[Icom] Icom 756 Pro II Speaker Options

Fri, 09 Aug 2002 22:14:12 -0500

If the system is an "amplified" speaker system, like many are now days, you 
may never get the RF out of them. Shielding is almost none existent, and 
the amp circuits are prone to RF pick up, best to shut the system off when 
you are on the air.

At 10:11 PM 8/9/02 -0400, you wrote:
>Matt, thanks for the info. How about computer speakers and RFI getting in to
>them. Should I used the same principle, One at the speaker and one at the
>audio source? Thanks, Steve
>
>----- Original Message -----
>From: "Matt Erickson" <[email protected]>
>To: <[email protected]>
>Sent: Friday, August 09, 2002 8:47 PM
>Subject: Re: [Icom] Icom 756 Pro II Speaker Options
>
>
> > Size and brand/mix of the ferrite is not important, placement is, place a
> > core on the line at the rig, and the speaker. That is all there is to it.
> > At least two turns on each core, more if the RF feed-back is still in the
> > speaker.
> >
> > At 10:25 PM 8/8/02 -0400, you wrote:
> > >What brand and size of core do you use and where do you place it. Close
>to
> > >speaker or closer to source end of output audio? Thank you...
> > >
> > >----- Original Message -----
> > >From: "Matt Erickson" <[email protected]>
> > >To: <[email protected]>
> > >Sent: Thursday, August 08, 2002 9:03 PM
> > >Subject: Re: [Icom] Icom 756 Pro II Speaker Options
> > >
> > >
> > > > Wrap the cable a couple turns around a ferrite core, and I have no RF
> > > > feed-back at all on any band at legal-limit.
> > > >
> > > > 73 de Matt KK5DR
> > > >
> > > > At 07:55 PM 8/8/02 -0400, you wrote:
> > > > >How about RF, these speakers are usually not shielded very well??
> > > > >
> > > > >----- Original Message -----
> > > > >From: "Matt Erickson" <[email protected]>
> > > > >To: <[email protected]>
> > > > >Sent: Wednesday, August 07, 2002 10:04 PM
> > > > >Subject: Re: [Icom] Icom 756 Pro II Speaker Options
> > > > >
> > > > >
> > > > > > Radio Shack "Optimus" series book-shelf HiFi speakers are hard to
> > >beat,
> > > > >but
> > > > > > they don't have an ICOM logo on them, but who cares about that
>stuff
> > > > >anyway.
> > > > > > These speakers are all I use, never did care for the over-priced,
> > >crappy
> > > > > > sounding, "matching" speakers.
> > > > > >
> > > > > > At 06:01 PM 8/7/02 -0700, you wrote:
> > > > > > >I have decided to add an outboard speaker to my 756PROII.  Of
>course,
> > > > >ICOM
> > > > > > >offers the SP-20 ($249 list) and the SP-21 ($119) list.  Hard to
> > >believe
> > > > >the
> > > > > > >small amount of audio filtering the SP-20 provides is useful
>given
> > >the
> > > > >notch
> > > > > > >feature on the PROII but was wondering what others think?
> > > > > > >
> > > > > > >Or, what other products besides the ICOM speakers should I
>consider?
> > > > >Other
> > > > > > >thoughts also appreciated.
> > > > > > >
> > > > > > >
> > > > > > >73 de Jim [email protected]
> > > > > > >
> > > > > > >----
> > > > > > >Your Moderator: Dick Flanagan W6OLD, [email protected]
> > > > > > >Icom FAQ: http://www.qsl.net/icom/
> > > > > >
> > > > > > ----
> > > > > > Your Moderator: Dick Flanagan W6OLD, [email protected]
> > > > > > Icom FAQ: http://www.qsl.net/icom/
> > > > > >
> > > > >
> > > > >----
> > > > >Your Moderator: Dick Flanagan W6OLD, [email protected]
> > > > >Icom FAQ: http://www.qsl.net/icom/
> > > >
> > > > ----
> > > > Your Moderator: Dick Flanagan W6OLD, [email protected]
> > > > Icom FAQ: http://www.qsl.net/icom/
> > > >
> > >
> > >----
> > >Your Moderator: Dick Flanagan W6OLD, [email protected]
> > >Icom FAQ: http://www.qsl.net/icom/
> >
> > ----
> > Your Moderator: Dick Flanagan W6OLD, [email protected]
> > Icom FAQ: http://www.qsl.net/icom/
> >
>
>----
>Your Moderator: Dick Flanagan W6OLD, [email protected]
>Icom FAQ: http://www.qsl.net/icom/