Well,
The final parts have fallen into place today. Firstly I have adjusted the HB100 from the ARRL $25 10GHz signal generator I mentioned last time to be as close to 10.368 GHz as possible using the LNB range extender for the Spectrum Analyser (also from last time).
The metal case contains a grub like screw underneath a QC sticker. Here you can see the device with the QC sticker removed. As luck would have it the trimmer for the coils in the transverters fits perfectly - you just turn the screw to adjust the frequency:
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The other thing I have done is construct an interface box for the FT-817 to:
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Please note that the 'DC up the coax' bits are entirely stolen from here: http://www.g3pho.org.uk/
The actual device looks like this:
![]()
and it interfaces to the FT-817 through the two rear sockets for ACC and PKT.
So all in all I think I now have a CW, SSB and digital mode capability on 10 GHz.
![]()
Local conditions.
The final parts have fallen into place today. Firstly I have adjusted the HB100 from the ARRL $25 10GHz signal generator I mentioned last time to be as close to 10.368 GHz as possible using the LNB range extender for the Spectrum Analyser (also from last time).
The metal case contains a grub like screw underneath a QC sticker. Here you can see the device with the QC sticker removed. As luck would have it the trimmer for the coils in the transverters fits perfectly - you just turn the screw to adjust the frequency:
The other thing I have done is construct an interface box for the FT-817 to:
- Putting the 3cm transverter into TX by sending DC up the IF coax;
- Providing a AFSK digital mode interface from my laptop;
- Giving a CW keyboard capability.
Here's the schematic:
Please note that the 'DC up the coax' bits are entirely stolen from here: http://www.g3pho.org.uk/
The actual device looks like this:
and it interfaces to the FT-817 through the two rear sockets for ACC and PKT.
So all in all I think I now have a CW, SSB and digital mode capability on 10 GHz.
Local conditions.