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Total 5 documents matching your query.

1. RE: LF: Test failed... (score: 1): Author: "Gasparik Richard" <[email protected]>; Date: Mon, 19 Jan 2004 16:13:56 +0100; Hi Rik and others... After I discuss this problems with Bob OK2BVG and we found the problem. The tower itsefs is DC isolated, but...on the tower are 4 lihgts (2x in 70m and 2x in 135m) powered by 410; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00157.html (11,140 bytes)
2. LF: Test failed... (score: 1): Author: "Gasparik Richard" <[email protected]>; Date: Mon, 19 Jan 2004 13:14:18 +0100; Hi LF-ers... Here is a small story from our expedition. At 1400 local time we were on site. WX was good and we start tuning the antenna. Receiving problems has been solved very quickly and we heard D; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00158.html (9,353 bytes)
3. Re: LF: Test failed... (score: 1): Author: "John Andrews" <[email protected]>; Date: Mon, 19 Jan 2004 10:13:56 -0500; Rich, Two possiblities: 1. As Rik pointed out, it is common practice to provide a DC ground path for MW towers. This would be done with an inductor, and it may not have enough reactance at 136 kHz. 2; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00253.html (9,325 bytes)
4. RE: LF: Test failed... (score: 1): Author: "Rik Strobbe" <[email protected]>; Date: Mon, 19 Jan 2004 17:30:11 +0100; So John (W1TAG) was right with his second guess. However it is interesting that the 135 m tower was used on 1097 kHz (273 m wavelength), so it acted as a lambda/2 monopole. Since such antenna is high; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00341.html (9,812 bytes)
5. Re: LF: Test failed... (score: 1): Author: "Rik Strobbe" <[email protected]>; Date: Mon, 19 Jan 2004 14:57:53 +0100; Hello Rich, According to MMAMA the antenna capacitance should be something like 2.7nF, thus a loadingcoil of +/- 500uH would be needed. I assume that at least one of the variometers covered this rang; /rsgb_lf_group-archives/html/rsgb_lf_group/2004-01/msg00342.html (10,634 bytes)

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