tag:blogger.com,1999:blog-35901825.post2211100055901293253..comments2024-03-19T06:03:40.451+10:00Comments on marxy's musing on technology: 1000Km contact on home brew 80m DSB rigPeter Markshttp://www.blogger.com/profile/13007012724570360389noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-35901825.post-88625875520064218872023-02-13T13:53:24.912+10:002023-02-13T13:53:24.912+10:00I have the simple build homebrew bug here are a co...I have the simple build homebrew bug here are a couple of my CW attempts at the totally homebrew.<br /><br />400mW QSO<br />https://youtu.be/u35mrvdEpIo<br /><br />3.5 Watt mod<br />https://youtu.be/lKgeB-b_tM4Anonymoushttps://www.blogger.com/profile/11571848550502172530noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-25907310543016590532009-01-31T12:09:00.000+10:002009-01-31T12:09:00.000+10:00Thanks Peter, I have a simple DC receiver under co...Thanks Peter, I have a simple DC receiver under construction, I'll crystal lock it to the same frequency and see how we go.Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-12175749992531637482009-01-31T09:03:00.000+10:002009-01-31T09:03:00.000+10:00Peter, A DC receiver can receive DSB but I found i...Peter, A DC receiver can receive DSB but I found it helps if it's very stable (more so than for SSB reception).Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35901825.post-43916953544184129232009-01-27T16:30:00.000+10:002009-01-27T16:30:00.000+10:00I'm so glad to hear it worked well for you Peter. ...I'm so glad to hear it worked well for you Peter. Nothing quite like having a QSO with a piece of homebrew gear.<BR/><BR/>I like your idea of using the same basic RF amp scheme with switched filters to cover the lower part of HF. Drew has a design that uses some gain-levelling feedback to cover all of HF with IRF510s or similar MOSFETs, not just to 20 metres. I've seen one bloke using them on Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-35901825.post-73804943530160513472009-01-27T15:46:00.000+10:002009-01-27T15:46:00.000+10:00It was 10pm summer time, despite some electrical s...It was 10pm summer time, despite some electrical storm noise the contact was solid.<BR/><BR/>Amazing communicating over such distance with a box of bits on the bench.<BR/><BR/>I guess SSB is twice as effective but DSB is so simple I like it.Peter Markshttps://www.blogger.com/profile/13007012724570360389noreply@blogger.comtag:blogger.com,1999:blog-35901825.post-47737681640781827262009-01-27T15:42:00.000+10:002009-01-27T15:42:00.000+10:00Nice one, I think I need to get onto 80m asap.Chee...Nice one, I think I need to get onto 80m asap.<BR/><BR/>Cheers<BR/>Kevin zkbAnonymousnoreply@blogger.com