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Total 3 documents matching your query.

1. Topband: Using a 40673 in a KD9SV 160m pre-amp? (score: 1): Author: sire@iinet.net.au (Steve Ireland); Date: Sat, 20 Oct 2001 13:13:17 +0800; G'day, A friend of mine Phil VK6APH has recently built the famous KD9SV variable gain 160m preamp, as published in Ham Radio October 1989. As it was difficult to obtain an NEC 3SK88 that Gary used in; /archives//html/Topband/2001-10/msg00169.html (7,616 bytes)
2. Topband: Using a 40673 in a KD9SV 160m pre-amp? (score: 1): Author: zl3ix@inet.net.nz (Greg - ZL3IX); Date: Sun, 21 Oct 2001 08:26:07 +1300; My solution to this, Steve, is to insert a high pass filter between the antenna and the preamp. The one I use has at least 40 dB rejection from 1.6 MHz downwards. Then not only is the preamp protect; /archives//html/Topband/2001-10/msg00176.html (7,607 bytes)
3. Topband: Using a 40673 in a KD9SV 160m pre-amp? (score: 1): Author: donhall@myriad.net (Don Hall); Date: Sat, 20 Oct 2001 19:04:26 -0500; I concur with Greg's recommendation. My location is about 2 km from a 10 LW BC station on 1620 kHz. Without the LPF I have serious intermod with my PP 2N5109 preamp. Good luck. 73 Don K5AQ; /archives//html/Topband/2001-10/msg00177.html (6,878 bytes)

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