20-11-2018, 12:23 PM
I have had the Pi-based WSPR signal up on 6M for a while this morning but have encountered a few issues yet to be solved.
For a start, it runs a number of transmission sequences then shuts down the Tx - I think I have seen a fix for this already.
A more important side effect is that the Pi beacon puts out broadband noise across HF and 6 when on Tx into the 6M J-Pole. When it drops off Tx then the received noise level is back to normal. This could be a major stumbling block to running it 24/7 as I often listen across the HF bands, sometimes operating FT8 along the way. Maybe it will be on when I am home but not actually operating / tuning around, which sort-of defeats the purpose of having it.
While not boxed as yet, the photo below shows the sandwich, Pi on top, RF amp/filter below it.
For a start, it runs a number of transmission sequences then shuts down the Tx - I think I have seen a fix for this already.
A more important side effect is that the Pi beacon puts out broadband noise across HF and 6 when on Tx into the 6M J-Pole. When it drops off Tx then the received noise level is back to normal. This could be a major stumbling block to running it 24/7 as I often listen across the HF bands, sometimes operating FT8 along the way. Maybe it will be on when I am home but not actually operating / tuning around, which sort-of defeats the purpose of having it.
While not boxed as yet, the photo below shows the sandwich, Pi on top, RF amp/filter below it.
Doug VK4ADC @ QG62LG51
http://www.vk4adc.com
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http://www.vk4adc.com
This Forum is only going to be as interesting as the posts it contains.
If you have a comment or question, post it as it may trigger or answer the query in someone else's mind.