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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[CQ\-Contest\]\s+Tuning\s+Sensitivity\s+Of\s+Modern\s+Amps\s*$/: 5 ]

Total 5 documents matching your query.

1. [CQ-Contest] Tuning Sensitivity Of Modern Amps (score: 1)
Author: David Pruett <k8cc@comcast.net>
Date: Sat, 05 Feb 2005 10:29:24 -0500
At 11:22 PM 2/4/2005, you wrote: I have two ex-PLA surplus 1kW+ solid-state amps still in storage waiting for a reason to do something with them... the timing of Dan's post is handy as I'm beginning
/archives//html/CQ-Contest/2005-02/msg00057.html (10,262 bytes)

2. Re: [CQ-Contest] Tuning Sensitivity Of Modern Amps (score: 1)
Author: K3BU@aol.com
Date: Sat, 5 Feb 2005 11:54:03 EST
a frequency and the load never changes (like in a broadcast or commercial application) but for us hams (and particularly contesters) the load sensitivity is a pain. << One remedy is to try to have an
/archives//html/CQ-Contest/2005-02/msg00059.html (7,997 bytes)

3. Re: [CQ-Contest] Tuning Sensitivity Of Modern Amps (score: 1)
Author: "N4XM Paul D. Schrader" <n4xm@iglou.com>
Date: Sat, 05 Feb 2005 12:23:45 -0500
Dave, I am very aware of your amp loading problem. But equal SWR does not mean equal load impedance. I put an XMatch antenna tuner on each antenna and then the problem is solved for a wide frequency
/archives//html/CQ-Contest/2005-02/msg00061.html (11,107 bytes)

4. Re: [CQ-Contest] Tuning Sensitivity Of Modern Amps (score: 1)
Author: David Pruett <k8cc@comcast.net>
Date: Sat, 05 Feb 2005 15:25:00 -0500
Paul, I understand that equal SWR does not mean equal load impedance. However, as the SWR approaches unity the number of different combinations of R & X diminishes. In both examples I quoted, the "eq
/archives//html/CQ-Contest/2005-02/msg00064.html (12,644 bytes)

5. Re: [CQ-Contest] Tuning Sensitivity Of Modern Amps (score: 1)
Author: "Michael Tope" <W4EF@dellroy.com>
Date: Sun, 6 Feb 2005 18:48:33 -0800
1.2:1. the bandwidth. High Q doesn't necessarily mean lower loss, Dave. I think you may be confusing loaded and unloaded Q. Unloaded Q is the instrinsic quality of the component. You want this to be
/archives//html/CQ-Contest/2005-02/msg00070.html (11,495 bytes)


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