tag:blogger.com,1999:blog-9071048343455395511.post7459837745597184626..comments2024-03-24T22:03:31.205+00:00Comments on Roger G3XBM's (Mainly) Amateur Radio Blog: 4m transverterRoger G3XBMhttp://www.blogger.com/profile/13673890140751539870noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-9071048343455395511.post-13648689127061298882011-01-29T20:59:29.892+00:002011-01-29T20:59:29.892+00:00This sounds like a fantastic project. All of the o...This sounds like a fantastic project. All of the other avenues I have considered for becoming active on 4 metres have one or more disadvantages, too expensive, not multimode, not full band coverage, etc. I'm looking forward to the next installment. Are you going to post an initial schematic?<br /><br />SteveAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-66387485517490509572011-01-25T19:36:09.212+00:002011-01-25T19:36:09.212+00:0042MHz crystals are on their way from Tony at Spect...42MHz crystals are on their way from Tony at Spectrum Communications, so the RX converter/LO build can start within days.Roger G3XBMhttps://www.blogger.com/profile/13673890140751539870noreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-63805618746312425622011-01-25T15:16:17.944+00:002011-01-25T15:16:17.944+00:00Hello Roger
I have a SEM four metre coverter and...Hello Roger<br /><br />I have a SEM four metre coverter and a couple<br />of scanners that cover Four Meters.<br />I connected a Texscan tunable bandpass filter (5vf55, 55-110MHZ) a head of an Alinco DJ-X3 and peaked it at 70MHZ and was amazed what I could hear with my outside dipole at 10 feet high.<br />I have a completed spectrum transmit coverter I could get<br />up and running on four,and a Melstock transmitter that<br />that needs to be built up.<br />A transverter would be be a better option,and a simple design would be available parts would be great.<br />Have any design ideas yet such as ultilising a SBl-1 or <br />NE612 mixers?<br /><br />Kind Regards<br /><br />TonyAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-9988251795812576442011-01-25T14:58:01.865+00:002011-01-25T14:58:01.865+00:00One thing on my mind was where to get a 42MHz crys...One thing on my mind was where to get a 42MHz crystal for the conversion from 70-28MHz, but it looks like Spectrum Communications in Dorset sell these for £4. I will order one (or two).Roger G3XBMhttps://www.blogger.com/profile/13673890140751539870noreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-3568950746950302642011-01-25T14:57:14.447+00:002011-01-25T14:57:14.447+00:00This comment has been removed by the author.Roger G3XBMhttps://www.blogger.com/profile/13673890140751539870noreply@blogger.comtag:blogger.com,1999:blog-9071048343455395511.post-22167333207027806322011-01-25T07:58:44.374+00:002011-01-25T07:58:44.374+00:00Oh well done Rodger. I'm not too far away near...Oh well done Rodger. I'm not too far away near Peterborough so look forward to hearing & working you you on 4m. You may be able to access the "Parrot" (MB7FM) a store and forward simplex voice repeater on 70.437.5 MHz. Also, lots of info on 70Mhz.org.<br /><br />73 De G8JGOG8JGOhttps://www.blogger.com/profile/00505492102212197876noreply@blogger.com