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#1
August 31st 13, 04:40 PM
posted to rec.radio.amateur.antenna
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Time Warner truck
On Friday, August 30, 2013 11:26:03 AM UTC-5, Jeff Liebermann wrote:
The antenna (or coax) does not get warmer because of mismatch loss. Sounds like a confusing play on words to me.  IF (the greater the mismatch loss) THEN (the higher the SWR) is TRUE AND IF (the higher the SWR) THEN (the greater the heat loss in the transmission line) is TRUE THEN (the greater the mismatch loss, the greater the heat loss in the transmission line). LOGIC 101 -- 73, Cecil, w5dxp.com |
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#2
September 1st 13, 09:48 PM
posted to rec.radio.amateur.antenna
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Time Warner truck
On 8/31/2013 10:40 AM, W5DXP wrote:
On Friday, August 30, 2013 11:26:03 AM UTC-5, Jeff Liebermann wrote: The antenna (or coax) does not get warmer because of mismatch loss. Sounds like a confusing play on words to me. IF (the greater the mismatch loss) THEN (the higher the SWR) is TRUE AND IF (the higher the SWR) THEN (the greater the heat loss in the transmission line) is TRUE THEN (the greater the mismatch loss, the greater the heat loss in the transmission line). LOGIC 101 -- 73, Cecil, w5dxp.com Actually, Jeff is correct in his original statement, "Actually, the mismatched RG-6/u can be better than the properly matched RG-58c/u." It can be shown that the losses are higher with properly matched RG-58c/u than with the mismatched RG-6/u. (Real-word circumstances, not loss-less line approximation.) John KD5YI |
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