tag:blogger.com,1999:blog-3322535002789091724.post4291385844603700450..comments2023-10-10T10:54:32.294+01:00Comments on G0MGX In the Shack: Return Loss Bridge - Where does it lead?G0MGXhttp://www.blogger.com/profile/02099618962895092351noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3322535002789091724.post-87033023115072610062016-06-08T13:24:05.740+01:002016-06-08T13:24:05.740+01:00Hi!
I know it's 3 years late, but here you go....Hi!<br />I know it's 3 years late, but here you go.<br />I built mine using a Fair-Rite FT37-43, parallel 100R 1% resistors, with a "Manhattan" pad for the R1/R2 midpoint, the rest being point to point wired.<br />I built a small enclosure using copper clads and kept the wiring as short as possible inside, a bit like so:<br />http://www.k8iqy.com/testequipment/returnlossbridge/returnlossbridge.htm<br /><br />If I measured everything correctly, mine has a directivity of about 32dB for a 7MHz signal.zimmermannhttps://www.blogger.com/profile/04477181545002534879noreply@blogger.comtag:blogger.com,1999:blog-3322535002789091724.post-34633468652044621522013-09-04T19:57:11.875+01:002013-09-04T19:57:11.875+01:00Hi Dom
Thanks for the suggestion; what toroid and...Hi Dom<br /><br />Thanks for the suggestion; what toroid and what directivity do you get from yours?<br /><br />Mark.G0MGXhttps://www.blogger.com/profile/02099618962895092351noreply@blogger.comtag:blogger.com,1999:blog-3322535002789091724.post-42426325681384146892013-09-04T17:28:05.577+01:002013-09-04T17:28:05.577+01:00wires too long inside the box? Mine is point to po...wires too long inside the box? Mine is point to point.<br /><br />Replace the input wire from the coax centre connector with a short piece of shielded cable RG58/174/316 etc.. right up to the -43 ferrite.<br /><br />72<br /><br />DomM1KTAhttps://www.blogger.com/profile/05944098903387301523noreply@blogger.com