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Total 3 documents matching your query.

1. Topband: DX Engineering 4-Square RX Antenna: Element Amplifiers? (score: 1): Author: "Jeff Maass K8ND" <jmaass@k8nd.com>; Date: Tue, 22 Sep 2015 21:15:17 -0400; In January, Jim W8WTS and I were at PJ2T for CQWW 160 CW, and we both noted that our DX Engineering 4-square RX antenna did not appear to perform as well as usual. It is a 98-foot configuration using; /archives//html/Topband/2015-09/msg00100.html (8,777 bytes)
2. Re: Topband: DX Engineering 4-Square RX Antenna: Element Amplifiers? (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Tue, 22 Sep 2015 20:12:31 -0700; 1. It appears that the s21 testing was done using the 50 ohm source impedance of the VNA. This test doesn't really put the amplifier through its paces. Instead, put a small capacitor in series with t; /archives//html/Topband/2015-09/msg00101.html (8,834 bytes)
3. Re: Topband: DX Engineering 4-Square RX Antenna: Element Amplifiers? (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Tue, 22 Sep 2015 23:37:12 -0400; ~ .5 dB might make as much as a change from 25 dB F/B to 20 dB. I wouldn't expect it to be noticeable. -- Original Message -- From: "Jeff Maass K8ND" <jmaass@k8nd.com> To: "Topband Mailing List" <top; /archives//html/Topband/2015-09/msg00102.html (10,768 bytes)

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