- 1. Topband: MFJ259B QUERY (score: 1)
- Author: "Mr. and Mrs. Magoo" <magoo@isp.ca>
- Date: Sat, 29 May 2010 23:17:38 -0400
- I'm cutting a couple of 1/4 wave sections on topband and, in tuning for X=0, I notice that this value exists over about 30+ khz. If I "fine tune" for R=1 and X=0 there is still a healthy bandwidth of
- /archives//html/Topband/2010-05/msg00065.html (6,465 bytes)
- 2. Re: Topband: MFJ259B QUERY (score: 1)
- Author: Dan Zimmerman N3OX <n3ox@n3ox.net>
- Date: Sun, 30 May 2010 11:59:31 -0400
- That seems about right, for example, for RG-213 terminated in an open circuit. You can use VK1OD's transmission line calculator to investigate the predicted impedance of an open circuit stub. Select
- /archives//html/Topband/2010-05/msg00066.html (7,854 bytes)
- 3. Re: Topband: MFJ259B QUERY (score: 1)
- Author: Guy Olinger K2AV <olinger@bellsouth.net>
- Date: Sun, 30 May 2010 15:06:44 -0400
- The MFJ can be a blunt instrument on certain tasks. I'm not sure that the 259 is a good instrument for measuring zero Z crossings. What I used to do before I got better stuff, was to sweep the freque
- /archives//html/Topband/2010-05/msg00067.html (8,090 bytes)
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