Hello Mike and others,
IMHO, ATU is nearly a must. While we can have a well matched antenna, the ATU
serves two purposes:
1. a preselector gives some sort of improvement in selectivity under strong out
band QRM;
2. for whatever reasons there are something wrong with the 'well matched'
antenna,
Thanks Jim. I should qualify ATU as 'antenna tuning unit' instead of
'automatic
tuning unit'
My fingers just run too fast.
73,
Johnny VR2XMC
寄件人﹕ Jim Brown
收件人﹕ elecraft@mailman.qth.net
傳送日期﹕ 2011/4/8 (五) 2:51:03 PM
主題: Re: [Elecr
On 4/7/2011 6:18 PM, Johnny Siu wrote:
> IMHO, ATU is nearly a must.
That depends a lot on your style of operating, your antennas, your
budget, and how much power you are willing to give away in the antenna
tuner. ARRL lab tests have shown that some antenna tuners are a lot more
efficient than
On 4/8/2011 06:51, Jim Brown wrote:
> On 4/7/2011 6:18 PM, Johnny Siu wrote:
>> IMHO, ATU is nearly a must.
>
> That depends a lot on your style of operating, your antennas, your
> budget, and how much power you are willing to give away in the antenna
> tuner. ARRL lab tests have shown that some an
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