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#1
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Helix / helical polarization
Yes!
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#2
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Helix / helical polarization
"KD7HB" wrote in message ... Yes! That's how I remembered it - a mirror image - I think I confused myself (again) looking at AO-51's details. Dave - G6ZKC |
#3
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Helix / helical polarization
On 29/03/2011 17:00, KD7HB wrote:
Yes! No!!! Put 2 screws end to end and prove it!! Mind you even the professional got it wrong in the early days of satellites. Jeff |
#4
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Helix / helical polarization
"Dave" wrote in message ... "KD7HB" wrote in message ... Yes! That's how I remembered it - a mirror image - I think I confused myself (again) looking at AO-51's details. Dave - G6ZKC Only for moon bounce. For one antenna direct to another, they must both be the same. That would be RHC for both antennas or LHC for both antennas. If one is LHC and the other is RHC, there is about a 20 or so db difference, just as it would be going horizontal to vertical. If the signal bounces off something ONE time, then it is reversed. There are other things that may cause the signal to be reversed or atleast be stronger if reversed. There are cases where the OSCAR signal will be stronger if the opposite sense is used. Sometimes while using a circular antenna (KLM22C) I have found earth station that use horizontal or vertical antennas stronger one way than the other. |
#5
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Helix / helical polarization
On 3/29/2011 12:02 PM, Jeff wrote:
On 29/03/2011 17:00, KD7HB wrote: Yes! No!!! Put 2 screws end to end and prove it!! Mind you even the professional got it wrong in the early days of satellites. Jeff Correct. Amazing how many smart people don't get it. Often the "dumb" people are much smarter. tom K0TAR |
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