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References: [ +from:jim.thom@telus.net: 62 ]

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61. Re: Topband: Quarter wave sloper on crank up tower ? (score: 1)
Author: "jim.thom jim.thom@telus.net" <jim.thom@telus.net>
Date: Sun, 11 May 2025 09:24:09 -0700
The concept behind the 1/4 wave sloper is...... the 50 ohm feed point is at the top of the tower...90' above ground. And if it's less than 50 ohms, a simple helical hairpin across the feedpoint is on
/archives//html/Topband/2025-05/msg00013.html (9,034 bytes)

62. Topband: NR-1 noise reduction unit. (score: 1)
Author: "jim.thom jim.thom@telus.net" <jim.thom@telus.net>
Date: Tue, 11 Nov 2025 07:28:10 -0800
Has anybody used this unit ? It's unique in that it does not require a separate noise sense ant. It's made by SV3ORA. It can also be installed in the RX only loop, commonly used in most xcvr's. Then
/archives//html/Topband/2025-11/msg00008.html (7,031 bytes)

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