[ICOM] RE: Sherwood Engineering and DSP, 706

[Clif Holland]

Probably the HID growing lights over thier pot plants... GRIN

Clif Holland KA5IPF
www.avvid.com




----- Original Message ----- 
From: "Paul Gates, KD3JF" <pearly732003 at yahoo.com>
To: "ICOM Reflector" <icom at mailman.qth.net>
Sent: Thursday, June 07, 2007 1:49 PM
Subject: Re: [ICOM] RE: Sherwood Engineering and DSP, 706


>I have the same set up as you do. I still have some noise but I tell you 
>the noise on 40 is the worse. To further complicate all of this I have a 
>neighbor across the street that is generating a good S-8 noise and my 
>antenna is picking it up.
>
> I had the Utility person come out and he verified where the noise was 
> coming from. We visited the neighbor and they refused to let the gentleman 
> from the Utility company discover exactly where the noise was in their 
> home.
>
> In the house I am running power off the sealed battery for the 706. The 
> only way I can use the receiver is along with digital speaker, DSP is to 
> turn off the preamp and turn on the attenuator.
>
> Now on mobile the DSP works much better like a dream but not in the apt. 
> Any Comments?
>
> Paul KD3JF
>
> Ron Hashiro <rhashiro at hawaiiantel.net> wrote: >
>> From: John Geiger
>> Reply-To: ICOM Reflector
>> To: icom at mailman.qth.net, kenwood at mailman.qth.net,yaesu at mailman.qth.net,
>> cq-contest at contesting.com
>> Subject: [ICOM] Sherwood Engineering and DSP
>> Date: Wed, 6 Jun 2007 18:38:14 -0700 (PDT)
>>
>> Sherwood Engineering just put up their Dayton 2007
>> presentation on DSP and how it isn't everything it is
>> cracked up to be.  See:
>>
>> http://www.sherweng.com/documents/Dayton2007w.pdf
> Rob Sherwood in this writing, confirms what I had suspected. That the new
> IF DSP-based radios are not that good.  I run an IC-706 MK II G, with
> the 1.9 Khz
> SSB filter, plus the ClearSpeech audio DSP, and it's a mobiler's dream.
>
> The 706 performs well in heavy pile-ups on the RX end.  However, if there 
> is
> someone in a mobile within a few hundred feet of me, he'll wipe out my
> receiver, even on other bands.  Especially if he's on 20m, and I'm on 17 
> or
> 15m.  Can't be helped.
>
> I do pick up all kinds of high impulse noise -- especially from sodium 
> lamps
> at the beach-side park at twilight.  Nasty noise on 40m and 20m.  I put
> in the Clearspeech DSP, and it improves the audibility of many of the
> signals.
> It removes perhaps 3 S signals worth of hash.  Makes long term
> listening bearable, compared to without it.
>
> I stopped by the Icom booth at Dayton on Sunday morning, around 9 am,
> and the gentleman behind the counter tried to have me understand that the
> DSP-based 7000 was better than the 706.  I'm sure the 7000 is a fantastic
> radio (had another fellow ham upgrade recently from a 706 to a 7000),
> but that the same time, the fellow with the 7000 noticed that the 706 with
> the SSB filter and DSP was quite a performer.  Maybe Dayton/Icom
> fellow was running his rig in a relatively impulse noise-free 
> environment(?)
>
> The gentleman at Dayton told me of problems with the ClearSpeech unit,
> that he could hear a capacitive pumping in the audio.  We eventually
> agreed that perhaps I had one of those units that works, and that he
> heard a unit that was having production problems.  He told me that
> if I put it on eBay, he's sure it'll be snapped up.  Right, like I'm going
> to give up the baby that makes my 706 and 817 sing!
>
> BTW, I picked up the ClearSpeech in Dayton I think it was 2003.
> It was at the booth location where Tokyo Hi-Power was this year.
> I picked up the SSB filter in 2004, and haven't looked back!
> Hard crystal filters in the 706 (CW and SSB), plus a darn good
> audio DSP (not like the Timewave rubbish), and that rig is unstoppable.
> Kicks butt compared to the TS-50, FT-817 and FT-857.
>
> Not sure how the new West Mountain Radio version will perform.
>
> Dick, keep up the fine reflector!
>
> Ron Hashiro, AH6RH
> Honolulu, HI
> http://ronhashiro.htohananet.com/am-radio/in-hawaii.html
>
>
>
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