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Old 19th May 2017, 8:14 pm   #2
Al (astral highway)
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Join Date: Nov 2006
Location: London, UK.
Posts: 3,496
Default Re: My pantry transmitter.

Quote:
Originally Posted by Andrew2 View Post
Only trouble is it suffers terribly from modulation hum. I get this blasted buzz on any strong MW station, and my own transmissions are not immune. I can get rid of it by rotating the radio, but it really is a pain!
Hi Andrew,

I'm just building an AM internet here so I'm interested to see your version and results tailored to the top of the waveband. It sounds like a pleasing little build and with good results, must be gratifying to have done this.

I wonder if you could break up the text of your OP with the Mods' permission - it does take a bit of effort to read through all that in one block, not that you're doing anything wrong, just that it does look more offputting and I wonder that you might get more responses?

Also a photo of the actual build is always pleasing to see!

What do you think is behind the modulation hum? It doesn't seem fair that mine doesn't suffer from it when your super-careful design does!

How did you design the loop antenna and matching?
(not that I'm the expert, I'm just curious.)
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