughly), so that is a full wave. A half wave is 13.75 inches.
833 - 36 inches is a half wave at 2m, not a full wave.
Tech237
N7AUS
God made me an athiest, who are you to question his wisdom?
|
Charliebrown
Advanced Member
Username: Charliebrown
Post Number: 575
Registered: 10-2002
| | Posted on Tuesday, October 24, 2017 - 6:35 pm: |
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Thank you TECH 237. I and other's count on this forum to get the best help and knowledge. I think it is the best anyway. |
N8fgb
Intermediate Member
Username: N8fgb
Post Number: 130
Registered: 5-2002
| | Posted on Thursday, October 26, 2017 - 5:14 pm: |
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"What is the full wave for 70cm ?"
You asked and answered it alol in one sentence.
The wavelength is 70cm long. |
Tech833
Moderator
Username: Tech833
Post Number: 2392
Registered: 8-2002
| | Posted on Friday, October 27, 2017 - 2:09 pm: |
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Yep, you're right. I blew it. Thanks!
Your radio 'Mythbuster' since 1998
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Charliebrown
Advanced Member
Username: Charliebrown
Post Number: 577
Registered: 10-2002
| | Posted on Saturday, November 04, 2017 - 9:34 pm: |
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Hey 833, No big deal. I have not seen anyone yet that did not make any mistake's. Your far better than I. Have a blessed day my friend. |
