[Hallicrafters] SX-100

[Charlie]

Well, it may sound like it has a product detector, but it doesn't.
Hallicrafters found early on that if you increase the BFO injection level, a
diode detector will function adequately for SSB demodulation.

Remember the old trick of turning down the RF gain on a pre-sideband era
radio when listening to Donald Duck?  This is essentially what you are doing
when you crank the audio all the way up and use the RF gain control to set a
comfortable listening level.  By lowering the IF signal into the diode
detector, you are effectively raising the BFO injection resulting in decent
SSB detection.

That's exactly what the SX-100 and I believe, early SX-101 radios did.
Diode detectors only and SSB that didn't sound too bad at all.

73' Charlie k3ICH

----- Original Message ----- 
From: "DAN COTSIRILOS" <dcsfree at worldnet.att.net>
To: "Hallicrafters list" <hallicrafters at mailman.qth.net>
Sent: Wednesday, 01 December 2004 7:28 PM
Subject: [Hallicrafters] SX-100


Do I remember reading people telling me that a SX-100 does not have a
product detector? I just picked up one and it sure sounds like it has one to
me? It receives SBB perfectly with full RF gain. My limited understanding
tells me that a radio that can pick up SSB with full gain has a product
detector, no?  Dan