Running vhf and uhf repeaters along the Great Lakes has taught me some
new things. I woke up one summer morning listening to a Michigan
repeater on my vhf frequency on my handheld beside my bed. Tried to key
up my repeater 40 feet away and couldnt even hear it! Could however hold
a conversation on the distant repeater,wild tropo! Also notice local
propagation go from super to dead depending on the layering along the
southern Erie lakeshore. Now if I could just get uhf reliable across
lake Erie-yeah,right! Also,heard the LDE on 10 meters from here some 28
years ago,impressive! 73,Lee,N3APP
Bob Dengler wrote:
>At 1/30/2005 07:11 PM, you wrote:
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>>I wish to say thanks to all who replied on my issue with the transmit
>>problems. After looking at everything on the repeater, it has
>>cleared itself up. I talked with a few other repeater owner's, and
>>it seems that everyone was suffering. We have related it to weather
>>and propagation. The last two days everything has been back to
>>normal, repeater is heard it's normal range. Why the recieve was not
>>affected is strange, but it works out that way. Again Thanks.
>>
>>Mathew
>>
>>
>
>While I've not experienced this myself, I've had hams in the Ventura/Santa
>Barbara area tell me that they've witnessed signals from line-of-sight
>systems simply go away at times. That area is highly influenced by tropo
>ducting, so maybe there is a connection - if ducts can steer RF into areas
>far beyond line-of-sight, maybe they can also steer signals AWAY from
>normal line-of-sight areas?
>
>I have no explanation as to why your RX wasn't affected unless the same
>tropo conditions steered away the atmospheric noise that normally dominates
>2 meters; with both signal & noise reduced the overall S/N change at your
>low noise RX would be minimal. This would be quite an interesting study
>for anyone interested in VHF propagation & radiometry.
>
>Bob NO6B
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