[CQ-Contest] hiss

Dale Putnam daleputnam at hotmail.com
Fri Jul 28 08:16:12 EDT 2006


yes, they are, well at least in my parts cabinet.--...   ...--Dale - WC7S in Wy



> From: jackbrindle at earthlink.net> Date: Thu, 27 Jul 2006 21:39:19 -0700> To: k3lr at k3lr.com> CC: k8bb at comcast.net; cq-contest at contesting.com> Subject: Re: [CQ-Contest] hiss> > As another one who swears by his crud-o-ject, I have one question.  > Are the 88mH telephone inductors still available anywhere?> Don't need any, just curious...> > On Jul 27, 2006, at 7:35 PM, Tim Duffy K3LR wrote:> > > Hi Don!> >> > My favorite outboard filter to reduce high end QRM and hiss is the  > > SCAF-1 by> > Idiom press. Bob, W9KNI knows CW and his filter is super. I have to  > > confess that> > I really like my home built Crud-O-Ject, but the SCAF-1 does a much  > > better job.> >> > Check out:> > http://www.idiompress.com/scaf-1.html> >> > 73!> > Tim K3LR> >> > k8bb at comcast.net wrote:> >> >> I notice that most amateur transceivers, even most (all?) high-end  > >> units,> >> have quite "hissy" audio amplification. I find this particularly  > >> irritating> >> but I have ignored it or otherwise dealt with it until it doesn't  > >> bother me> >> anymore. However, I have *excellent* hearing and I would like to  > >> keep it> >> that way - pumping high-freqency, white-noise hiss (even very low  > >> level)> >> through my headset until I become desensitized to it is not  > >> looking out for> >> a healthy future. :-)> >>> >> Anybody use an audio filter to get rid of your rig's audio  > >> amplifier noise?> >> I have a Heathkit HD-1418 audio filter on one of my radios which  > >> is a most> >> excellent variable audio filter, but the audio amplifier in it is  > >> not much> >> cleaner than my rig. I have also seen the SCAF-1 by Idiom Press  > >> that is> >> intended to help low-level filter blow-by (etc.) but supposedly  > >> also helps> >> fix "white noise" hiss and stuff. Anybody use one? Does it work  > >> for this> >> purpose?> >>> >> Can anybody offer an alternative solution for somebody who still has> >> very-wide-frequency hearing? I am not really looking for a "ham  > >> radio audio> >> filter" as much as I am looking to improve the poor-quality audio  > >> coming> >> from the audio amplification stage of my receivers.> >>> >> Thanks!> >> Don Chisholm K8BB> >> Pontiac, MI> >>> >> _______________________________________________> >> CQ-Contest mailing list> >> CQ-Contest at contesting.com> >> http://lists.contesting.com/mailman/listinfo/cq-contest> >> >> > _______________________________________________> > CQ-Contest mailing list> > CQ-Contest at contesting.com> > http://lists.contesting.com/mailman/listinfo/cq-contest> > > -Jack Brindle, W6FB> =======================================================================> > > _______________________________________________> CQ-Contest mailing list> CQ-Contest at contesting.com> http://lists.contesting.com/mailman/listinfo/cq-contest
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