- The Ports Down-Under
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Hi Folks
Here it is the "Ports Down-Under" It's a hybrid using all the good stuff from all our nice friends (a truly internationally inspired project)
Battery powered, big screen (thanks to Bevan VK5BD), 434mhz first LO, U2790B modulator, Minikits upconverter, 841mhz second LO
Nice 23cm combline filter and MiniKits dual stage amp
The prototype was a 200mW version which achieved a solid contact to our local repeater 55Km away (with 18db dish)
The knock off pelican case has a cheap Lincho ebay 1.2ghz panel (trimmed down)that Velcros to it thereby making it fully contained
Rather than use the HDMI cable for the camera a very cheap ribbon is used
The 10000mAhr batteries last quite a while at low power
Two cheap 433mhz and a 23cm Saw filters are used plus the minikits 23cm filter and the combline the output is as clean as a whistle
(We might have gone a bit overboard with the filters)
Ken to answer your question, Dave has incorporated Bevan's code into the latest release which we tested (thanks Dave) so it works with both
Just need the flat ribbon and the extra lines to make the touch work (Bevan figured that out while I made Coffee)
The idea of the project was to make construction a little cheaper than Portsdown and the 1st LO/modulator stage is using mainly old school components
We are 23cm on DVB-S in VK, so a 70cm version would be even more simple, cheaper and easier to construct
I guess we will perfect it in the coming weeks, I'd like to achieve a Watt or two while still remaining on batteries
Cheers Roger VK5YYY
