reggaenaut
Addicted Member
My favorite filter for HD noise is the on-off switch. It's not like there's anything left on radio that I want to listen to.
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My favorite filter for HD noise is the on-off switch. It's not like there's anything left on radio that I want to listen to.
Based on Mr. Beezley's articles, the problem components of the HD signal are more than 100 KHZ off the base frequency so the filter design of your Scott is probably doing the job here. See http://ham-radio.com/k6sti/iboccer.htm
I recently picked up a Scott 312-C and it sounds quiet on my IBOC problem station. Everything I read suggests that the LT-112B is very similar; please email me if you want more details. Also quiet on KBAQ is a Sherwood S3000-V -- ironic as both tuners were designed long before HD radio was conceived. Scott tuners in general from the 1960s seem to handle IBOC well based on owner comments; my 370B tube unit is very quiet.
Marantz 10B, 20, and 20B and Model 18 and 19 receivers fail the HD sideband hash test. They are noise city. Old Sherwoods are quiet.
Thanks for sharing this. How about the 150? It is three generations after the 20B. Brian Beezley's web site
http://ham-radio.com/k6sti/hdrsn.htm
indicates that the 2130 which followed it has a post-detection filter, which should help with HD noise.
Thank you!