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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+PREAMP\/PRESELECTOR\s*$/: 2 ]

Total 2 documents matching your query.

1. Topband: PREAMP/PRESELECTOR (score: 1)
Author: "Bill and Liz" <magoo@isp.ca>
Date: Sat, 25 Aug 2012 12:09:57 -0400
Most Beverages don't require a preamp of any type, in my estimation. The shorter ones may need a bit of a boost but those over 500 ft seem to do quite nicely on their own most of the time. If you do
/archives//html/Topband/2012-08/msg00304.html (7,583 bytes)

2. Re: Topband: PREAMP/PRESELECTOR (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Sat, 25 Aug 2012 14:43:27 -0400
That is a mediocre TOI amplifier for a "line driver" or broadband "booster" application. It is a simple single J310 JFET source follower, and only makes about 5 -15 dBm TOI. That device also has pre
/archives//html/Topband/2012-08/msg00306.html (7,602 bytes)

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