22-05-2014, 05:35 PM
One of those came up for grabs not far from me a couple of years ago but it was a bit damaged and various chunks were missing so I declined, the one in Gary's link looks to be in good condition so far as I can see, they do come up on Ebay but not very often.
It has a single balanced demodulator for CW but that should also work for SSB reception quite well, any AM can be nulled out, a while back I found an explanation for that demodulator in PDF format, I posted it on the forum when I found it, here it is:
http://golbornevintageradio.co.uk/forum/showthread.php?tid=3321&highlight=balanced+demodulator
I built a single balanced demodulator using an EB91 in a direct conversion receiver I knocked up many years ago with a home brew trifler wound coil, worked quite well as I remember, it nulled out most of any AM breakthrough quite effectively.
Lawrence.
It has a single balanced demodulator for CW but that should also work for SSB reception quite well, any AM can be nulled out, a while back I found an explanation for that demodulator in PDF format, I posted it on the forum when I found it, here it is:
http://golbornevintageradio.co.uk/forum/showthread.php?tid=3321&highlight=balanced+demodulator
I built a single balanced demodulator using an EB91 in a direct conversion receiver I knocked up many years ago with a home brew trifler wound coil, worked quite well as I remember, it nulled out most of any AM breakthrough quite effectively.
Lawrence.
