Antonio Vernucci wrote:
----- Original Message ----- From: "K3HVG"
Newsgroups: rec.radio.amateur.boatanchors
Sent: Sunday, January 11, 2009 7:59 PM
Subject: LS-3 speaker


Tony, I looked inside a new one, just out of the original box. NO
speaker connections are connected to ground.

Thanks for your time Jeep.

By the way, my BC-191 works fine now, but I came to the conclusion that
operating with that dynamotor is really unpleasant. So I am in the
process of building an AC supply.

I hope that, with the AC-powered filaments, no hum will show up in the
transmit audio.

73

Tony I0JX


Tony, From various reports, use of the dynamotor may well be better
than a.c. supplies in that the dynamotor MAY provide better regulation
than external supplies. If your a.c. supply is stiff and capable of not
sagging under voice peaks, etc. it will be just fine. Personally, I use
one with a pair of 6336B regulators. That really helps the residual
FMing of the signal. Also, try the "San Luis Obispo" fine tuning
procedure for the frequency you intend to use the most. That will also
quiet things down a bit.

Regards Jeep/K3HVG



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