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Total 6 documents matching your query.

1. Topband: Noise Cancelling Headphones (score: 1)
Author: (Geoff Cottrell)
Date: Thu, 19 Dec 2002 10:37:04 +0000
I have just taken delivery of a pair of BOSE noise cancelling headphones as a self-Christmas present. My intention was to use them to listen to music during long boring airline trips or just cancel t
/archives//html/Topband/2002-12/msg00237.html (7,010 bytes)

2. Topband: Inverted L Directivity (score: 1)
Author: (Geoff Cottrell)
Date: Sun, 10 Nov 2002 21:48:43 -0000
Recent posts raise the question: Why is there a small "F/B" of about 2dB with the inv L? The best I can do, without a computer model, is the following explanation; it is a bit simplistic but I think
/archives//html/Topband/2002-11/msg00038.html (7,665 bytes)

3. Topband: Thanks to all!! (score: 1)
Author: (Geoff Cottrell)
Date: Mon, 31 Dec 2001 14:20:02 +0000
Dear Topbanders - especially those who took part in the SP contest. After returning to amateur radio in Feb 2001 after a qrt of 32 years I have had a superb time back on the one and only band for me:
/archives//html/Topband/2001-12/msg00183.html (8,035 bytes)

4. Topband: QTH too small for Beverage! (score: 1)
Author: (Geoff Cottrell)
Date: Tue, 17 Jul 2001 15:23:43 +0100
Dear Topbanders My urban QTH in Oxford, UK is small (rear backyard 20 ft x 80 ft), and is clearly too small for a 160 m Beverage! This is a shame as I would like to be able to hear better the DX that
/archives//html/Topband/2001-07/msg00028.html (8,382 bytes)

5. Topband: Inverted "L" (score: 1)
Author: (Geoff Cottrell)
Date: Thu, 26 Apr 2001 16:13:54 +0100
I have just put up an Inverted "L" ant for topband (+ higher) and am trying to decide how long the top loading wire should be for best dx performance. At present the "vertical" section is 50 feet (sl
/archives//html/Topband/2001-04/msg00081.html (8,145 bytes)

6. Topband: Re: K2/100 (score: 1)
Author: "Geoff Cottrell" <>
Date: Tue, 16 Dec 2003 11:35:23 -0000
John I have been using a K2/100 for topband DX for two years, with particular interest in weak signal CW work. I have performed some A/B comparisons with a fully filtered FT1000MkV using a range of s
/archives//html/Topband/2003-12/msg00136.html (7,478 bytes)

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